Star Shaped Broadband Printed Antenna With U-Shape Ground Plane

In this paper, the star-shaped printed antenna with a partial ground plane is reported, which is excited by a microstrip feed technique. The proposed antenna geometry is designed by incorporating two equilateral triangle patches. The proposed antenna operates over frequencies from 6.5 to 10.6 GHz with 48% impedance bandwidth (S
11
< -10 dB) and a suitable peak gain of about 5 dBi. The performance of the antenna is analyzed in terms of bandwidth, gain, and radiation pattern. The proposed antenna is suitable for as a UWB sensor in C and X-band applications and also suitable for Cognitive Radio applications.