Title :
Theoretical study of hemispherical helical antenna loaded with dielectric resonator
Author :
Wang, D.X. ; Yung, E.K.N. ; Chen, R.S.
Author_Institution :
City Univ. of Hong Kong, China
Abstract :
The characteristics of the hemispherical helical antenna loaded with dielectric resonator are investigated using surface integral equations based on the EFIE and PMCHW formulations (E-PMCHW), which are solved by the method of moments (MoM). Numerical results for the input impedances and axial ratio on the dielectric constant are presented for demonstrating that the hemispherical helical antenna with dielectric resonator can still produce circular polarization waves over a wide angular coverage. This makes it possible to reduce the size of the helical antenna so that it can meet the needs of practical applications.
Keywords :
antenna radiation patterns; dielectric resonator antennas; dielectric-loaded antennas; electric field integral equations; electric impedance; electromagnetic wave polarisation; helical antennas; method of moments; permittivity; E-PMCHW; EFIE; MoM; axial ratio; circular polarization waves; dielectric constant; dielectric resonator loaded antenna; hemispherical helical antenna; input impedances; method of moments; reduced size; surface integral equations; Antenna theory; Dielectric constant; Dielectric resonator antennas; Helical antennas; Integral equations; Loaded antennas; Moment methods; Permittivity; Polarization; Surface impedance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552056
