Stripline aperture coupled metamaterial mushroom antenna with increased front-to-back ratio

The stripline aperture coupling structure is introduced to lower the back radiation of a broadband low-profile metamaterial mushroom antenna. Compared to the feeding structure of a microstrip line aperture coupling, the stripline aperture coupled mushroom antenna exhibits a front-to-back ratio enhancement of 2-14 dB within an operating frequency range of 4.7-6.0 GHz.

[1]  K. Luk,et al.  Experimental and simulation studies of the coaxially fed U-slot rectangular patch antenna , 1997 .

[2]  T. Vaupel,et al.  Radiation efficient unidirectional low-profile slot antenna elements for X-band application , 2005, IEEE Transactions on Antennas and Propagation.

[3]  Y. Chow,et al.  Broadband microstrip patch antenna , 1998 .

[4]  Xianming Qing,et al.  Metamaterial-Based Low-Profile Broadband Mushroom Antenna , 2014, IEEE Transactions on Antennas and Propagation.

[5]  Dan Sun,et al.  A Broadband Impedance Matching Method for Proximity-Coupled Microstrip Antenna , 2010, IEEE Transactions on Antennas and Propagation.

[6]  F. Croq,et al.  Stacked slot-coupled printed antenna , 1991, IEEE Microwave and Guided Wave Letters.

[7]  A. Papiernik,et al.  Wideband aperture coupled microstrip subarray , 1990, International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's.