상세정보
학술지
Passive Parasitic UWB Antenna Capable of Switched Beam-forming in the WLAN Frequency Band using an Optimal Reactance Load Algorithm
- 발행일
- 201912
- 출처
- ETRI Journal, v.41 no.6, pp.715-730
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 18HF1600, [전문연구실] 초고주파 이동통신 무선백홀 전문연구실, 김태중
- 초록
- 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.
- 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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