Abstract
AbstractThe radiation performance of a right triangular microstrip antenna (RTMA) having two parallel narrow slits is simulated using IE 3D software, and later this antenna is designed on glass epoxy FR‐4 substrate with an air gap and tested in free space. The slit length, width, and thickness of air gap are optimized to attain best performance from the modified RTMA structure. The designed antenna with an air gap of 1.0 mm resonates at two different frequencies and presents 29% bandwidth. The antenna matches well with the feed line for both the resonance frequencies. The simulated E‐ and H‐plane radiation patterns are presented at four frequencies with in the range of frequencies where broadband response is obtained. These four patterns are almost identical in shape and their direction of maximum radiation intensity is normal to the patch geometry. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1082–1087, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25113
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