절대공동체, 반(反)정치의 신화

김정한,

doi:10.17787/jsgiss.2012.20.2.104

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…특 히 안테나에 PIN 다이오드나 커패시터, 인덕터와 같 은 집중 소자와 능동 소자의 실장으로 공진 주파수 조절, 임피던스 매칭, 편파와 패턴의 가변이 용이하 다 [3], [4] . 최근까지 연구되고 있는 편파 재구성 안테나의 방식중 하나는 이중 급전 회로를 이용하여 직교하는 두 개의 선형 편파와 급전 회로 간 90° 위상차를 이 용하여 생성된 원형 편파를 재구성하는 방식이다.…”

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A Multi-Polarization Reconfigurable Microstrip Antenna Using PIN Diodes

Song¹,

Lee²,

Park³

et al. 2013

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, a multi polarization reconfigurable microstrip antenna that can be used selectively for four polarizations(vertical polarization, horizontal polarization, right hand circular polarization, left hand circular polarization) at the S-band is presented. The proposed antenna consists of four PIN diodes and a microstrip patch with a cross slot and a circular slot and is fed by utiliting electromagnetic coupling between the microstrip patch and the feed line. The proposed antenna has a DC bias network to supply DC voltage to each PIN diode and the polarization can be determined by controlling the ON /OFF states of four PIN diodes. The fabricated antenna has a VSWR below 2 in the vertical polarization(3.17～3.21 GHz), the horizontal polarization(3.16～3.20 GHz), the left hand circular polarization (3.08～3.19 GHz), and the right hand circular polarization(3.10～3.2 GHz) frequency bands. The designed antenna has the cross polarization level higher than 20 dB, a gain over 5 dBi for the linear polarization states, and 3 dB axial ratio bandwidth wider than 50 MHz in the circular polarization states.

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