A V-band MMIC frequency quadrupler with active input matching

In this paper, a V-band frequency quadrupler circuit is presented. This quadrupler operates in the millimeter-wave band [56-64 GHz] and it is designed according to the MMIC technology (Monolithic Microwave Integrated Circuit) in PH15 process from UMS foundry. The frequency quadrupler circuit will be used to generate carrier frequencies in the range of [56-64 GHz] in order to perform the RF signal demodulation of wireless communication link in the mm-wave band. The required output power is obtained by a buffer amplifier on the output. By adjusting the common-gate PHEMT circuit connected to the input, The conversion gain is about 6.9 dB and the input return-loss can be tuned for near ideal 50Ω match (>18 dB). The signal at the fundamental frequency is rejected with a rate greater than 40 dB compared to the desired signal.