A 14-22GHz Monolithic Double-Balanced Passive Mixer

In this paper, a passive double-balanced mixer operating at 14-22GHz is designed based on the
$0.15_{5}\mathrm{m}$
pHEMT GaAs process provided by WIN Semiconductor. The RF/LO frequency of the mixer is 14GHz-22GHz, and the IF frequency range is DC-4GHz. The ring-shaped mixing ring is composed of four MOS transistors connected with drain and source, and the RF and LO ports are spiral Marchand balun. The simulation results show that when the LO power is 13dBm, the frequency conversion loss is about 10dB, the isolation of LO/RF port and LO/IF port are both greater than 30dB, and that of RF/IF port is greater than 20dB. Chip size is
$1.5 \text{mm}\times 0.9\text{mm}$
.