Transformer matched gilbert mixer with active balun for D band transmitter

• DOI: 10.1002/mop.32219
• Publication Date: 2019-12-24T12:23:21Z
• Authors: Jiayang Yu; Jixin Chen; Huanbo Li; Peigen Zhou; Debin Hou; Wei Hong; Pinpin Yan
• Keywords: Balun; Frequency mixer; Wideband

Abstract A Gilbert mixer for the application of a D band transmitter is presented. In work, differential pair below mixing quad replaced by an active balun. source resistor introduced to improve balance performance Owing resistor, LO‐to RF isolation also improved. At output end, transformer‐based balun used transform signal single‐end and realize wideband match. The circuit designed on 130 nm SiGe BiCMOS technology with f T /f max 300/500 GHz. compact covers 5 GHz intermediate frequency (IF) tuning range (1 6 GHz) LO fixed at 150 measured 3‐dB bandwidth varying from 128 160 maximum −6 dB conversion gain, when tuned. And referred 1‐dB compression point (OP 1dB ) nearly −15 dBm. except test consumes 14 mW DC power.