Compact Low Frequency Varactor Loaded Tunable SRR Antenna

Author

Shaozhen Zhu ; Holtby, D.G. ; Ford, Kenneth L. ; Tennant, Alan ; Langley, Richard J.

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Sheffield, Sheffield, UK

Volume

61

Issue

4

fYear

2013

fDate

4/1/2013 12:00:00 AM

Firstpage

2301

Lastpage

2304

Abstract

An electrically small tunable split ring resonator antenna is presented. The resonance of the antenna is dependent on the resonance of the split rings. By loading the split ring with varactor diodes, the antenna operating frequency can be reduced and tuned. By applying a DC voltage of 1 to 9 V, the antenna is capable of tuning within the frequency range of 365 MHz to 500 MHz with the measured reflection coefficient of -10 dB. The antenna is compact and low profile. At the operation frequency of 365 MHz, it measures 0.095 λ×0.046 λ×0.001λ , where λ is the free space wavelength.

Keywords

UHF antennas; UHF resonators; varactors; compact low frequency varactor loaded tunable SRR antenna; electrically small tunable split ring resonator antenna; frequency 365 MHz to 500 MHz; measured reflection coefficient; varactor diodes; voltage 1 V to 9 V; Antenna measurements; Frequency measurement; Loaded antennas; Microwave antennas; Resonant frequency; Varactors; Electrically small antenna (ESA); Split ring resonator (SRR); tunable antenna;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2239952

Filename

6410348