Title :
Coplanar Waveguide Feed to the Hemispherical DRA
Author :
Ghosh, Bratin ; Ghosh, Kunal ; Panda, Chandra Sekhar
Author_Institution :
Dept. of Electron., Electr. & Commun. Eng., Indian Inst. of Technol., Kharagpur
fDate :
5/1/2009 12:00:00 AM
Abstract :
In this communication, several coplanar waveguide topologies to the hemispherical DRA are presented. It is seen that the inductive and the circular-loop CPW feed configurations offer the flexibility to excite the fundamental TE 111 resonant mode of the hemispherical DRA close to the source free resonant frequency, due to the presence of metallization in the coupling region. Dual-band behavior is observed with the capacitive feed due to the DRA and slot resonant modes, which are displaced with respect to the unperturbed modes due to the uninterrupted slot. The radiation characteristics of the antenna are also explained.
Keywords :
antenna feeds; coplanar waveguides; dielectric resonator antennas; coplanar waveguide; dielectric resonator antenna; dual-band behavior; fundamental TE resonant mode; hemispherical DRA; metallization; source free resonant frequency; Coplanar waveguides; Dielectric resonator antennas; Dual band; Feeds; Metallization; Permittivity; Reflection; Resonance; Resonant frequency; Topology; Capacitive; circular-loop; coplanar waveguide (CPW); dielectric resonator; inductive;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2009.2016794
