Abstract
AbstractA printed wide‐slot antenna for portable ultrawideband application is presented in this article. It consists of a staircase‐shape patch and an arc‐shape slot etched on different sides of a thin microwave substrate. By using a microstrip feedline with matching stubs to excite the patch and placing a thin conductor‐backed absorber under the slot, wide impedance bandwidth (SWR < 2) of 132.8% and broadside radiation patterns are obtained. This antenna has a peak gain and an average gain of 4.7 and 3.7 dBi, respectively. Moreover, it has a low profile of 0.18λ, where λ is the free space wavelength referring to the center frequency of the operating bandwidth. The antenna is very suitable for the portable devices of nowadays UWB wireless communication systems. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 968–971, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22304
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