Investigation of a Cross-Slot-Coupled Dual-Band Circularly Polarized Hybrid Dielectric Resonator Antenna

Abstract

Abstract-In this paper, a cross-slot-coupled dual-band circularly polarized (CP) hybrid dielectric resonator antenna (DRA) is presented. The design concept is based on using a cross-slot as both a feeding structure of the DRA and an effective radiator. Full wave simulation is used to verify the proposed design concept in this paper. A prototype antenna is designed, fabricated, and measured. Good agreement is obtained between the simulated and measured results.

Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna

“…Finally, a performance comparison of the proposed DRA with earlier works [ 12 , 13 , 14 , 15 , 17 , 18 , 19 ] is presented in Table 1 . These structures are compared in terms of −10 dB IBWs, 3 dB ARBWs, and size.…”

“…It should be noted that the represents the wavelength with respect to the center frequency of the lower CP band. The earlier works [ 12 , 13 , 14 , 15 , 17 , 18 ] are some of the examples of dual-band CP DRAs. It is concluded from the comparison that the proposed DRA has a wider 3 dB ARBW at the second band from [ 12 ], wider −10 dB IBWs and 3 dB ARBWs from [ 13 , 15 , 17 , 18 ] along with the compact height from [ 13 , 18 ].…”

“…One such technique involves the separate excitation of fundamental and higher modes of the DR [ 12 , 13 , 14 , 15 , 16 ]. The other includes the use of hybrid configuration where modes of the DR and coupling slot are separately excited [ 17 , 18 ]. For instance, a dual-band CP hybrid antenna is proposed where the lower CP band is produced by the DRA and upper band by the cross-slot [ 17 ].…”

“…The other includes the use of hybrid configuration where modes of the DR and coupling slot are separately excited [ 17 , 18 ]. For instance, a dual-band CP hybrid antenna is proposed where the lower CP band is produced by the DRA and upper band by the cross-slot [ 17 ]. However in the aforementioned designs, the lower CP band is dependent on the TE mode of the DR, therefore, the size of the antenna would be increased to operate at lower frequencies for a given value of dielectric constant.…”

A Simple Dual-Band Circularly Polarized Rectangular Dielectric Resonator Antenna

“…Because two corners of the DR are truncated and a diagonal groove at the top face of the DR is introduced. A dual-band CP DRA can also be achieved by taking advantages of the resonances of dielectric resonator (DR) and feeding structure [24]. However, as described in [25], making use of the radiation of feeding structure to obtain a dual-band antenna may do harm to the DRA matching.…”