Abstract
This paper propounds a flexible microstrip patch antenna design using flexible FR4 as substrate has been proposed. The antenna design employs a step notched copper patch of thickness 0.017mm on the top of dielectric substrate FR4 of thickness 1.57mm and reduced copper ground plane of thickness 0.05mm on the other side of the substrate. The proposed flexible patch antenna is capable of operating in frequency range of 2.337 GHz–2.511GHz with 2.418 GHz as the resonant frequency which is suitable to be employed for WLAN, Bluetooth and ISM applications. The performance of the designed antenna has been measured in terms of impedance bandwidth (174MHz), return loss (−49.21dB), gain (5.245dB) and directivity(4.574dBi). The antenna has VSWR less than 2 in the operating frequency range. The proposed antenna has been designed in CST Microwave Studio 2014. The proposed antenna has been fabricated and tested using E5071C Network Analyser and anechoic chamber. It has been observed that the stimulated results closely match with the experimental results.
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