Title :
A novel wide beamwidth and circularly polarized microstrip antenna loading annular dielectric superstrate with metal ring
Author :
Tianshuang Tan ; Yulong Xia ; Qi Zhu
Author_Institution :
Dept. of EEIS, Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
The design of a circularly polarized (CP) microstrip antenna with wide beamwidth working at 1.268GHz is proposed. The wide beamwidth is achieved by introducing a substrate larger than the ground and an annular dielectric superstrate with a metal ring. The effects of the substrate, superstrate and ring on radiation pattern and circular polarization are discussed. Simulation results show the proposed antenna simultaneously has wide beamwidth, high low-elevation gain, symmetrical pattern and good CP characteristics. The minimum axial ratio is 0.34dB. 3dB beamwidth and 3dB axial-ratio beamwidth are 169.12° and 165° respectively.
Keywords :
antenna radiation patterns; dielectric materials; microstrip antennas; CP characteristics; CP microstrip antenna; annular dielectric superstrate; axial-ratio beamwidth; circular polarization; circularly polarized microstrip antenna; frequency 1.268 GHz; metal ring; radiation pattern; symmetrical pattern; wide beamwidth; Antenna radiation patterns; Dielectrics; Metals; Microstrip; Microstrip antennas; Substrates;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6905268
