Compact highly integrated wide-tunable unidirectional dual-band patch antenna for wireless applications

A compact dual-band patch antenna with independent tuning of both frequencies is introduced. The frequency agility is achieved by inserting two varactor diodes into the radiating patch, while the antenna miniaturisation is realised by shorting one patch edge using metallised vias. Simulated and meas...

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Bibliographic Details
Published in:IET microwaves, antennas & propagation Vol. 11; no. 15; pp. 2194 - 2200
Main Authors: Boukarkar, Abdelheq, Lin, Xian Qi, Jiang, Yuan, Yu, Yi Qiang
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 10.12.2017
Subjects:
antenna miniaturisation
antenna radiation patterns
compact highly integrated wide‐tunable antenna
frequency 2.4 GHz to 3.18 GHz
frequency 4.1 GHz to 5.45 GHz
frequency agility
metallised vias
microstrip antennas
multifrequency antennas
radiating patch
radiocommunication
Research Article
simple direct current bias circuit
unidirectional dual‐band patch antenna
unidirectional radiation patterns
varactor diodes
wireless applications
radiating patch
unidirectional dual-band patch antenna
metallised vias
compact highly integrated wide-tunable antenna
microstrip antennas
wireless applications
unidirectional radiation patterns
antenna miniaturisation
frequency agility
antenna radiation patterns
simple direct current bias circuit
multifrequency antennas
radiocommunication
frequency 4.1 GHz to 5.45 GHz
frequency 2.4 GHz to 3.18 GHz
varactor diodes
ISSN:1751-8725, 1751-8733
Online Access:Get full text
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Description
Summary:A compact dual-band patch antenna with independent tuning of both frequencies is introduced. The frequency agility is achieved by inserting two varactor diodes into the radiating patch, while the antenna miniaturisation is realised by shorting one patch edge using metallised vias. Simulated and measured results are in good agreement. Measurements reveal that the two operating bands can be tuned separately without any frequency shifting and with high stability and similar unidirectional radiation patterns during the tuning process. The measured tunable ranges of the lower and upper bands are 27.95% (from 2.4 to 3.18 GHz) and 28.27% (from 4.1 to 5.45 GHz), with measured peak gains and efficiencies of [3.23 dBi, 65%] and [3.42 dBi, 62%], respectively. The antenna presents comparatively wide tuning ranges with similar unidirectional radiation patterns, has a miniaturised size, and uses a simple direct current bias circuit. Thus, it can be easily integrated and used in different wireless systems.
ISSN:1751-8725
1751-8733
DOI:10.1049/iet-map.2017.0662