S/X 이중 대역 공통개구면 배열안테나의 고내구성 설계 (Highly Durable Design of an S/X Dual-Band Shared Aperture Array Antenna)

서지정보

· 발행기관 : 한국전자파학회
· 수록지 정보 : 한국전자파학회 논문지 / 36권 / 2호 / 119 ~ 127페이지
· 저자명 : 임은열, 장도영, 추호성, 이준용

초록

본논문에서는가혹한해상환경을고려하여고내구성설계가적용된S/X 대역공통개구면배열안테나를제안한다.
제안된안테나는X 대역소자층상단에S 대역소자층이적층되는공통개구면구성을가지며, X 대역소자는향상된내구성을갖기위해고내구성급전핀구조를포함한다. 고내구성급전핀구조는도체패드와비아홀, 금속핀을포함하며, 여러방향에서들어오는외부충격에의해안테나에약간의손상이발생해도이로인한안테나의성능변화를방지한다.
안테나의대역폭을향상시키고방사패턴왜곡을방지하기위해, 격자구조레진프레임이S 대역소자층사이에삽입되며, 이 구조는 견고하게 준공기층을형성한다. 또한, 안테나의 최외곽은 금속 프레임으로 둘러싸여있어안테나의내구성을더욱향상시킨다. 제안된안테나의대역폭은S 대역에서13.3 %, X 대역에서17.8 %로나타났다. 추가적으로, LS-Dyna 시뮬레이터를 사용한모의충격시험에서, 제안된고내구성안테나는수직또는수평방향에서최대1,250 MPa 과 1,400 MPa의 충격이 가해지더라도 대역폭 감소는 10 % 미만으로 나타났다.

영어초록

In this study, we proposed an S/X-band shared aperture array antenna with a highly durable design that considers the harsh maritime environment. The proposed antenna had a shared aperture configuration in which the S-band element layers were stacked on top of the X-band element layers, and the X-band element had a highly durable feed-pin structure to improve the antenna durability. The highly durable feed pin consisted of conducting pads, via holes, and an inner pin, which prevented antenna performance changes owing to slight deformations caused by external shocks from various directions. To improve the antenna bandwidth and prevent the antenna pat tern distortion, a lattice-shaped resin frame structure was inserted between the S-band element layers, and this structure could form the solid quasi-air gap. Moreover, the outermost part of the antenna was surrounded by a metal frame, which further improved its durability.
The bandwidths of the proposed antenna in the S and X bands were 13.3 % and 17.8 %, respectively. In addition, in a durability test using the LS-Dyna simulator, the proposed highly durable antenna had a bandwidth reduction of less than 10 % when external shocks of up to 1,250 and 1,400 MPa were applied in the vertical and horizontal directions of the antenna, respectively.

참고자료

· 없음