Title :
CPW feed circularly polarised microstrip antenna using asymmetric coupling slot
Author :
Huang, Chih-Yu ; Ling, Ching-Wei
Abstract :
Design of a coplanar waveguide (CPW) feed square microstrip antenna with circular polarisation (CP) radiation is described. This CP design is achieved by using an asymmetric inductively coupling slot in the ground plane of the CPW feed line. Results show that the proposed antenna can have a CP bandwidth of 2.4%, whereas a simple inclined coupling slot case has 1.6% CP bandwidth at a fixed square patch size. Typical experimental results are presented and discussed
Keywords :
antenna feeds <CPW feed circ. polarised microstrip antenna, asymmetric coupling slot>; antenna radiation patterns <CPW feed circ. polarised microstrip antenna, asymmetric coupling slot>; coplanar waveguides <feed circ. polarised microstrip antenna, asymmetric coupling slot>; microstrip antennas <CPW feed circ. polarised microstrip antenna, asymmetric coupling slot>; Smith chart; asymmetric coupling slot; circularly polarised microstrip antenna; coplanar waveguide feed; fixed square patch size; ground plane; inductively coupling slot; nonlinear coupling slot; open-circulated stub length; radiation patterns; square microstrip antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20031079
