Title :
FDTD analysis of input characteristic of monopole antenna covered with cylindrical radome
Author :
Jiang, H. ; Arai, H. ; Ebine, Y.
Author_Institution :
Fac. of Eng., Yokohama Nat. Univ., Japan
Abstract :
In the IMT-2000 system, because the frequency band is around 2 GHz, it is necessary to account for the effect of the dielectric radome in the antenna´s design. The far field radiation pattern of an antenna with a dielectric radome also will change from the case of the element only. It is necessary to investigate the change of the antenna´s input characteristics and radiation patterns due to a cylindrical radome. We investigated input characteristic of a /spl lambda//4 monopole antenna due to the parameters (radius, thickness, permittivity constant) of a dielectric cylindrical radome. We also examined the central frequency and bandwidth ratio due to offset value of element from the center of the cylindrical radome.
Keywords :
UHF antennas; antenna radiation patterns; finite difference time-domain analysis; land mobile radio; monopole antennas; permittivity; radomes; 2 GHz; FDTD analysis; IMT-2000 system; UHF; antenna design; bandwidth ratio; central frequency; dielectric cylindrical radome; dielectric radome; far field radiation pattern; frequency band; input characteristic; input characteristics; input impedance; monopole antenna; permittivity constant; radiation patterns; radius; thickness; Antenna radiation patterns; Bandwidth; Base stations; Dielectrics; Finite difference methods; Frequency; Loaded antennas; Mobile antennas; Mobile communication; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.874485
