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In this paper the analysis and investigations are carried out on portable antennas for worldwide interoperability for microwave access (WiMAX) applications of flexible coplanar waveguide (CPW)-feed split-triangular shaped patch (STSP). The proposed STSP antenna is fabricated from polyimide substrate material having the dimension of 18×20×0.1 mm3 (volume is 36 mm3). It resonates at 3.55 GHz frequency of a reflection coefficient (S11) of −24.45 dB and offers impedance bandwidth of 580 MHz (3.3–3.88 GHz) with a gain of 2.06 dBi. The STSP antenna has small size, light weight, low volume, and is flexible for WiMAX applications. Simulation and measured results of the proposed STSP antenna are in close agreement.

FLEXIBLE CPW-FED SPLIT-TRIANGULAR SHAPED PATCH ANTENNA FOR WIMAX APPLICATIONS