An Azimuth-Pattern-Reconfigurable Antenna With Enhanced Gain and Front-to-Back Ratio

This letter presents a novel gain-enhanced pattern reconfigurable antenna. The proposed antenna consists of a windmill-shaped reconfigurable feeding network, four Vivaldi-shaped slots, and four groups of reconfigurable artificial structures. By electrically controlling the p-i-n diodes integrated in...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2017-01, Vol.16, p.2303-2306
Main Authors: Cheng, You-Feng, Ding, Xiao, Wang, Bing-Zhong, Shao, Wei
Format: Article
Language:English
Subjects:
Antenna measurements
Antenna radiation patterns
Antennas
Feeding
Gain
Gain measurement
P-i-n diodes
Pattern reconfigurable antenna (PRA)
PIN diodes
reconfigurable artificial structure (RAS)
Switches
Vivaldi-shaped slot
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Summary:This letter presents a novel gain-enhanced pattern reconfigurable antenna. The proposed antenna consists of a windmill-shaped reconfigurable feeding network, four Vivaldi-shaped slots, and four groups of reconfigurable artificial structures. By electrically controlling the p-i-n diodes integrated in the feeding network and in the artificial surface, four endfire radiation patterns with enhanced gain and front-to-back ratio (FBR) are realized. The antenna is simulated and measured. Measured results show that, with the loaded reconfigurable artificial surface, a gain enhancement of 1.0-3.5 dB and an FBR improvement of 4.5-8.2 dB over a wide band of 5.35-6.45 GHz are obtained.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2715373