Patent
US 9,887,637HIGH SPEED PROGRAMMABLE THRESHOLD GALLIUM NITRIDE POWER LIMITER
Manish N. Shah, Sudhir Gouni, Amitava Das
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,887,637Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an example conventional limiter circuit. [0010]
FIG. 2 illustrates a power-in vs. power-out transfer function for an example conventional limiter circuit such as is illustrated in
FIG. 3 illustrates an example programmable limiter circuit, according to an example. [0012]
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
FIG. 5 illustrates a switching element configuration for a command that equals zero, according to an example. [0014]
FIG. 6 illustrates a switching element configuration for a command that equals one, according to an example. [0015]
FIG. 7 illustrates a switching element configuration for a command that equals two, according to an example. [0016]
FIG. 8 illustrates a switching element configuration for a command that equals three, according to an example. [0017]
FIG. 9 depicts a power-out versus power-in graph of the example programmable limiter circuit of
FIG. 10 illustrates a Radio Frequency (RF) switch block with integrated GaN-based limiter circuit, according to an example. [0019]
FIG. 11 illustrates a programmable limiter control process, according to an example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein the plurality of switching elements includes at least one intermediate switching element connected in series between the first switching element, the second switching element, and with one another. Currently amended
. Canceled
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal and its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path including each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller electrically coupled to each respective insulated gate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and provide a single voltage as the respective off voltage to all switching elements, the single voltage being negative with regards to the reference potential, wherein the adjustable threshold power limiter circuit further comprises a voltage inverter circuit generating the single voltage. Currently amended
The adjustable threshold power limiter circuit of claim 4, wherein the voltage inverter circuit includes a charge pump. Currently amended
The adjustable threshold power limiter circuit of claim 4, further comprising a single integrated circuit comprising the controller and voltage inverter circuit. Original
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein each switching element in the plurality of switching elements includes a GaN HEMT. Currently amended
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path comprising each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller including a threshold command input coupled to a data interface, the controller electrically coupled to each respective insulated g ate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and prov ide one of the respective off voltage [[or]] an d the respective on voltage to each switching element based on a value of data received on the data interface. Currently amended
The adjustable threshold power limiter circuit of claim 10, the threshold command input receiving digital data indicating a threshold value, an d wherein the controller further includes a digital decoder with output lines including one respective output line for each switching element in the plurality of switching elements, the digital decoder provides the respective on voltage to a first set of output lines comprising a number of output lines corresponding to a value in the digital data, and the digital decoder provides the respective off voltage to output lines other than the first set of output lines. Currently amended
The adjustable threshold power limiter circuit of claim 10, wherein each switching element in the plurality of switching elements includes a GaN HEMT. New
Canceled
The method of claim [[13]] 15, wherein a single voltage is applied as the off voltage to all gates of each transistor in the first set of transistors. Currently amended
[[The]] A method, comprising: receiving a threshold command; determining, based on the threshold command, a first set of transistors within a plurality of transistors, the first set of transistors being selected to be biased in an off condition, and the plurality of transistors being connected in series with one another to form a shunt between a signal line and a reference potential; applyin g an off voltage to g ates of each transistor in the first set of transistors; and applyin g an on voltage to g ates of each transistor in the plurality of transistors that are not in the first set, wherein t he plurality of transistors includes GaN HEMT devices with insulated gate terminals, and wherein the off voltage is generated by a negative voltage inverting circuit. Currently amended
The method of claim [[13]] 15, further comprising: receiving an off voltage command indicating a voltage value; and configuring, based on the off voltage command, a voltage generator to provide the voltage value as the off voltage to apply to gates of each transistor in the first set of transistors. Currently amended
The method of claim 16, wherein the off voltage is a negative voltage, wherein the voltage generator includes a charge pump with a selectable number of stages, and wherein the configuring includes configuring the charge pump to use the selectable number of stages. Currently amended
A combination signal switch and adjustable threshold power limiter circuit, comprising: a first plurality of switching elements and a second plurality of switching elements, each of the first plurality of switching elements and the second plurality of switching element comprising at least a respective first switching element and a respective second switching element, each respective switching element in the first plurality of switching elements and the second plurality of switching elements comprising: a respective first terminal, a respective second terminal, and a respective insulated gate terminal, and operable to form, based on a voltage between its insulated gate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a first series switching element coupling a signal input to a first signal output; a first conductive path between the first signal output and a reference potential, the first conductive path comprising each switching element in the first plurality of switching elements connected in a series arrangement; a second series switching element coupling the signal input to a second signal output; a second conductive path between the second signal output and a reference potential, the second conductive path comprising each switching element in the second plurality of switching elements connected in a series arrangement; and a controller electrically coupled to a gate of the first series switching element, a gate of the second series switching element, and each respective insulated gate terminal of each switching element in the first plurality of switching elements and the second plurality of switching elements, the controller configured to selectably provide a respective control voltage to each respective insulated gate terminal, each respective control voltage provided to each respective insulated gate terminal being selectable independently of one another between either one of a respective on voltage and a respective off voltage. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller providing a single voltage as the respective off voltage to all switching elements. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller comprising: a threshold command input coupled to a data interface, where the controller provides one of the respective off voltage or the respective on voltage to each respective insulated gate terminal of at least one of the first plurality of switching elements or the second plurality of switching elements based on a value of data received on the data interface. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, wherein each switching element in the first plurality of switching elements includes a GaN HEMT and each switching element in the second plurality of switching elements includes a GaN HEMT. New
Layer stacks claimed or described, ordered top of device to substrate.
adjustable threshold power limiter circuit
combination signal switch and adjustable threshold power limiter circuit
Materials described outside the worked examples.
GaN HEMT
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Response Recovery Time | < 0.1 ns ns | GaN HEMT |
Related documents with shared materials, methods, properties, or citations.
INTEGRATED GALLIUM NITRIDE POWER DEVICE WITH PROTECTION CIRCUITS
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
Patent
Atlas literature
Patent
US 9,887,637Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an example conventional limiter circuit. [0010]
FIG. 2 illustrates a power-in vs. power-out transfer function for an example conventional limiter circuit such as is illustrated in
FIG. 3 illustrates an example programmable limiter circuit, according to an example. [0012]
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
FIG. 5 illustrates a switching element configuration for a command that equals zero, according to an example. [0014]
FIG. 6 illustrates a switching element configuration for a command that equals one, according to an example. [0015]
FIG. 7 illustrates a switching element configuration for a command that equals two, according to an example. [0016]
FIG. 8 illustrates a switching element configuration for a command that equals three, according to an example. [0017]
FIG. 9 depicts a power-out versus power-in graph of the example programmable limiter circuit of
FIG. 10 illustrates a Radio Frequency (RF) switch block with integrated GaN-based limiter circuit, according to an example. [0019]
FIG. 11 illustrates a programmable limiter control process, according to an example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein the plurality of switching elements includes at least one intermediate switching element connected in series between the first switching element, the second switching element, and with one another. Currently amended
. Canceled
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal and its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path including each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller electrically coupled to each respective insulated gate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and provide a single voltage as the respective off voltage to all switching elements, the single voltage being negative with regards to the reference potential, wherein the adjustable threshold power limiter circuit further comprises a voltage inverter circuit generating the single voltage. Currently amended
The adjustable threshold power limiter circuit of claim 4, wherein the voltage inverter circuit includes a charge pump. Currently amended
The adjustable threshold power limiter circuit of claim 4, further comprising a single integrated circuit comprising the controller and voltage inverter circuit. Original
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein each switching element in the plurality of switching elements includes a GaN HEMT. Currently amended
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path comprising each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller including a threshold command input coupled to a data interface, the controller electrically coupled to each respective insulated g ate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and prov ide one of the respective off voltage [[or]] an d the respective on voltage to each switching element based on a value of data received on the data interface. Currently amended
The adjustable threshold power limiter circuit of claim 10, the threshold command input receiving digital data indicating a threshold value, an d wherein the controller further includes a digital decoder with output lines including one respective output line for each switching element in the plurality of switching elements, the digital decoder provides the respective on voltage to a first set of output lines comprising a number of output lines corresponding to a value in the digital data, and the digital decoder provides the respective off voltage to output lines other than the first set of output lines. Currently amended
The adjustable threshold power limiter circuit of claim 10, wherein each switching element in the plurality of switching elements includes a GaN HEMT. New
Canceled
The method of claim [[13]] 15, wherein a single voltage is applied as the off voltage to all gates of each transistor in the first set of transistors. Currently amended
[[The]] A method, comprising: receiving a threshold command; determining, based on the threshold command, a first set of transistors within a plurality of transistors, the first set of transistors being selected to be biased in an off condition, and the plurality of transistors being connected in series with one another to form a shunt between a signal line and a reference potential; applyin g an off voltage to g ates of each transistor in the first set of transistors; and applyin g an on voltage to g ates of each transistor in the plurality of transistors that are not in the first set, wherein t he plurality of transistors includes GaN HEMT devices with insulated gate terminals, and wherein the off voltage is generated by a negative voltage inverting circuit. Currently amended
The method of claim [[13]] 15, further comprising: receiving an off voltage command indicating a voltage value; and configuring, based on the off voltage command, a voltage generator to provide the voltage value as the off voltage to apply to gates of each transistor in the first set of transistors. Currently amended
The method of claim 16, wherein the off voltage is a negative voltage, wherein the voltage generator includes a charge pump with a selectable number of stages, and wherein the configuring includes configuring the charge pump to use the selectable number of stages. Currently amended
A combination signal switch and adjustable threshold power limiter circuit, comprising: a first plurality of switching elements and a second plurality of switching elements, each of the first plurality of switching elements and the second plurality of switching element comprising at least a respective first switching element and a respective second switching element, each respective switching element in the first plurality of switching elements and the second plurality of switching elements comprising: a respective first terminal, a respective second terminal, and a respective insulated gate terminal, and operable to form, based on a voltage between its insulated gate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a first series switching element coupling a signal input to a first signal output; a first conductive path between the first signal output and a reference potential, the first conductive path comprising each switching element in the first plurality of switching elements connected in a series arrangement; a second series switching element coupling the signal input to a second signal output; a second conductive path between the second signal output and a reference potential, the second conductive path comprising each switching element in the second plurality of switching elements connected in a series arrangement; and a controller electrically coupled to a gate of the first series switching element, a gate of the second series switching element, and each respective insulated gate terminal of each switching element in the first plurality of switching elements and the second plurality of switching elements, the controller configured to selectably provide a respective control voltage to each respective insulated gate terminal, each respective control voltage provided to each respective insulated gate terminal being selectable independently of one another between either one of a respective on voltage and a respective off voltage. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller providing a single voltage as the respective off voltage to all switching elements. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller comprising: a threshold command input coupled to a data interface, where the controller provides one of the respective off voltage or the respective on voltage to each respective insulated gate terminal of at least one of the first plurality of switching elements or the second plurality of switching elements based on a value of data received on the data interface. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, wherein each switching element in the first plurality of switching elements includes a GaN HEMT and each switching element in the second plurality of switching elements includes a GaN HEMT. New
Layer stacks claimed or described, ordered top of device to substrate.
adjustable threshold power limiter circuit
combination signal switch and adjustable threshold power limiter circuit
Materials described outside the worked examples.
GaN HEMT
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Response Recovery Time | < 0.1 ns ns | GaN HEMT |
Related documents with shared materials, methods, properties, or citations.
INTEGRATED GALLIUM NITRIDE POWER DEVICE WITH PROTECTION CIRCUITS
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
Patent
Atlas literature
Patent
US 9,887,637Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an example conventional limiter circuit. [0010]
FIG. 2 illustrates a power-in vs. power-out transfer function for an example conventional limiter circuit such as is illustrated in
FIG. 3 illustrates an example programmable limiter circuit, according to an example. [0012]
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
FIG. 5 illustrates a switching element configuration for a command that equals zero, according to an example. [0014]
FIG. 6 illustrates a switching element configuration for a command that equals one, according to an example. [0015]
FIG. 7 illustrates a switching element configuration for a command that equals two, according to an example. [0016]
FIG. 8 illustrates a switching element configuration for a command that equals three, according to an example. [0017]
FIG. 9 depicts a power-out versus power-in graph of the example programmable limiter circuit of
FIG. 10 illustrates a Radio Frequency (RF) switch block with integrated GaN-based limiter circuit, according to an example. [0019]
FIG. 11 illustrates a programmable limiter control process, according to an example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein the plurality of switching elements includes at least one intermediate switching element connected in series between the first switching element, the second switching element, and with one another. Currently amended
. Canceled
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal and its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path including each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller electrically coupled to each respective insulated gate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and provide a single voltage as the respective off voltage to all switching elements, the single voltage being negative with regards to the reference potential, wherein the adjustable threshold power limiter circuit further comprises a voltage inverter circuit generating the single voltage. Currently amended
The adjustable threshold power limiter circuit of claim 4, wherein the voltage inverter circuit includes a charge pump. Currently amended
The adjustable threshold power limiter circuit of claim 4, further comprising a single integrated circuit comprising the controller and voltage inverter circuit. Original
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein each switching element in the plurality of switching elements includes a GaN HEMT. Currently amended
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path comprising each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller including a threshold command input coupled to a data interface, the controller electrically coupled to each respective insulated g ate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and prov ide one of the respective off voltage [[or]] an d the respective on voltage to each switching element based on a value of data received on the data interface. Currently amended
The adjustable threshold power limiter circuit of claim 10, the threshold command input receiving digital data indicating a threshold value, an d wherein the controller further includes a digital decoder with output lines including one respective output line for each switching element in the plurality of switching elements, the digital decoder provides the respective on voltage to a first set of output lines comprising a number of output lines corresponding to a value in the digital data, and the digital decoder provides the respective off voltage to output lines other than the first set of output lines. Currently amended
The adjustable threshold power limiter circuit of claim 10, wherein each switching element in the plurality of switching elements includes a GaN HEMT. New
Canceled
The method of claim [[13]] 15, wherein a single voltage is applied as the off voltage to all gates of each transistor in the first set of transistors. Currently amended
[[The]] A method, comprising: receiving a threshold command; determining, based on the threshold command, a first set of transistors within a plurality of transistors, the first set of transistors being selected to be biased in an off condition, and the plurality of transistors being connected in series with one another to form a shunt between a signal line and a reference potential; applyin g an off voltage to g ates of each transistor in the first set of transistors; and applyin g an on voltage to g ates of each transistor in the plurality of transistors that are not in the first set, wherein t he plurality of transistors includes GaN HEMT devices with insulated gate terminals, and wherein the off voltage is generated by a negative voltage inverting circuit. Currently amended
The method of claim [[13]] 15, further comprising: receiving an off voltage command indicating a voltage value; and configuring, based on the off voltage command, a voltage generator to provide the voltage value as the off voltage to apply to gates of each transistor in the first set of transistors. Currently amended
The method of claim 16, wherein the off voltage is a negative voltage, wherein the voltage generator includes a charge pump with a selectable number of stages, and wherein the configuring includes configuring the charge pump to use the selectable number of stages. Currently amended
A combination signal switch and adjustable threshold power limiter circuit, comprising: a first plurality of switching elements and a second plurality of switching elements, each of the first plurality of switching elements and the second plurality of switching element comprising at least a respective first switching element and a respective second switching element, each respective switching element in the first plurality of switching elements and the second plurality of switching elements comprising: a respective first terminal, a respective second terminal, and a respective insulated gate terminal, and operable to form, based on a voltage between its insulated gate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a first series switching element coupling a signal input to a first signal output; a first conductive path between the first signal output and a reference potential, the first conductive path comprising each switching element in the first plurality of switching elements connected in a series arrangement; a second series switching element coupling the signal input to a second signal output; a second conductive path between the second signal output and a reference potential, the second conductive path comprising each switching element in the second plurality of switching elements connected in a series arrangement; and a controller electrically coupled to a gate of the first series switching element, a gate of the second series switching element, and each respective insulated gate terminal of each switching element in the first plurality of switching elements and the second plurality of switching elements, the controller configured to selectably provide a respective control voltage to each respective insulated gate terminal, each respective control voltage provided to each respective insulated gate terminal being selectable independently of one another between either one of a respective on voltage and a respective off voltage. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller providing a single voltage as the respective off voltage to all switching elements. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller comprising: a threshold command input coupled to a data interface, where the controller provides one of the respective off voltage or the respective on voltage to each respective insulated gate terminal of at least one of the first plurality of switching elements or the second plurality of switching elements based on a value of data received on the data interface. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, wherein each switching element in the first plurality of switching elements includes a GaN HEMT and each switching element in the second plurality of switching elements includes a GaN HEMT. New
Layer stacks claimed or described, ordered top of device to substrate.
adjustable threshold power limiter circuit
combination signal switch and adjustable threshold power limiter circuit
Materials described outside the worked examples.
GaN HEMT
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Response Recovery Time | < 0.1 ns ns | GaN HEMT |
Related documents with shared materials, methods, properties, or citations.
INTEGRATED GALLIUM NITRIDE POWER DEVICE WITH PROTECTION CIRCUITS
ANSWER CLASSIFIER AND REPRESENTATION GENERATOR FOR QUESTION-ANSWERING SYSTEM USING GAN, AND COMPUTER PROGRAM FOR TRAINING THE REPRESENTATION GENERATOR
Patent
Atlas literature
Patent
US 9,887,637Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 illustrates an example conventional limiter circuit. [0010]
FIG. 2 illustrates a power-in vs. power-out transfer function for an example conventional limiter circuit such as is illustrated in
FIG. 3 illustrates an example programmable limiter circuit, according to an example. [0012]
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
FIG. 5 illustrates a switching element configuration for a command that equals zero, according to an example. [0014]
FIG. 6 illustrates a switching element configuration for a command that equals one, according to an example. [0015]
FIG. 7 illustrates a switching element configuration for a command that equals two, according to an example. [0016]
FIG. 8 illustrates a switching element configuration for a command that equals three, according to an example. [0017]
FIG. 9 depicts a power-out versus power-in graph of the example programmable limiter circuit of
FIG. 10 illustrates a Radio Frequency (RF) switch block with integrated GaN-based limiter circuit, according to an example. [0019]
FIG. 11 illustrates a programmable limiter control process, according to an example.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
Canceled
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein the plurality of switching elements includes at least one intermediate switching element connected in series between the first switching element, the second switching element, and with one another. Currently amended
. Canceled
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal and its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path including each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller electrically coupled to each respective insulated gate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and provide a single voltage as the respective off voltage to all switching elements, the single voltage being negative with regards to the reference potential, wherein the adjustable threshold power limiter circuit further comprises a voltage inverter circuit generating the single voltage. Currently amended
The adjustable threshold power limiter circuit of claim 4, wherein the voltage inverter circuit includes a charge pump. Currently amended
The adjustable threshold power limiter circuit of claim 4, further comprising a single integrated circuit comprising the controller and voltage inverter circuit. Original
The adjustable threshold power limiter circuit of claim [[1]] 4, wherein each switching element in the plurality of switching elements includes a GaN HEMT. Currently amended
[[The]] An adjustable threshold power limiter circuit, comprising: a plurality of switching elements including at least a first switching element and a second switching element, each respective switching element including: a respective first terminal, a respective second terminal, and a respective insulated g ate terminal, and operable to form, based on a voltage between its insulated g ate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a conductive path between a signal input and a reference potential, the conductive path comprising each switching element in the plurality of switching elements connected in a series arrangement between the signal input and the reference potential; and a controller including a threshold command input coupled to a data interface, the controller electrically coupled to each respective insulated g ate terminal of each switching element, the controller configured to: receive a limiting threshold command, independently switch, based on the limiting threshold command, one of a respective on voltage and a respective off voltage to each respective insulated g ate terminal, the respective on voltage causing its respective switching element to form a conductive path between its respective first terminal and its respective second terminal, and prov ide one of the respective off voltage [[or]] an d the respective on voltage to each switching element based on a value of data received on the data interface. Currently amended
The adjustable threshold power limiter circuit of claim 10, the threshold command input receiving digital data indicating a threshold value, an d wherein the controller further includes a digital decoder with output lines including one respective output line for each switching element in the plurality of switching elements, the digital decoder provides the respective on voltage to a first set of output lines comprising a number of output lines corresponding to a value in the digital data, and the digital decoder provides the respective off voltage to output lines other than the first set of output lines. Currently amended
The adjustable threshold power limiter circuit of claim 10, wherein each switching element in the plurality of switching elements includes a GaN HEMT. New
Canceled
The method of claim [[13]] 15, wherein a single voltage is applied as the off voltage to all gates of each transistor in the first set of transistors. Currently amended
[[The]] A method, comprising: receiving a threshold command; determining, based on the threshold command, a first set of transistors within a plurality of transistors, the first set of transistors being selected to be biased in an off condition, and the plurality of transistors being connected in series with one another to form a shunt between a signal line and a reference potential; applyin g an off voltage to g ates of each transistor in the first set of transistors; and applyin g an on voltage to g ates of each transistor in the plurality of transistors that are not in the first set, wherein t he plurality of transistors includes GaN HEMT devices with insulated gate terminals, and wherein the off voltage is generated by a negative voltage inverting circuit. Currently amended
The method of claim [[13]] 15, further comprising: receiving an off voltage command indicating a voltage value; and configuring, based on the off voltage command, a voltage generator to provide the voltage value as the off voltage to apply to gates of each transistor in the first set of transistors. Currently amended
The method of claim 16, wherein the off voltage is a negative voltage, wherein the voltage generator includes a charge pump with a selectable number of stages, and wherein the configuring includes configuring the charge pump to use the selectable number of stages. Currently amended
A combination signal switch and adjustable threshold power limiter circuit, comprising: a first plurality of switching elements and a second plurality of switching elements, each of the first plurality of switching elements and the second plurality of switching element comprising at least a respective first switching element and a respective second switching element, each respective switching element in the first plurality of switching elements and the second plurality of switching elements comprising: a respective first terminal, a respective second terminal, and a respective insulated gate terminal, and operable to form, based on a voltage between its insulated gate terminal and one of its first terminal or its second terminal exceeding a threshold, a respective conductive path between its first terminal and its second terminal; a first series switching element coupling a signal input to a first signal output; a first conductive path between the first signal output and a reference potential, the first conductive path comprising each switching element in the first plurality of switching elements connected in a series arrangement; a second series switching element coupling the signal input to a second signal output; a second conductive path between the second signal output and a reference potential, the second conductive path comprising each switching element in the second plurality of switching elements connected in a series arrangement; and a controller electrically coupled to a gate of the first series switching element, a gate of the second series switching element, and each respective insulated gate terminal of each switching element in the first plurality of switching elements and the second plurality of switching elements, the controller configured to selectably provide a respective control voltage to each respective insulated gate terminal, each respective control voltage provided to each respective insulated gate terminal being selectable independently of one another between either one of a respective on voltage and a respective off voltage. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller providing a single voltage as the respective off voltage to all switching elements. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, the controller comprising: a threshold command input coupled to a data interface, where the controller provides one of the respective off voltage or the respective on voltage to each respective insulated gate terminal of at least one of the first plurality of switching elements or the second plurality of switching elements based on a value of data received on the data interface. Original
The combination signal switch and adjustable threshold power limiter circuit of claim 18, wherein each switching element in the first plurality of switching elements includes a GaN HEMT and each switching element in the second plurality of switching elements includes a GaN HEMT. New
Layer stacks claimed or described, ordered top of device to substrate.
adjustable threshold power limiter circuit
combination signal switch and adjustable threshold power limiter circuit
Materials described outside the worked examples.
GaN HEMT
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 4 illustrates a threshold level command to transistor control relationship, according to an example. [0013]
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Response Recovery Time | < 0.1 ns ns | GaN HEMT |
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