A 150GHz amplifier based on coupled transmission line neutralization with 22dB gain in 65nm CMOS

A four-stage common-source (CS) amplifier is designed in a 65 nm CMOS process for the unlicensed D-band. Each stage bases on the technique of coupled transmission line (T-line) neutralization to achieve high performance. Transmission line is also used to provide inter stage impedance match together with transformers. T-junction network is used for input and output matching. With the proposed techniques, simulations show that the proposed circuit achieves a gain of 22 dB along with a 3dB bandwidth of 9GHz, and a power consumption of 33 mW from a 1.2 V supply.