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A compact and low-profile tunable loop antenna integrated with inductors

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journal contribution
posted on 09.03.2012, 15:09 authored by Dong Hyun Lee, Alford ChaurayaAlford Chauraya, J. C. Vardaxoglou, Wee Sang Park
We present a frequency-tunable, compact loop antenna which consists of a transmission line on a ground plane, two shorting posts, and two inductors which are serially connected between the posts and the edge of the transmission line. By properly choosing the inductance of the inductors, the operating frequency of the antenna can be controlled without seriously sacrificing fractional bandwidth. To demonstrate the operating mechanism, the equivalent circuit of this antenna is included. The characteristics of the antenna with various inductors integrated are also investigated. Fabricated antennas show that the operating frequency can be shifted from 2.07 GHz to 1.2 GHz using off-the-shelf inductors. Using two 33-nH inductors achieves an antenna with an electrical size as small as 0.118lambda times 0.013lambda times 0.047lambda. The validity of this antenna is demonstrated by experimental results.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

LEE, D.H....et al., 2008. A compact and low-profile tunable loop antenna integrated with inductors. IEEE Antennas and Wireless Propagation Letters, 7 pp. 621 - 624

Publisher

© IEEE

Version

VoR (Version of Record)

Publication date

2008

Notes

Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

ISSN

1536-1225

Language

en