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Type: Journal article
Title: A frequency- and pattern-reconfigurable center-shorted microstrip antenna
Author: Nguyen-Trong, N.
Hall, L.
Fumeaux, C.
Citation: IEEE Antennas and Wireless Propagation Letters, 2016; 15:1955-1958
Publisher: Institute of Electrical and Electronics Engineers
Issue Date: 2016
ISSN: 1536-1225
Statement of
Nghia Nguyen-Trong, Leonard Hall and Christophe Fumeaux
Abstract: A frequency- and pattern-reconfigurable antenna based on a center-shorted microstrip patch is presented. The novel design utilizes two resonance modes of a microstrip antenna with shorting vias at the patch center. To set up the antenna tuning mechanism, two groups of varactors with a measured tuning range of [0.149, 1.304] pF are placed at two opposite sides of the antenna, followed by open-circuited loading stubs. For a particular bias voltage configuration, the structure operates as a dual-band antenna with broadside radiation at the upper resonance frequency and monopole-like radiation at the lower band. By varying the dc bias voltage, both resonance frequencies can be changed simultaneously. Based on the proposed concept, a demonstration antenna has been designed so that the two types of aforementioned patterns can be reconfigured across a continuous fractional frequency range of more than 20%. Experimental results are provided, which validate the proposed concept and design procedure.
Keywords: Frequency-reconfigurable antennas; microstrip antennas; pattern-reconfigurable antennas; reconfigurable antennas
Rights: © 2016 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
DOI: 10.1109/LAWP.2016.2544943
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Electrical and Electronic Engineering publications

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