Compact 433 MHz antenna for wireless smart system applications

被引：20

作者：

Buckley, J. ^{[1
]}

Gaetano, D. ^{[2
]}

McCarthy, K. G. ^{[3
]}

Loizou, L. ^{[1
]}

O'Flynn, B. ^{[1
]}

O'Mathuna, C. ^{[1
]}

机构：

[1] Tyndall Natl Inst, Cork, Ireland

[2] Dublin Inst Technol, Antenna & High Frequency Res Ctr, Dublin, Ireland

[3] Natl Univ Ireland Univ Coll Cork, Dept Elect & Elect Engn, Cork, Ireland

来源：

ELECTRONICS LETTERS | 2014年 / 50卷 / 08期

关键词：

Directional patterns (antenna) - Natural frequencies - Radio transceivers - Antenna grounds - Capacitive sensors - Microstrip antennas - Spiral antennas - Omnidirectional antennas;

D O I：

10.1049/el.2013.4312

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compact, planar antenna operating at 433 MHz is proposed for wireless smart systems with dimensions of 51 x 28 mm(2) including a ground plane, and printed on a low-cost FR4 material. Significant size reduction is achieved using the variation of an inverted-F antenna configuration with a square-spiral section and rectangular patch element. Fine-tuning of the antenna's resonant frequency is possible using a small capacitive stub. Sensor and radio transceiver electronics can be accommodated above the ground plane. The measured results indicate a 10 dB return loss bandwidth of 4.5 MHz, and a peak realised gain of -13 dBi with omnidirectional radiation characteristics.

引用

页码：572 / 573

页数：2

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