Equilateral triangular microstrip array antenna for broadband operation

Abstract

This article presents a novel design of corporate fed four-element equilateral triangular microstrip array antenna (FETMSA) for multiband operation, which is attractive for emerging wireless communication systems. If FETMSA is fed through aperture, the coupling converts its multiband operation into triband operation. Further by using optimum slots in the radiating elements converts its tribands into dual wide bands, which may find application in synthetic aperture radar. The overall magnitude of impedance bandwidth is found to be 23.74% at X-band frequencies with broadside radiation characteristics. This impedance bandwidth is 2.61 times more when compared with the impedance bandwidth of FETMSA. © 2008 Wiley Periodicals, Inc.