Title :
An Electrically Small Frequency Reconfigurable Antenna With a Wide Tuning Range
Author :
Yu, Yufeng ; Xiong, Jiang ; Li, Hui ; He, Sailing
Author_Institution :
Center for Opt. & Electromagn. Res., Zhejiang Univ., Hangzhou, China
fDate :
7/3/1905 12:00:00 AM
Abstract :
An electrically small frequency-reconfigurable antenna with a very wide tuning band is proposed. Three varactor diodes are used to achieve the tunable capacitance. With a modifled feeding structure, the measured tuning range of the fabricated antenna reaches from 457.5 to 894.5 MHz, and the tuning band enhancement is also explained through an equivalent circuit analysis.
Keywords :
UHF antennas; antenna feeds; capacitance; equivalent circuits; tuning; varactors; electrically small frequency reconfigurable antenna fabrication; equivalent circuit analysis; feeding structure; frequency 457.5 MHz to 894.5 MHz; tunable capacitance; tuning band enhancement; varactor diode; wide tuning range; Antenna measurements; Antennas; Capacitance; Couplings; Impedance matching; Tuning; Varactors; Capacitive load; electrically small antennas (ESAs); inductive feed; loop antennas; reconfigurable antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2113390
