Buckley, J,Gaetano, D,McCarthy, KG,Loizou, L,O'Flynn, B,O'Mathuna, C

2014

April

Electronics Letters

Compact 433 MHz antenna for wireless smart system applications

Validated

WOS: 17 ()

50

572

573

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.

10.1049/el.2013.4312