A Broadband Unidirectional Antenna Based on Closely Spaced Loading Method

Jiangniu Wu, Zhiqin Zhao, Zaiping Nie, Qing Huo Liu
2013 IEEE Transactions on Antennas and Propagation  
In this paper a broadband unidirectional planar microstrip antenna is presented. The proposed geometry consists of rectangular loop having two gaps and metallic strips. Although, the rectangular loop in the geometry introduces a good directionality but offers a narrow bandwidth. This problem is addressed by placing the metallic strips which induce a new resonant frequency results in the improvement of impedance bandwidth. The geometry was optimized using Ansoft's HFSS which is commercially
more » ... s commercially available electromagnetic (EM) software, and tested practically to validate the simulation results. The measured results indicate 66.57% impedance bandwidth with good gain across the band. Measured results fairly agree with the simulated data.
doi:10.1109/tap.2012.2216492 fatcat:tx67iruxkjdnlg77kdmhr5mkum