Development and Experimental Measurements of a Tunable Antenna

Vasilis Raptis, Giorgos Tatsis, Spyridon K. Chronopoulos, Stavros Mallios, Panos Kostarakis

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Physics Department, University of Ioannina, Ioannina, Greece.

DOI: 10.4236/cn.2013.53026                

Abstract

Modern telecommunication systems need to be equipped with antennas that are precisely tuned to more than one frequency in order to allow operation in several bands. Antenna precise tuning to the desired frequency is very important for system performance. In this paper the operating frequency of a PIFA antenna is adjusted using a varactor. This configuration has the advantage of continuous tuning, thus correcting any frequency deviation due to environmental or other changes. The PIFA antenna’s tuning ranges from 860 MHz to 1025 MHz. Also, the geometry of the antenna is studied through simulations and the effect of the varactor is tested experimentally.

Keywords

PIFA; Mobile Antenna; Varactor; Frequency Tuning

Conflicts of Interest

The authors declare no conflicts of interest.

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