Summary
International Symposium on Antennas and Propagation
2008
Session Number:3C29
Session:
Number:3C29-4
Low-Cost Metal-Plate Dipole Antenna for 2.4/5.2 GHz WLAN Operation
Yung-Tao Liu, Jui-Hung Chou, Saou-Wen Su, Fa-Shian Chang, Hong-Twu Chen,
pp.-
Publication Date:2008/10/27
Online ISSN:2188-5079
Summary:
Dipole antennas are simple in structure and have good radiation characteristics. Most of them are in the form of printed dipole structures [1-3] with two radiating arms spaced apart. However, for practical applications, coaxial-line-fed dipole antennas of a small form factor [1] are more costly by etching on a printed circuit board (PCB) than by stamping a piece of metal plate. In fact, small metalplate dipole antennas are very scant in the literature owing probably to the structure of two separate radiating arms such that dipoles can not easily be fabricated. In this paper, we demonstrate a simple, low-cost, metal-plate dipole antenna for dual-band WLAN operation in the 2.4 GHz (2400-2484 MHz) and 5.2 GHz (5150-5350 MHz) bands. The dipole antenna has a planar structure stamped from a single metal plate only and comprises two radiating arms and a shorting strip that short-circuits both radiating arms. Furthermore, by cutting an L-shaped slit in each radiating arm, two separate operating bands can easily be achieved for dual-band operation. Better omnidirectional-radiation patterns for the 2.4 GHz operation can be also obtained, compared with compact coaxial-line-fed metal-plate PIFAs such as designs in [4, 5]. The antenna is suitable to be assembled in corners of wireless electronics devices or PC peripherals for WLAN applications.