상세정보
학술지
K-Band Phase Discriminator Using Multiport Downconversion for Monopulse Tracker
- 발행일
- 201706
- 출처
- IEEE Microwave and Wireless Components Letters, v.27 no.6, pp.599-601
- ISSN
- 1531-1309
- 출판사
- IEEE
- 협약과제
- 17HR2800, 차기위성 Flexible 통신방송 탑재체 핵심기술 개발, 장동필
- 초록
- In this letter, K-band phase discriminator based on multiport downconversion for monopulse tracking system is presented. The proposed architecture adopts multiple six-port junctions to individually process elevation and azimuth difference signals delivered from a multibeam antenna feed network. To produce accurate 2-D angular information, elevation and azimuth difference channel path calibration by reflection-type phase shifters and attenuators are also used. The proposed hybrid multiport junction was implemented with microstrip passive circuits and GaAs monolithic microwave integrated circuits. The performance was verified at the satellite downlink frequency of 20 GHz by successful generations of quadrature I/Q signals according to elevation or azimuth difference signal variations.
- 키워드
- K-band monolithic microwave integrated circuit (MMIC), Monopulse tracker, Phase discriminator, Six-port architecture
- KSP 제안 키워드
- Angular information, Antenna Feed, Difference channel, Difference signal, Feed network, K-band, Microwave monolithic integrated circuits(MMIC), Monopulse tracking, Multibeam antenna, Path Calibration, Phase Shifter