LETTER
A wideband InP Gilbert-cell mixer using capacitive degeneration and current bleeding technique
2021 Volume 18 Issue 13 Pages 20210225
Details
2021 Volume 18 Issue 13 Pages 20210225
This letter presents a wideband and high conversion gain mixer based on Gilbert-cell in InP DHBT process. Capacitive degeneration is introduced to increase the bandwidth of the mixer with no voltage drop and few cost of area. Current bleeding technique is employed to improve conversion gain. Utilization of device ft is analyzed to achieve 0.919. The measurement demonstrates a conversion gain of 14.5 dB at 26 GHz with -3 dB bandwidth of 49 GHz. BW/ft of 0.306 and GBP of 260 GHz are obtained, which are believed to be among the best compared to mixers fabricated with the same size process.
