A novel common emitter common collector transistor pair (CECCTP) mixer is presented. A LO pumped CECCTP enables even harmonic mixing operation, and a balanced CECCTP mixer configuration enables the suppression of both 2fLO and fIM2 which are undesirable component for direct conversion mixer. A 2 GHz-band balanced CECCTP mixer is fabricated in SiGe HBT process, and the direct conversion characteristics are measured. It performs conversion gain of 8.8dB, NF of 14.9dB and IIP2 of 42.3dBm when LO power is -6dBm, supplied voltage is 3 V and current is 5 mA.
|Number of pages||7|
|Journal||IEICE Transactions on Electronics|
|Publication status||Published - 2002 Jul|
- Heterojunction bipolar transistor (HBT)