Title :
Design of Small Circularly Polarized Patch Antenna
Author :
Tang, Xihui ; Lau, Ka-Leung ; Xue, Quan ; Long, Yunliang
Author_Institution :
Shenzhen Res. Inst., City Univ. of Hong Kong, Shenzhen, China
fDate :
7/2/1905 12:00:00 AM
Abstract :
A new method to reduce the lateral size of the circularly polarized (CP) patch antenna is presented. It is implemented by attaching two sets of vertical right-angle bended stubs to the diagonal corners of the slotted square patch. To demonstrate the effectiveness of this method, three antennas with different lengths of bended stubs are designed and tested. The smallest one has a size reduction of 77.7% in comparison to the conventional half-wave circularly polarized patch antenna. It has impedance bandwidth (VSWR ≤ 2) of 7.9%, axial ratio (AR) bandwidth (AR ≤ 3 dB) of 1.53% and peak gain of 4.7 dBic.
Keywords :
electromagnetic wave polarisation; microstrip antennas; CP patch antenna; half-wave circularly polarized patch antenna; vertical right-angle bended stubs; Circular polarization; patch antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2060182
