hemispherical dielectric resonator antennas
A Novel Half Hemispherical Dielectric Resonator Antenna with Array of Slots for Wideband Applications
... reconfigurable Hemispherical Dielectric Resonator Antennas and their linear phased arrays have also been studied [16], which show the capability of configuring the beam in four ...
15
Mutual Coupling Between a Pair of Identical Beam Steering Dielectric Resonator Antennas
... between dielectric resonator antenna (DRAs) have been studied in the past by some researchers ...two hemispherical DRAs (H-DRAs) has been analyzed theoretically in [7] by Luk et ...between ...
22
Performance Enhancement of Hemispherical Dielectric Resonator Antenna by Using Artificial Materials
... Dielectric resonator antennas (DRAs) offer various advantages over microstrip antennas and these can be considered as impeccable contenders for antenna ...of dielectric resonator ...
5
Designing of High Gain Hemispherical Dielectric Resonator Antenna with Electromagnetic Band-Gap Structure
... Fig. 5 shows the simulated gain as a function of frequency for the two antennas, with and without EBG structure. The EBG structure allows us to increase the gainof the antenna around the operating frequency. For ...
6
Dual-Sense Dual-Polarized Hybrid Rectangular Dielectric Resonator Antenna for Multiband Applications
... of antennas: microstrip antenna and dielectric resonator ...drawback, dielectric resonator antenna comes into the picture with high gain and high radiation ...in dielectric ...
10
Stacked Conical-Cylindrical Hybrid Dielectric Resonator Antenna for Improved Ultrawide Bandwidth
... basic dielectric resonator antennas (DRAs) are reported in the literature such as hemispherical, cylindrical, and rectangular DRAs ...DR antennas is the narrow ...
8
Design and Development of Microstrip Patch fed Dielectric Resonator Antennas for 8 -16 GHz frequency
... Dielectric resonator (DR) is a ceramic puck characterised by a definite volume, shape, high dielectric constant and low ...rectangle, hemispherical, triangular, ring ...
7
Wideband Circularly Polarized Dielectric Resonator Antenna with a Square Spiral Microstrip Feedline
... and the two orthogonal line currents will generate two orthogonal radiations. Additionally, as there will be large phase lag when current flows through square spiral microstrip line, there will be LHCP in far field. ...
10
International Journal of Scientific Research and Reviews A Survey on recent techniques to achieve Circular polarization for Wideband Dielectric Resonator antenna
... wherein, dielectric resonator antenna is combined with other antennas such microstrip antenna, monopoles etc in order to achieve enhanced bandwidth performance up to 117 ...individual antennas ...
10
A Survey on recent techniques to achieve Circular polarization for Wideband Dielectric Resonator antenna
... wherein, dielectric resonator antenna is combined with other antennas such microstrip antenna, monopoles etc in order to achieve enhanced bandwidth performance up to 117 ...individual antennas ...
10
A Wideband Trapezoidal Dielectric Resonator Antenna with Circular Polarization
... 1. Wee, F. H., M. F. B. A. Malek, S. Sreekantan, A. U. Al-Amani, F. Ghani, and K. Y. You, “Investigation of the characteristics of Barium Strontium Titanate (BST) dielectric resonator ceramic loaded on ...
10
Two-Layer Sapphire Rectangular Dielectric Resonator Antenna for Rugged Communications
... Dielectric waveguide model has been utilized for finding the resonant frequency and initial dimensions of rectangular dielectric resonator antenna. By the magnetic wall boundary condition and solving ...
8
Bandwidth Enhancement Techniques of Dielectric Resonator Antenna
... The slot and DRA both radiates as a magnetic dipole and preserve the radiation patterns and polarization over the entire bandwidth. The method of fig. 8 combines a slot and DRA resonance and bandwidth of about 25 % has ...
5
Broadband Circularly Polarized Dielectric Resonator Antenna with Annular Slot Excitation
... Abstract—A broadband circularly polarized (CP) cylindrical dielec- tric resonator antenna (DRA) is presented. The DRA is excited by an L-shaped microstrip feed line through the coupling of an annular slot in the ...
13
A hemispherical acoustic resonator for the measurement of the speed of sound in gases.
... The zero frequency speed of sound was calculated using equation (1.1.3) and the various correction terms given by the equations in chapter 3, which include contributions [r] ...
220
Covariance Matrix Adaptation Evolutionary Strategy Optimization of Patch Antenna for Wireless Communication
... In this paper, CMA-ES is used to design a simple, low cost and compact dielectric loaded microstrip antenna for wireless communication systems that cover the WLAN IEEE 802.11a bandwidth. In this work, the antenna ...
7
A Simple Dual-Band Circularly Polarized Rectangular Dielectric Resonator Antenna
... The configuration of the proposed dual-band CP DRA is shown in Figure 1. The DRA is made from a ceramic material with permittivity of ε r . The rectangular DRA, which has dimensions of a × b × c (a = b), is located at the ...
7
Review Paper on Dual Band Dielectric Resonator Antenna for Wireless Application
... Dielectric Resonator Antenna has broad spectrum of dielectric materials to be used for intended ...of Dielectric Resonator ...low-loss dielectric material can be useful for high ...
5
An Artificial Neural Network Approach for the Harmonic Design of Annular Ring Dielectric Resonator Antennas
... This contribution focuses on harmonic tuning of annular DRA operating in C-band. The study has been carried out by exploiting artificial neural networks (ANNs), for the inversion of the formula relating the fundamental ...
11
Development of Polymer-Based Dielectric Resonator Antennas for Millimeter-Wave Applications
... A polymer-based low profile structure with dielectric constant of 4 can result in a bandwidth of 35.2% at 22.1 GHz frequency, as derived from Fig. 1, while these values are 12.8% and 14.1 GHz respectively for a ...
14