ISM밴드에서 동작하는 급전 삽입형 패치 안테나의 설계 및 성능분석
The Design and Performance Analysis of Fed Inset Patch Antenna for ISM Band
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초록
본 연구는 삽입 급전 방식의 패치 안테나의 설계 및 이론을 제시하고, 2.42GHz의 주파수에서 설계된 1% -5%의 대역폭과, 6dBi의 이득, 반파장 사이즈의 30Ω에서 200Ω의 임피던스를 갖는 단방향성 방사패턴을 보이는 선형 편파된 삽입 급전의 패치안테나를 구성하고, 시뮬레이션과 결과분석을 통해 성능을 분석하였다. 삽입된 마이크로 스트립 패치 안테나는 2.42GHz의 공진 주파수에서 설계되고 시뮬레이션 되었다. 입력 반사 손실은 -21.05dB 및 이득 4.68dB가 얻어졌다. 제안된 설계는 단순한 설계 구조를 가지며 저렴한 비용으로 쉽게 구성 할 수 있으며, 시뮬레이션 결과는 안테나가 양호한 전기적 성능을 나타내므로 ISM 대역의 다양한 응용 분야에 적합한 후보로 간주 될 수 있음을 보여 주었다.
Abstract
This study presents the design theory of the patch antenna of the fed inset patch method and proposes a configuration of the fed inset patch antenna which have a unidirectional radiation pattern with a bandwidth of 1% - 5% designed at the frequency of 2.42GHz and a gain of 6dBi. There are several ways to feed the patch antenna, and the fed inset patch antenna is fed through a microstrip feed line connected to a particular point in the patch. The measured input impedance can be controlled by changing the position at which the microstrip is connected to the patch antenna. The reflection coefficient above was matched with a 50Ω microstrip line. A patch antenna with linearly polarized insertion feed is constructed and its performance is analyzed through suitable simulation and the analyzed results. The inserted microstrip patch antenna was designed and simulated at a resonant frequency of 2.42 GHz. The input return loss was -21.05 dB and the gain was 4.68 dB. The proposed design has a simple antenna structure and can be easily configured at low cost. The simulation results show that the antenna can be regarded as a candidate for various applications in the ISM band because of its good electrical performance.
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