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International Journal of Antennas and Propagation
Volume 2016, Article ID 3032684, 7 pages
http://dx.doi.org/10.1155/2016/3032684
Research Article

Millimeter Wave Fabry-Perot Resonator Antenna Fed by CPW with High Gain and Broadband

School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China

Received 27 January 2016; Revised 4 April 2016; Accepted 20 April 2016

Academic Editor: Shah N. Burokur

Copyright © 2016 Xue-Xia Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel millimeter wave coplanar waveguide (CPW) fed Fabry-Perot (F-P) antenna with high gain, broad bandwidth, and low profile is reported. The partially reflective surface (PRS) and the ground form the F-P resonator cavity, which is filled with the same dielectric substrate. A dual rhombic slot loop on the ground acts as the primary feeding antenna, which is fed by the CPW and has broad bandwidth. In order to improve the antenna gain, metal vias are inserted surrounding the F-P cavity. A CPW-to-microstrip transition is designed to measure the performances of the antenna and extend the applications. The measured impedance bandwidth of less than −10 dB is from 34 to 37.7 GHz (10.5%), and the gain is 15.4 dBi at the center frequency of 35 GHz with a 3 dB gain bandwidth of 7.1%. This performance of the antenna shows a tradeoff among gain, bandwidth, and profile.