Broadband Low-Profile Printed T-Shaped Monopole Antenna for 5-GHz WLAN Operation

A broadband low-profile printed T-shaped monopole antenna is presented. It is demonstrated that, by short-circuiting the central arm of a low-profile T-shaped monopole to the ground plane, much improved impedance matching over a wide frequency range can be achieved. A constructed prototype showing a low profile of only 3 mm and a wide bandwidth larger than 1.1 GHz covering the 5.2/5.8-GHz WLAN bands is presented. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 243–245, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20265