NDLI: Design and analysis of optically controlled pattern reconfigurable planar Yagi

Content Provider	IET Digital Library
Author	Zhang, Yuwei Lin, Shu Yu, Shang Liu, Guan Jun Denisov, Alex
Abstract	A novel pattern reconfigurable planar optically controlled Yagi–Uda antenna is proposed. The antenna comprises a director, a driven dipole, a reflector and the substrate. The two parasitic elements loaded with positive intrinsic negative (PIN) photodiodes in the middle, applied as manipulating switches, are capable of varying the radiation pattern by transforming their physical structures. A prototype of the proposed antenna along with PIN photodiodes was fabricated to verify the concept of optically controlled pattern reconfiguration. The simulated and experimental results indicate that the ∣ S 11 ∣ curves and radiation patterns of the proposed antenna in both the PIN switches' on and off state are similar; however, the direction of maximum radiation differs between these two states by 180 ∘ . Good unidirectional radiation patterns with the front-to-back ratios of 12 and 8 dB are obtained. About 10 dB impedance bandwidth can reach 15% and the maximum gain is more than 6.3 dBi. This study proposes a three-element equivalent current radiation model based on the current distribution from simulation, which can explain the directional radiation characteristics of the designed antenna well. This pattern reconfigurable antenna can be optically controlled remotely, reducing the effects of controlling network on the antenna radiator.
Starting Page	2053
Ending Page	2059
Page Count	7
ISSN	17518725
Volume Number	12
e-ISSN	17518733
Issue Number	Issue 13, Oct (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/12/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5204
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2018-07-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Array Antenna Radiation Pattern Antenna Radiator Current Distribution Dipole Antenna Array Directional Radiation Characteristic Director Driven Dipole Front-to-back Ratios Impedance Bandwidth Manipulating Switches P-i-n PhotoDiode Parasitic Element Pattern Reconfigurable Planar Optically Controlled Yagi-Uda Antenna Photoelectric Device PIN PhotoDiode PIN Switches Planar Antenna Array Reflector Reflector Antenna Relay And Switches Semiconductor Device Semiconductor Switches Substitution Three-element Equivalent Current Radiation Model Unidirectional Radiation Pattern Yagi Antenna Array
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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