Wideband Rectangular Microstrip Antenna With Directly Coupled and Two Gap Coupled Parasitic Patches
In this paper, the conventional microstrip antenna is replaced by a configuration which consists of a rectangular microstrip antenna with a directly coupled patch and two gap coupled parasitic patches to achieve a wide bandwidth. The impedance BW determined is 15.8 % of the center frequency at 4.12 GHz. The microstrip antenna is fed by a coaxial cable to achieve linear polarization. The proposed geometry provides a band of 640 MHz (3.8 GHz to 4.44 GHz) that is suitable for certain frequencies of S band as well as of C band applications.