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Wireless local area network (WLAN) applications nowadays has become more popular especially those operating in the S-band (2. 0-4. 5Ghz). This paper present the design and enhancement of gain and bandwidth of microstrip antenna using the Agilent layout and probe feed. The antenna were designed to operate at S-band (2. 0-4. 5GHz). The dimensions of each single element of the microstrip antenna, at the operating frequency was calculated using transmission line model and the S-parameters data were obtained using Agilent simulator. The scaling factor of 1. 10 was considered for the design on FR4 substrate with = 4. 77 with thickness of 1. 62mm and 0. 019 and proved to be operating with adequate bandwidth and radiation characteristics.

Design and Investigation of Corporate Feed 4x2 Square Array Microstrip Antennas at S-Band