A 143GHz power amplifier based on over neutralization and power combining technique in 65nm CMOS
This paper presents a 143GHz power amplifier using eight-path power combiner in a 65nm CMOS. The Over neutralization technique is proposed to boost the gain of a differential pair without extra penalty on power consumption. A four-stage PA achieves a maximum gain of 17.3dB at 143GHz with a 3dB bandwidth of 4GHz. Based on the eight-path power combining technology, it delivers up to 13.2dBm saturated output power and obtains a peak PAE better than 5.6% at 143GHz, the P1dB is better than 8.6dBm. The whole circuit consumes 336mw of power from a 1.4V supply.