Shorted T-shaped monopole antenna for 2.4/5 GHz WLAN operation

A novel dual-frequency shorted T-shaped monopole antenna is proposed. The T-shaped monopole is comprised of two horizontal arms of different lengths, which generate two separate resonant modes for the desired dual-frequency operation, and one vertical arm is short-circuited to a ground plane through an inverted-L strip for good impedance matching. A prototype suited for WLAN operation in the 2.4- and 5-GHz bands for a laptop as an internal antenna is constructed and tested. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 202–203, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20093