Dual-band integrated Wi-Fi PAs with load-line adjustment and phase compensated power detector

Abstract

A load-line adjusted 2.4GHz PA is designed to operate in full power (18dBm/150mA) & mid power (7dBm/19mA) in OFDM with ~130mA saving. To improve network throughput in dense environment with per-packet TX power control, the phase-compensated power detector achieves ±0.6dB accuracy for the entire 5GHz band over 2:1 VSWR and 16dBm±0.25dB over channel flatness in VHT80MCS9. The chip area is 0.21mm2 for load-line adjusted 2.4GHz PA and 0.13 mm2 for 5GHz PA with power detector.