Efficient technique for the analysis of coaxial probe-coupled hemispherical dielectric resonator antenna

2010 ◽  
Vol 52 (7) ◽  
pp. 1588-1591 ◽  
Author(s):  
Anandrao B. Kakade ◽  
B. Ghosh
Keyword(s):  
Dielectric Resonator ◽  
Efficient Technique ◽  
Dielectric Resonator Antenna ◽  
Coaxial Probe

Effect of an air gap around the coaxial probe exciting a cylindrical dielectric resonator antenna

1994 ◽  
Vol 30 (3) ◽  
pp. 177-178 ◽  
Author(s):  
G.P. Junker ◽  
A.A. Kishk ◽  
A.W. Glisson ◽  
D. Kajfez
Keyword(s):  
Dielectric Resonator ◽  
Air Gap ◽  
Dielectric Resonator Antenna ◽  
Coaxial Probe

scholarly journals Novel Wideband Circularly Polarized DRA With Squint-free Radiation Characteristics

2020 ◽  
Author(s):  
Mohammad Abedian ◽  
Mohsen Khalily ◽  
Vikrant Singh ◽  
Pei Xiao ◽  
Rahim Tafazolli ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Vertical Section ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Radiation Characteristics ◽  
Horizontal Section ◽  
Circularly Polarized ◽  
Metal Element ◽  
Coaxial Probe

Abstract A new single-fed circularly polarized dielectric resonator antenna (CP-DRA) without beam squint is presented. The DRA comprises of an S-shaped dielectric resonator (SDR) with a metalized edge and two rectangular dielectric resonator (RDRs) blocks. A horizontal-section is applied as an extension of the SDR, and a vertical-section is placed in parallel to the metallic edge. A vertical coaxial probe is used to excite the SDR and the vertical RDR blocks through an S-shaped metal element and a small rectangular metal strip, respectively. The two added RDRs that form an L-shaped DR improve the radiation characteristics and compensate for the beam squint errors. A wideband CP performance is achieved due to the excitation of several orthogonal modes such as TEx d11, TEy 1d1, TEz 121, TEy 112, TEx 131, and TEy 311. The experimental results demonstrate an impedance bandwidth of approximately 66:8% (3:71-7:45 GHz) and a 3-dB axial-ratio (AR) bandwidth of about 54:8% (3:72-6:53 GHz) with a stable broadside beam achieving a measured peak gain of about 4:64dBi. Furthermore, a 100% correction in beam squint value from q = 41° to q = 0° with respect to the antenna boresight is achieved.

Miniature Dual Band Button Antenna Using Cylindrical Dielectric Resonator

2021 ◽  
Vol 36 (4) ◽  
pp. 479-485
Author(s):  
Mohammed Banafaa ◽  
Mohmed Jamaluddin ◽  
Samsul Dahlan ◽  
Ayman Althuwayb
Keyword(s):  
Dielectric Resonator ◽  
Ground Plane ◽  
Wireless Body Area Network ◽  
Dual Band ◽  
Area Network ◽  
Dielectric Resonator Antenna ◽  
Promising Candidate ◽  
Compact Size ◽  
Communication Devices ◽  
Coaxial Probe

This paper presents miniature dual-band cylindrical dielectric resonator antenna (CDRA) based on button antenna for wireless body area network (WBAN) applications. A button antenna is designed by stacking two CDRAs (low and high permittivity) fed by coaxial probe through the ground plane and penetrates the bottom CDRA. The prime contributions of using DRAs are to enhance the performance and to provide a compact size of antenna. However, the coaxial probe realizes two radiation patterns, monopole and broadside patterns. A comprehensive validation using CST microwave studio is carried out to determine the characteristics of the proposed button antenna. In addition, to ensure that the results are acceptable to the practitioner in this field, a prototype was fabricated and tested. The superiority of the proposed antenna is confirmed by possessing 39% more compact size compared to previously reported studies, efficiency of more than 63% and bandwidth of 4.9% and 6.6% for lower and upper band, respectively. This proposed design is a promising candidate to benefit on/off body communication devices operating at 2.4 and 5.6 GHz.

Experimental and Simulation Investigation of Tri-Sector Cylindrical Dielectric Resonator Antenna in composite forms for Wireless Applications

Frequenz ◽  
2016 ◽  
Vol 70 (11-12) ◽  
Author(s):  
Pinku Ranjan ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
Near Field ◽  
Ground Plane ◽  
Simulation Software ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Wireless Applications ◽  
Center Position ◽  
Segmentation Approach ◽  
Coaxial Probe

AbstractIn this article, a tri-sector cylindrical dielectric resonator antenna (t-CDRA) has been introduced by splitting CDRA into three uniform sectors and all three uniform sectors are packed together in a compact way on a metallic ground plane. A coaxial probe feed is used to excite the proposed composite t-CDRA at the center position. Multi-segmentation approach has been applied for further improvement in bandwidth of proposed t-CDRA. The proposed composite t-CDRA has been designed using HFSS simulation software and analyzed using theoretical analysis. The prototype of t-CDRA, three elements t-CDRA and three elements dual segment t-CDRA has been fabricated for measurement. The input characteristics, near field, far field distribution of the proposed t-CDRAs have been studied through HFSS simulation software and their results are compared with corresponding experimental results. Proposed segmented t-CDRA has wide impedance bandwidth (|S

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