Title :
Compact Wideband Unidirectional Antenna With a Reflector Connected to the Ground Using a Stub
Author :
Zhang, Guang-Min ; Hong, Jin-Song ; Wang, Bing-Zhong ; Song, Gangbing ; Zhang, Peng
Author_Institution :
Inst. of Appl. Phys., Univ. of Elec tronic Sci. & Technol. of China, Chengdu, China
fDate :
7/3/1905 12:00:00 AM
Abstract :
A compact wideband unidirectional antenna with a reflector connected to the ground using a stub is proposed in this letter. The proposed antenna consists of a pair of stepped-structure patches and a coplanar waveguide feeding line. One stepped-structure patch is used as a monopole radiator, while the other operates as a reflector. As discussed, when the connection area between the reflector and the ground is small, the antenna can provide unidirectional radiation patterns over the operating frequency band ranging from 3.82 to 5.63 GHz for return loss greater than 10 dB. In this investigation, the optimized size of the proposed antenna is 20 × 20 mm2, which is much smaller than most of the current wideband unidirectional antennas. Experimental and simulated results are shown and discussed for practical applications.
Keywords :
broadband antennas; coplanar transmission lines; coplanar waveguides; directive antennas; microstrip antennas; microwave antennas; monopole antennas; reflector antennas; compact wideband unidirectional antenna; coplanar waveguide feeding line; frequency 3.82 GHz to 5.63 GHz; monopole radiator; reflector antenna; stepped-structure patches; Antenna measurements; Antenna radiation patterns; Broadband antennas; Connectors; Reflector antennas; Wideband; Icompact; reflector; unidirectional; wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2172970