A Low-Profile and Compact Split-Ring Antenna with Horizontally Polarized Omnidirectional Radiation

Lertsakwimarn, Kittima; Phongcharoenpanich, Chuwong; Fukusako, Takeshi

doi:10.1155/2015/954562

A Low-Profile and Compact Split-Ring Antenna with Horizontally Polarized Omnidirectional Radiation

Author(s)

Lertsakwimarn, Kittima

Phongcharoenpanich, Chuwong

Fukusako, Takeshi

Date Issued

January 1, 2015

Type

Article

DOI

10.1155/2015/954562

Abstract

This paper presents a low-profile and compact printed antenna having an omnidirectional radiation pattern with horizontal polarization to the ground. The proposed antenna consists of an inner small fed ring, an outer coupled split ring, and a ground plane. The overall dimension of the proposed antenna is 45 mm × 50.5 mm × 11.6 mm (0.138λ 0 × 0.155λ 0 × 0.036λ 0). The-10-dB S 11 of the antenna covers the 920-MHz RFID band, and the gain is about 1.45 dBi in the parallel direction to the ground plane. The measured results show good agreements with the simulated results. Furthermore, the reasons for the low-profile structure and the omnidirectional radiation pattern are also discussed.

Citation

International Journal of Antennas and Propagation, 2015, 2015