Title :
Effects of permittivity on bandwidth and radiation patterns of cylindrical dielectric resonator antennas
Author :
Huynh, Adam P. ; Long, Stuart A. ; Jackson, David R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Houston, Houston, TX, USA
Abstract :
An investigation is made into the effects of permittivity on the bandwidth and radiation patterns of a probe-fed cylindrical dielectric resonator antenna (DRA). It is seen that a 50 Ω impedance match can be achieved until the relative permittivity of the material is dropped below about 5. The impedance bandwidth is maximized for a relative permittivity that is small but greater than unity. However, the radiation patterns are degraded as the permittivity decreases.
Keywords :
antenna feeds; antenna radiation patterns; dielectric resonator antennas; impedance matching; permittivity; antenna radiation patterns; bandwidth; impedance bandwidth; impedance matching; permittivity effect; probe-fed cylindrical dielectric resonator antenna; relative permittivity; resistance 50 ohm; Antenna radiation patterns; Bandwidth; Dielectric resonator antennas; Dielectrics; Impedance; Permittivity; Probes;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5562338
