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학술지 λ/64-spaced Compact ESPAR Antenna via Analog RF Switches for a Single RF Chain MIMO System
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저자
이정남, 이용호, 이광천, 김태중
발행일
201908
출처
ETRI Journal, v.41 no.4, pp.536-548
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2018-0374
협약과제
18HF1600, [전문연구실] 초고주파 이동통신 무선백홀 전문연구실, 김태중
초록
In this study, an electronically steerable parasitic array radiator (ESPAR) antenna via analog radio frequency (RF) switches for a single RF chain MIMO system is presented. The proposed antenna elements are spaced at {\\lambda}/64, and the antenna size is miniaturized via a dielectric radome. The optimum reactance load value is calculated via the beamforming load search algorithm. A switch simplifies the design and implementation of the reactance loads and does not require additional complex antenna matching circuits. The measured impedance bandwidth of the proposed ESPAR antenna is 1,500혻MHz (1.75혻GHz??3.25혻GHz). The proposed antenna exhibits a beam pattern that is reconfigurable at 2.48혻GHz due to changes in the reactance value, and the measured peak antenna gain is 4.8혻dBi. The reception performance is measured by using a 4 × 4 BPSK signal. The measured average SNR is 17혻dB when using the proposed ESPAR antenna as a transmitter, and the average SNR is 16.7혻dB when using a four-conventional monopole antenna.
키워드
analog RF switch, beam-space MIMO, ESPAR antenna, reactance load, single RF chain
KSP 제안 키워드
Analog RF switch, Antenna gain, Beam pattern, MIMO system, Measured impedance, Monopole antenna, Reactance load, Search Algorithm(GSA), Single RF chain, Space MIMO, antenna elements
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