Single Feed Aperture Coupled Circular Broadband Microstrip Patch Antenna

摘要

In this work a single feed aperture coupled broadband microstrip patch antenna is proposed for wireless communications. Two FR4 dielectric substrates of dielectric constant 4.4, thickness 1.6 mm and three metallic substrates are used. A T-shaped metallic substrate with aperture is incorporated in between two dielectric substrates. A circular patch is presented as a microstrip antenna with T-shaped ground plane. The maximum simulated frequency band of 4.39 GHz (1.57 - 5.96 GHz) with multi resonant frequencies at 1.67 GHz, 2.57 GHz, 4.07 GHz and 5.61 GHz are found. The percentage bandwidth of 116.62% with 1.6 dBi gain is achieved. The proposed antenna is simulated and measured using Ansoft designer software and Network analyzer for Bluetooth, WIMAX, WLAN and 2.4, 5.8 ISM band applications.