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학술지 A Compact Ultra-Wideband Chip Antenna with Bandwidth Extension Patch and Simple Isolator for MIMO Systems for Mobile Handheld Terminals
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저자
이정남, 현석봉, 조영균
발행일
202205
출처
Journal of Electromagnetic Engineering and Science, v.22 no.3, pp.272-282
ISSN
2671-7255
출판사
한국전자파학회 (KIEES)
DOI
https://dx.doi.org/10.26866/jees.2022.3.r.87
협약과제
21HH1800, [통합과제] 초고주파 이동통신 무선백홀 전문연구실, 고영조
초록
A compact ultra-wideband (UWB) chip antenna that has high isolation for multi-input multi-output (MIMO) systems is presented in this paper. The antenna is composed of a chip antenna, a printed circuit board, and an isolator stub. High isolation was obtained using a simple stub, and a low-frequency band was extended by applying a bandwidth extension patch to the chip antenna. The pulse performance of the proposed antenna was measured by changing the angle of the receiving antenna. The proposed antenna was simulated by applying a hand phantom. The effect of the grip position of the hand phantom on the reflection coefficient, isolation, and gain was analyzed. The measured impedance bandwidth was 2.45 GHz to 9 GHz. The proposed UWB MIMO antenna has a high isolation, greater than 25 dB, at the operating frequency. The antenna gain varied from 3 dBi to 4.5 dBi over the operating frequency range. The measured group delay variation was less than 1 ns. The measured pulse features have negligible chirp and a small dispersion
KSP 제안 키워드
2.45 GHz, Antenna gain, Bandwidth extension, Chip antenna, Measured impedance, Multiple input multiple output(MIMO), Pulse performance, Receiving antennas, Reflection Coefficient, UWB MIMO antenna, Ultra-Wide Band(UWB)
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저작자 표시 - 비영리 (CC BY NC)