A novel decade bandwidth resistive FET singly balanced MIC mixer using a broadband CPW to CPS balun is developed. The mixer uses two NEC71000 MESFETs and realized with uniplanar lines. At 17 dBm LO power and 1 GHz IF, the mixer shows a conversion loss of 5.7 to 11 dB for 2 to 20 GHz RF and 10 to 15 dB for 20 to 27 GHz RF. The IF bandwidth is from 10 MHz to 7 GHz. The signal orthogonality between RF and IF makes the IF signal may overlap the RF signal. The mixer shows an output P1dB of 11.5 dBm (corresponding to input P1dB of 18.5 dBm) at 8 GHz RF, 1 GHz IF and 16.5 dBm LO power. The input IP3 is 24 to 37 dBm corresponding to 2.5 to 20 GHz RF and 1 GHz IF. The mixer is fabricated on a 15 mil thick Al2O3 MIC substrate.
|Number of pages||4|
|Journal||IEEE MTT-S International Microwave Symposium Digest|
|State||Published - 1 Dec 1999|
|Event||Proceedings of the 1999 IEEE MTT-S International Microwave Symposium Digest 'The Magic Touch of Microwaves' - Anaheim, CA, USA|
Duration: 13 Jun 1999 → 19 Jun 1999