TY - JOUR
T1 - A 23-37 GHz miniature MMIC subharmonic mixer
AU - Lin, Che Hung
AU - Lai, Yu Ann
AU - Chiu, Jui Chieh
AU - Wang, Yeong Her
N1 - Funding Information:
Manuscript received March 24, 2007. This work was supported in part by the National Chip Implementation Center, National Applied Research Laboratories and the National Science Council of Taiwan, R.O.C., under Contract NSC 94-2215-E-006-001 and by the Foundation of Chen, Jieh-Chen Scholarship, Tainan, Taiwan.
PY - 2007/9
Y1 - 2007/9
N2 - A novel configuration of subharmonic mixer using an anti-parallel diode pair is presented for operating over the 23-37 GHz band. The monolithic microwave integrated circuit is implemented by GaAs 0.15 μm PHEMT technology with the compact size of 0.85 × 0.85 mm2. This mixer employs a directional coupler, LC low-pass filter, and a short stub for isolating three ports corresponding to radio frequency (RF), local oscillation (LO) input, and intermediate frequency (IF) output ports. The directional coupler also provides impedance transformation between the diode pair, RF, and LO ports. This makes the subharmonic mixer more compact and flexible. The best conversion loss of the subharmonic mixer is 9.4 dB, and the LO-to-RF and LO-to-IF isolations are better than 22 and 31 dB, respectively.
AB - A novel configuration of subharmonic mixer using an anti-parallel diode pair is presented for operating over the 23-37 GHz band. The monolithic microwave integrated circuit is implemented by GaAs 0.15 μm PHEMT technology with the compact size of 0.85 × 0.85 mm2. This mixer employs a directional coupler, LC low-pass filter, and a short stub for isolating three ports corresponding to radio frequency (RF), local oscillation (LO) input, and intermediate frequency (IF) output ports. The directional coupler also provides impedance transformation between the diode pair, RF, and LO ports. This makes the subharmonic mixer more compact and flexible. The best conversion loss of the subharmonic mixer is 9.4 dB, and the LO-to-RF and LO-to-IF isolations are better than 22 and 31 dB, respectively.
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U2 - 10.1109/LMWC.2007.903460
DO - 10.1109/LMWC.2007.903460
M3 - Article
AN - SCOPUS:34548256228
VL - 17
SP - 679
EP - 681
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
SN - 1531-1309
IS - 9
ER -