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학술지 An Active IF Balun for a Doubly Balanced Resistive Mixer
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저자
정진철, 염인복, 염경환
발행일
200904
출처
IEEE Microwave and Wireless Components Letters, v.19 no.4, pp.224-226
ISSN
1531-1309
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LMWC.2009.2015503
초록
In this letter, we present a wideband active intermediate frequency (IF) balun for a doubly balanced resistive mixer implemented using a 0.5 μm GaAs pHEMT process. The 0.3 ×0.5 mm2 IF balun was realized through a dc-coupled differential amplifier in order to extend IF frequency of the mixer to dc. The measured amplitude and phase imbalances were less than 1 dB and 5째, respectively, from dc to 7 GHz. The output third order intercept (OIP3) and P1 dB of the IF balun were 18 dBm and 6 dBm, respectively at 1 GHz. The mixer with the IF balun is 1.7 × 1.8 mm2 in size, has a conversion loss of 2 to 8 dB from 8 to 20 GHz RF frequency at a fixed IF of 1 kHz, which proves the mixer operates successfully at an IF frequency close to dc. The measured OIP3 were +10 to +15 dBm over the operating frequency with a dc power consumption of 370 mW. © 2009 IEEE.
키워드
Active intermediate frequency (IF) balun, Doubly balanced mixer (DBM), GaAs monolithic microwave integrated circuit (MMIC), Marchand balun, Resistive mixer
KSP 제안 키워드
Active intermediate, Conversion loss, DC-coupled, Dc power, GaAs pHemt, Intermediate frequency, Marchand Balun, Microwave monolithic integrated circuits(MMIC), Operating frequency, Power Consumption, RF frequency