상세정보
학술지
Design of double-balanced MMIC mixer for Ka-band satellite communications
- 저자
- 류근관, 장동필, Moon-Que Lee, 염인복, 이성팔
- 발행일
- 200209
- 출처
- Microwave and Optical Technology Letters, v.34 no.6, pp.401-403
- ISSN
- 0895-2477
- 출판사
- Wiley
- 협약과제
- 02MR2100, 통신방송위성 개발, 이성팔
- 초록
- A MMIC (monolithic microwave integrated circuit) mixer chip using the Schottky diode of an InGaAs/GaAs p-HEMT process has been developed to act as the receiver down converter of a Ka-band satellite transponder. A different approach to the MMIC mixer structure is applied for reducing the chip size by the exchange of ports between IF and LO. This MMIC covers with RF (30.6-31.0 GHz) and IF (20.8-21.2 GHz.) According to the on-wafer measurement, the miniature (3.0 × 1.5 mm) MMIC mixer demonstrates conversion loss below 7.8 dB, LO-to-RF isolation above 27 dB, LO-to-IF isolation above 19 dB, and RF-to-IF isolation above 40 dB, respectively.
- KSP 제안 키워드
- Conversion loss, LO-to-RF isolation, Microwave monolithic integrated circuits(MMIC), double-balanced, down-converter, ka-band, microwave integrated circuit, on-wafer measurement, pseudomorphic high electron mobility transistor(pHEMT), satellite communication, schottky diode