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Journal Article
λ/64-spaced Compact ESPAR Antenna via Analog RF Switches for a Single RF Chain MIMO System
- Authors
- Jung-Nam Lee, Yong-Ho Lee, Kwang-Chun Lee, Tae Joong Kim
- Issue Date
- 2019-08
- Citation
- ETRI Journal, v.41, no.4, pp.536-548
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- Abstract
- 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.
- KSP Keywords
- Antenna gain, Beam pattern, Impedance Bandwidth, MIMO system, Measured impedance, Monopole antenna, RF switch, Radio frequency (rf), Reactance load, Search Algorithm(GSA), Single RF chain
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
