NDLI: Reconfigurable reflectarray antenna using single-layer radiator controlled by PIN diodes

Content Provider	IET Digital Library
Author	Li, Yuezhou Abbosh, Amin
Abstract	A new type of pattern-reconfigurable reflectarray phased by reconfigurable unit cells that are centrally controlled by a laptop is presented. The proposed reflectarray with single-layer radiators employs a phasing element formed by a fixed-size circular ring attached by a variable-length arc phase delay line controlled by positive-intrinsic-negative diodes. The biasing network of the diodes is properly designed to minimise the interference between the radiating structure and the biasing circuit. To that end, the biasing circuit is placed on a substrate layer below the ground plane whereas the PIN switching diodes are embedded within radiators. The biasing signal is transmitted to the switching elements at the top layer using vias that penetrate the thin substrate layer, the foam layer and the ground plane. Investigations are carried out to verify the performances of the phasing element using a waveguide simulator. A reflectarray, which includes a C-band offset fed 8 × 8 elements, is configured to switch its main beam between 20° and 30° from the broadside direction. A biasing control unit is added to the fabricated reflectarray and activated using a laptop. The measured radiation patterns of the proposed reflectarray demonstrate a beam-switching characteristic from the broadside direction, which confirm the proposed design method.
Starting Page	664
Ending Page	671
Page Count	8
ISSN	17518725
Volume Number	9
e-ISSN	17518733
Issue Number	Issue 7, May (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/9/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2014.0227
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2014-12-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Advanced Biasing Control Unit Antenna Accessory Antenna Array Antenna Feeds Antenna Radiation Pattern Beam Switching Characteristic Biasing Control Circuit Biasing Network Biasing Signal Broadside Direction C-band Offset Fed 8×8 Elements Compact Laptop Delay Line Electromagnetic Compatibility Fixed-size Circular Ring Ground Plane Interference Interference Minimization Interference Suppression Junction And Barrier Diode Laptop Computers P-i-n Diode Pattern-reconfigurable Reflectarray Phasing Element PIN Switching Diode Pulse Circuit Radiating Structure Reconfigurable Reflectarray Antenna Reconfigurable Unit Cell Reflect Array Antenna Single-layer Radiator Substrate Layer Surface Mount PIN Diode Switching Element Thick Foam Layer Top Radiating Layer Variable-length Arc Phase Delay Line Vias Waveguide Waveguide And Microwave Transmission Line Waveguide Simulator
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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