Title :
A New Magneto-Dielectric Material Loaded, Tunable UHF Antenna for Handheld Devices
Author :
Ferrero, Fabien ; Chevalier, Amelie ; Ribero, J.M. ; Staraj, Robert ; Mattei, J.L. ; Queffelec, Y.
Author_Institution :
Lab. of Electron. Antenna & Telecommun. (LEAT), Valbonne, France
fDate :
7/3/1905 12:00:00 AM
Abstract :
In this letter, the impact of a magneto-dielectric resonator on a DVB-H antenna is investigated. A frequency reconfigurable antenna using a folded monopole antenna structure and varactor diodes is proposed. Two different designs are realized with and without the resonator. A measured instantaneous -6-dB bandwidth wider than 8 MHz is obtained continuously between 470 and 862 MHz for both prototypes. Design methodology is described. Measured return loss, gain, directivity, and radiation pattern are presented for different frequencies.
Keywords :
UHF antennas; antenna radiation patterns; dielectric materials; dielectric resonators; digital video broadcasting; directive antennas; magnetic materials; monopole antennas; television antennas; DVB-H antenna; directivity; folded monopole antenna structure; frequency reconfigurable antenna; handheld devices; magneto-dielectric material; magneto-dielectric resonator; radiation pattern; return loss; tunable UHF antenna; varactor diodes; Antenna measurements; Bandwidth; Dielectric resonator antennas; Digital video broadcasting; Magnetic separation; Materials; Ferrite devices; UHF antennas; receiving antennas; varactors;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2167118
