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A Frequency Tuning Method for a Planar Inverted-F Antenna

Komulainen, M, Berg, M, Jantunen, H, Salonen, E T and Free, C (2008) A Frequency Tuning Method for a Planar Inverted-F Antenna IEEE Transactions on Antennas and Propagation, 56 (4). ISSN 0018-926X

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Abstract

A novel method is presented for electrically tuning the frequency of a planar inverted-F antenna (PIFA). A tuning circuit, comprising an RF switch and discrete passive components, has been completely integrated into the antenna element, which is thus free of dc wires. The proposed tuning method has been demonstrated with a dual-band PIFA capable of operating in four frequency bands. The antenna covers the GSM850, GSM900, GSM1800, PCS1900 and UNITS frequency ranges with over 40% total efficiency. The impact of the tuning circuit on the antenna's efficiency and radiation pattern have been experimentally studied through comparison with the performance of a reference antenna not incorporating the tuning circuit. The proposed frequency tuning concept can be extended to more complex PIFA structures as well as other types of antennas to give enhanced electrical performance.

Item Type: Article
Additional Information: Published in <i>Transactions on Antennas and Propagation,</i> Vol. 56, Iss. 4. Copyright 2008 IEEE. Click <a href=http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/371

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