Design of a SiGe HBT MMIC Double Balaned Up-converter for WLAN Applications

C-BAND WLAN용 SiGe HBT MMIC 이중평형형 상향주파수 혼합기

A SiGe HBT MMIC double balaced up-converter has been designed and fabricated for C-band WLAN applications. The up-converter is based on the Gilbert cell mixer with an active baluns for differential inputs of LO and IF signals. The designed up-converter exhibits a conversion gain 12.5dB for a -10 dBm LO power. It also exhibits LO-RF isolation of 19.3dBc, and IF-RF isolation of 23.3 dBc at a 1-dB compression point of -14.2dBm