Abstrait

Designing of Hybrid Semi-Circle Coupled Slot Loaded Rectangular Microstrip Antennas for Wireless Applications

Rajeshwari Biradar, Boya Satyanarayana, Dr. S. N. Mulgi

In this paper a design of hybrid semi-circle coupled slot loaded rectangular microstrip antennas are presented for multiband operation. The proposed antennas are consisting a novel geometry of semi-circle radiating patch which is superimposed on conventional rectangular microstrip antenna (CRMSA) to form a hybrid model. The proposed antennas are excited through a simple 50-Ω microstripline feed using quarter wave impedance matching transformer. These antennas are operates between the frequencies from 1.87 to 6.50 GHz at different frequency bands and gives a highest virtual size reduction of 34.14% with broadside radiation characteristics. These antennas are useful for the applications such as WLAN, WiMax and Bluetooth. The important antenna parameters such as bandwidth, return loss, gain and radiation pattern are discussed and presented.