Title :
Cross-Slot-Coupled Wide Dual-Band Circularly Polarized Rectangular Dielectric Resonator Antenna
Author :
Meng Zhang ; Bin Li ; Xin Lv
Author_Institution :
Beijing Key Lab. of Millimeter Wave & Terahertz Technol., Beijing Inst. of Technol., Beijing, China
Abstract :
A cross-slot-coupled wide dual-band circularly polarized (CP) rectangular dielectric resonator antenna (DRA) is investigated. The DRA has a large aspect ratio of 3.2:1. By using a cross-slot of unequal slot arms, three sets of degenerate orthogonal modes of TE111, TE121, and TE131 can be excited simultaneously to generate dual-band CP fields. It is found that the lower band is composed of the TE111 and TE121 modes, while the upper band is formed by the TE131 mode. The 3-dB axial-ratio (AR) bandwidths are 19.8% and 6.2% for the lower and upper bands, respectively. To verify the simulation, measurement was carried out and reasonable agreement was obtained.
Keywords :
broadband antennas; dielectric resonator antennas; electromagnetic wave polarisation; multifrequency antennas; slot antennas; AR bandwidths; CP resonator antenna; DRA; axial ratio bandwidths; circularly polarized resonator antenna; cross slot coupled resonator antenna; rectangular dielectric resonator antenna; wide dual band resonator antenna; Antenna measurements; Bandwidth; Dielectric resonator antennas; Dielectrics; Dual band; Frequency measurement; Circular polarization; dielectric resonator antenna; dual-band; single-feed; wideband;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2310241
