상세정보
학술지
Design and Test of a Mobile Antenna System With Tri-Band Operation for Broadband Satellite Communications and DBS Reception
- 발행일
- 200711
- 출처
- IEEE Transactions on Antennas and Propagation, v.55 no.11, pp.3123-3133
- ISSN
- 0018-926X
- 출판사
- IEEE
- 협약과제
- 05MR2500, 이동형 광대역 위성전송 핵심기술 개발, 이호진
- 초록
- The tri-band mobile antenna system for broadband multimedia services in the Ka/K-band and a simultaneous direct broadcast service in the Ku-band has been developed. The radiating part of the antenna consists of a shaped dual reflector system and a tri-band feed of circular polarization. The low-profile offset main reflector has an aperture size of 60 cm × 20 cm; therefore, a fan beam is formed which is sharp in azimuth and wide in elevation. The feed system contains a protruding dielectric rod for Ka/K-band and 2 × 2 active phased array. The latter provides the beam for Ku-band along with four fast electrical beams for stable satellite tracking. The new tracking algorithm based on a fusion technique involving various sensors and fast electrical beams has also been introduced. The antenna system was mounted on a large ship and a test car, and successfully operated via Koreasat-3. © 2007 IEEE.
- KSP 제안 키워드
- Band operation, Broadcast service, Design and test, Dielectric rod, Dual reflector, K-band, Ku-Band, Large ship, Mobile Antenna, Multimedia Service, Satellite Tracking