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

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

951

Lastpage

954

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2167118

Filename

6009166