Performance Enhancement of Probe Feed Microstrip Patch Antenna for Wireless Applications

Microstrip antenna is widely used in advanced wireless communication. In recent years microstrip antenna has attracted more attention. In wireless communication, it is an important device, for communication above 1 GHz. It is used in satellite communication, mobile communication and aircraft communication applications. Microstrip antenna's advantages include easy to fabricate, low profile, easy to feed, incorporate with array elements and other IC's. In this paper a MicroStrip Patch Antenna (MPA) is designed for resonating frequency of 4GHz. The antenna designed with glass epoxy (FR4). The U shape slot on patch is etched to improve value of Return loss S-11 The S-11 increased from -16 dB to -40dB. The increase in S-11 is -24 dB. Percentage increase in is 150%. The bandwidth of U slot antenna is 178MHz and gain of 4.4dB. MPA is simulated using CST software, with FR-4 substrate of relative permittivity Er is 4.4. The MPA is also simulated with U slot in patch and compared. Results describes that performance of others parameters comparable with increase in S-11 value.