Title :
Electrically small uniplanar antenna with pattern-agile performance
Author :
Ming-Chun Tang ; Ting Shi ; Ziolkowski, Richard
Author_Institution :
Coll. of Commun. Eng., Chongqing Univ., Chongqing, China
Abstract :
A novel electrically small uniplanar antenna with pattern-agile performance is reported. It consists of a split semi-loop connected to the ground strips of a coplanar waveguide-fed semi-loop antenna. The angle of its maximum directivity can be controlled simply by changing the position of the gap in the ground-connected semi-loop. The measured results of this behaviour are in good agreement with the simulated values. A peak realised gain of 1.93 dBi is achieved experimentally. The radiation efficiency is observed to be higher than 95% for every angle selected.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; coplanar waveguides; loop antennas; coplanar waveguide-fed semi loop antenna; electrically small uniplanar antenna; gain 1.93 dB; ground strips; ground-connected semi loop; maximum directivity angle control; pattern-agile performance; peak realised gain; radiation efficiency; split semi loop;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.1663
