Abstract
AbstractIn this paper, a multi‐band compact H‐shaped microstrip antenna is studied. The resonant modes of the H‐shaped structure are analyzed using the concept of electric and magnetic walls at the planes of symmetry. A flexible design approach that allows the pre‐selection of the resonant frequencies of the antenna is described. Approximate design equations and curves are introduced and validated by simulated and experimental results. An H‐shaped antenna is designed to support modes with resonance at 2.2, 2.8, 3, and 5 GHz. It is shown that dual‐, triple‐, or quad‐band operation is possible by the proper location of a coaxial feed. Such antennas are implemented on duroid dielectric substrate with εr = 2.2 and h = 1.57 mm. The designed antennas are simulated by IE3D software and a good agreement with experimental results is demonstrated. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 363–367, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10608
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