TITLE:
Development and Experimental Measurements of a Tunable Antenna
AUTHORS:
Vasilis Raptis, Giorgos Tatsis, Spyridon K. Chronopoulos, Stavros Mallios, Panos Kostarakis
KEYWORDS:
PIFA; Mobile Antenna; Varactor; Frequency Tuning
JOURNAL NAME:
Communications and Network,
Vol.5 No.3,
August
2,
2013
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.