Title :
Bandwidth enhancement of helix excited cylindrical dielectric resonator antennas by means of stacking
Author :
Motevasselian, Alireza
Author_Institution :
Electromagn. Eng. Lab., KTH - R. Inst. of Technol., Stockholm, Sweden
Abstract :
Stacking method is used to enhance the 3 dB axial ratio and impedance bandwidth of the circularly polarized cylindrical dielectric resonator antennas excited by an external tape helix. In this method, a dielectric cylinder with lower permittivity than the basement cylindrical dielectric resonator is placed concentrically on top of the basement cylinder. The new configuration offers an axial ratio bandwidth up to 11% and impedance bandwidth of 31%.
Keywords :
dielectric resonator antennas; electromagnetic wave polarisation; axial ratio bandwidth; basement cylinder; circularly polarized cylindrical dielectric resonator antenna; external tape helix; gain 3 dB; helix excited cylindrical dielectric resonator antenna; impedance bandwidth enhancement; stacking method; Bandwidth; Dielectric resonator antennas; Dielectrics; Helical antennas; Optical resonators; Stacking; Dielectric resonator antenna; circular polarization; cylindrical; helix; stack;
Conference_Titel :
Antennas and Propagation Conference (LAPC), 2012 Loughborough
Conference_Location :
Loughborough
Print_ISBN :
978-1-4673-2218-8
Electronic_ISBN :
978-1-4673-2219-5
DOI :
10.1109/LAPC.2012.6403042
