Ku 밴드 안테나 급전시스팀 설계 = Design of Antenna Feed System for Ku Band

다국어 초록 (Multilingual Abstract)

In this paper. design of the antenna feed system for Ku-band is presented by TE_(mn)^(x) mode theory. The antenna feed system consists of diplexer combined with transmitting filter and receiving filter, OMT(Othogonal Mode Transducer) and polarizer. These filters are designed by the insertion loss method which is applied to the mode matching method. Matching elements in the inner waveguide set to reduce mismatching conditions on the discontinuity imposed by T-junction, so that a diplexer is optimized and has the best property. The optimum filter appeared characteristics that reflected power is about -2OdB in the receiving and the transmitting
passband. The differential phase shift of the corrugated polarizer combined with OMT achieved 90°±1° within 14.0 - 14.5㎓ frequency-band. The maximum VSWR is only about 1.02 and axial ratio(AR) is about 1.01. The designed feed system has suitably separated between the polarized wave and the frequency bandwidth.

목차 (Table of Contents)

• ABSTRACT = 31
• Ⅰ. 서론 = 31
• Ⅱ. 위성통신 지구국용 Ku 밴드 급전시스팀 = 32
• Ⅲ. 송·수신 여파기 설계 = 32
• Ⅳ. 직교모드 변환기 설계 = 34
• Ⅴ. 시뮬레이션 결과 = 37
• Ⅵ. 결론 = 38
• <참고문헌> = 40