짧은 길이에서도 높은 개구효율및전력처리용량을갖는저자세 그릴형 누설파 도파관 안테나 (Low-Profile Grill-Type Leaky Waveguide Antenna with High Aperture Efficiency and Power Handling Capacity in Short Channel)

서지정보

· 발행기관 : 한국전자파학회
· 수록지 정보 : 한국전자파학회 논문지 / 36권 / 1호 / 10 ~ 20페이지
· 저자명 : 김동현, 박찬영, 서동근, 윤익재, 윤영중

초록

본 논문에서는 전기적으로 짧은채널길이에서도높은개구효율과전력처리용량을갖는그릴형누설파도파관안테나가제안된다. 제안된안테나는최대의개구효율을위해설계파라미터들에대한안테나방사성능변화의관찰이진행되며설계된그릴형누설파도파관안테나의측벽보조구조를제안해효율적으로누출량을늘려8 λ의전기적으로짧은 안테나길이에서도단일채널122 %의개구효율을구현하며, 4채널섹터도파관분배기를결합해높은안테나이득을구현한다. 또한, 높은전력처리용량확보를위해설계된안테나의도파관내부는RF 윈도우를통해진공밀봉되며안테나주변을포함한2, 3중점에서전계분포분석을통해1.46 GW의이론적인전력처리용량이구현된다. 제안된안테나는 실제 제작되어 근접전계측정을통해약81 %의높은개구효율이실험적으로검증된다.

영어초록

In this paper, a grill-type leaky waveguide antenna with a high aperture efficiency and power handling capacity, even with an electrically short channel length, is proposed. To obtain the maximum aperture efficiency of the proposed antenna, variations in the antenna radiation performance were observed for the design parameters. The sidewall auxiliary structure design of the designed grille-type leaky waveguide antenna effectively increased the leakage amount to realize an aperture efficiency of 122 % for a single channel, even with an electrically short antenna length of 8 λ, and the 4-channel sectorial waveguide divider was combined to realize high antenna aperture efficiency and gain. In addition, the inside of the waveguide of the antenna designed to secure high power handling capacity is vacuum-sealed through an RF window, and the proposed antenna, through the field distribution analysis at triple points, including around the antenna, has a theoretical power processing capacity of 1.46 GW. The proposed antenna was fabricated, and its high aperture efficiency was experimentally verified through a near-field test.

참고자료

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