Title :
A Wideband Circularly Polarized Rectangular Dielectric Resonator Antenna Excited by an Archimedean Spiral Slot
Author :
Meng Zou ; Jin Pan ; Zaiping Nie
Author_Institution :
Dept. of Microwave Eng., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
A wideband circularly polarized (CP) rectangular dielectric resonator antenna (DRA) is presented. An Archimedean spiral slot is used to excite the rectangular DRA for wideband CP radiation. The operating principle of the proposed antenna is based on using a broadband feeding structure to excite the DRA. A prototype of the proposed antenna is designed, fabricated, and measured. Good agreement between the simulated and measured results is attained, and a wide 3-dB axial-ratio (AR) bandwidth of 25.5% is achieved.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; dielectric resonator antennas; electromagnetic wave polarisation; slot antennas; spiral antennas; AR bandwidth; Archimedean spiral slot; DRA; broadband feeding structure; wide 3-dB axial-ratio bandwidth; wideband CP radiation; wideband circularly polarized rectangular dielectric resonator antenna; Antenna measurements; Broadband antennas; Dielectric resonator antennas; Dielectrics; Spirals; Wideband; Archimedean spiral slot; circular polarization (CP); dielectric resonator antenna (DRA); wideband antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2364296
