Dual-band circularly polarized dielectric resonator antenna for wireless applications

Abstract

This letter investigates an integrated antenna configuration for WLAN/WiMAX applications. The proposed composite antenna configuration is simply the grouping of ring dielectric resonator along with reformed square‐shaped slot antenna. Three significant characteristics of proposed article are: (1) aperture act as magnetic dipole and excite HE11δ mode in ring dielectric resonator antenna; (2) reforming of square aperture generates orthogonal modes in ring DRA and creates CP in lower frequency band; (3) annular‐shaped Microstrip line along with reformed square aperture creates CP wave in upper frequency band. With the purpose of certifying the simulated outcomes, prototype of proposed structure is fabricated and tested. Good settlement is to be got between experimental and software generated outcome. Experimental outcomes show that the proposed radiating structure is operating over 2 frequency bands that is, 2.88‐3.72 and 5.4‐5.95 GHz. Measured 3‐dB axial ratio bandwidth in lower and upper frequency band is approximately 9.52% (3.0‐3.4 GHz) and 5.85% (5.64‐5.98 GHz), respectively. These outcomes indicate that the proposed composite antenna structure is appropriate for WLAN and WiMAX applications.

Wide Dual-Band Circularly Polarized Diecletric Resonator: Innovative Integration of a Single Hybrid Feed and Thin Grounded Metasurface

“…In comparison to [ 3 , 17 , 18 ], the proposed antenna excels in terms of compactness, offering a smaller profile while exhibiting a broader impedance bandwidth, wider AR bandwidth, and higher gain in both the lower and upper frequency bands. Although the designs presented in [ 15 , 16 , 19 ] have slightly lower profiles, the proposed antenna demonstrates superior radiation characteristics in terms of the compared performance parameters.…”

“…Multi-band antennas provide benefits in communication systems by assigning uplink and downlink channels to different frequency bands, thus reducing inter-channel interference. Moreover, adopting a single multi-band antenna leads to reduced overall system dimensions and cost [ 9 , 13 ], making CP DRAs with dual-band operation an area of considerable research interest [ 3 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. To achieve wide dual-band CP operation, simultaneous excitation of the slot mode and DRA has been employed [ 19 , 20 , 21 ].…”

Circular Defected Ground Microstrip Band-Reject Filter Design for Radar Communication

“…Adaptive neuro-fuzzy inference system can also be applied for designing of dual band bandstop microstrip defected ground structure filters so that the physical dimensions of filters is obtained with high accuracy in less time [11]. Latest research work is highly focused on designing of different microstrip antennas and filters using DGS and DRA [7][8][9][10][11][12][13].…”

Design of a compact dense dielectric patch antenna based on half‐cut technique

“…Although DRAs receive attention originally for millimeter‐wave applications, they are also extensively investigated at microwave frequency. It is because DRAs have several superior characteristics such as more degrees of design freedom, small size, light weight, and ease of excitation …”

“…It is because DRAs have several superior characteristics such as more degrees of design freedom, small size, light weight, and ease of excitation. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Due to the miniaturization of communication system, the demand for small antennas has increased. In order to meet this requirement, various designs of the compact DRA have been proposed.…”