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학술지 Passive Parasitic UWB Antenna Capable of Switched Beam-forming in the WLAN Frequency Band using an Optimal Reactance Load Algorithm
Cited 0 time in scopus
저자
이정남, 이용호, 이광천, 김태중
발행일
201912
출처
ETRI Journal, v.41 no.6, pp.715-730
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.2018-0393
협약과제
18HF1600, [전문연구실] 초고주파 이동통신 무선백홀 전문연구실, 김태중
초록
© 2019 ETRI We propose a switched beam-forming antenna that satisfies not only ultra-wideband characteristics but also beam-forming in the WLAN frequency band using an ultra-wideband antenna and passive parasitic elements applying a broadband optimal reactance load algorithm. We design a power and phase estimation function and an error correction function by re-analyzing and normalizing all the components of the parasitic array using control system engineering. The proposed antenna is compared with an antenna with a pin diode and reactance load value, respectively. The pin diode is located between the passive parasitic elements and ground plane. An antenna beam can be formed in eight directions according to the pin diode ON (reflector)/OFF (director) state. The antenna with a reactance load value achieves a better VSWR and gain than the antenna with a pin diode. We confirm that a beam is formed in eight directions owing to the RF switch operation, and the measured peak gain is 7 dBi at 2.45혻GHz and 10 dBi at 5.8혻GHz.
키워드
passive parasitic element, reactance load algorithm, switched beam-forming, ultra-wideband
KSP 제안 키워드
Beamforming antenna, Control systems, Error Correction, PIN Diode, Parasitic array, RF switch, Reactance load, Switched beam, UWB antenna, Ultra-Wide Band(UWB), WLAN frequency
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