Abstract

This paper presents a power amplifier designed for Wi-Fi 6E using the 2μm gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) process. By employing third-order intermodulation signal cancellation, harmonic suppression, and an adaptive biasing scheme, the linearity performance of the circuit is improved. To achieve broadband performance, the power amplifier also incorporates gain distribution and multi-stage LC matching techniques. The measurement results indicate that, under a 5V supply voltage, it can achieve S₂₁ greater than 31dB, ΔG of ±0.723dB, and P1dB of 30.6dB within the 5.125GHz⁻⁷.125GHz frequency band. The maximum linear output power, which satisfies AM-AM < 0.2dB and AM-PM < 1°, is 26.5dBm, and the layout area is 2.34mm².

Abstract

This paper presents a power amplifier designed for Wi-Fi 6E using the 2μm gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) process. By employing third-order intermodulation signal cancellation, harmonic suppression, and an adaptive biasing scheme, the linearity performance of the circuit is improved. To achieve broadband performance, the power amplifier also incorporates gain distribution and multi-stage LC matching techniques. The measurement results indicate that, under a 5V supply voltage, it can achieve S₂₁ greater than 31dB, ΔG of ±0.723dB, and P1dB of 30.6dB within the 5.125GHz⁻⁷.125GHz frequency band. The maximum linear output power, which satisfies AM-AM < 0.2dB and AM-PM < 1°, is 26.5dBm, and the layout area is 2.34mm².

Abstract

This paper presents a power amplifier designed for Wi-Fi 6E using the 2μm gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) process. By employing third-order intermodulation signal cancellation, harmonic suppression, and an adaptive biasing scheme, the linearity performance of the circuit is improved. To achieve broadband performance, the power amplifier also incorporates gain distribution and multi-stage LC matching techniques. The measurement results indicate that, under a 5V supply voltage, it can achieve S₂₁ greater than 31dB, ΔG of ±0.723dB, and P1dB of 30.6dB within the 5.125GHz⁻⁷.125GHz frequency band. The maximum linear output power, which satisfies AM-AM < 0.2dB and AM-PM < 1°, is 26.5dBm, and the layout area is 2.34mm².

Abstract

This paper presents a power amplifier designed for Wi-Fi 6E using the 2μm gallium arsenide (GaAs) heterojunction bipolar transistor (HBT) process. By employing third-order intermodulation signal cancellation, harmonic suppression, and an adaptive biasing scheme, the linearity performance of the circuit is improved. To achieve broadband performance, the power amplifier also incorporates gain distribution and multi-stage LC matching techniques. The measurement results indicate that, under a 5V supply voltage, it can achieve S₂₁ greater than 31dB, ΔG of ±0.723dB, and P1dB of 30.6dB within the 5.125GHz⁻⁷.125GHz frequency band. The maximum linear output power, which satisfies AM-AM < 0.2dB and AM-PM < 1°, is 26.5dBm, and the layout area is 2.34mm².