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Your search keyword '"Dielectric resonator antennas"' showing total 2 results
Start Over Descriptor "Dielectric resonator antennas" Publication Type Reviews
2 results on '"Dielectric resonator antennas"'

1. High isolation circularly polarized in-band full-duplex anisotropic dielectric resonator antenna.

Author

Abedian, Mohammad, Khalily, Mohsen, Wang, Fan, Xiao, Pei, Tafazolli, Rahim, and Kishk, Ahmed A.

Subjects
*DIELECTRIC resonator antennas, *DIELECTRIC resonators, *PERMITTIVITY, *ANTENNAS (Electronics), *RESONATORS
Abstract

A novel high-isolation, monostatic, circularly polarized (CP) simultaneous transmit and receive (STAR) anisotropic dielectric resonator antenna (DRA) is presented. The Proposed antenna is composed of two identical but orthogonally positioned annular sectoral anisotropic dielectric resonators. Each circularly polarized (CP) resonator consists of alternating stacked dielectric layers of relative permittivities of 2 and 15 and is excited by a coaxial probe from the two opposite ends to have left and right-hand CP. Proper element spacing and a square absorber are placed between the resonators to maximize Tx/Rx isolation. Such a structure provides an in-band full-duplex (IBFD) CP-DRA system. Measurement results exhibit high Tx/Rx isolation better than 50 dB over the desired operating bandwidth (5.87–5.97 GHz) with a peak gain of 5.49 and 5.08 dBic for Ports 1 and 2, respectively. [ABSTRACT FROM AUTHOR]

Published
2023
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2. A comprehensive survey on ‘circular polarized antennas’ for existing and emerging wireless communication technologies.

Author

Nadeem, Iram, Alibakhshikenari, Mohammad, Babaeian, Fatemeh, Althuwayb, Ayman A, Virdee, Bal S, Azpilicueta, Leyre, Khan, Salahuddin, Huynen, Isabelle, Falcone, Francisco, Denidni, Tayeb A, and Limiti, Ernesto

Subjects
*TELECOMMUNICATION, *DIELECTRIC resonator antennas, *WIRELESS communications, *WAVEGUIDE antennas, *COMMUNICATION of technical information, *MILLIMETER waves
Abstract

Circular polarized (CP) antennas are well suited for long-distance transmission attainment. In order to be adaptable for beyond 5G communication, a detailed and systematic investigation of their important conventional features is required for expected enhancements. The existing designs employing millimeter wave, microwave, and ultra-wideband (UWB) frequencies form the elementary platform for future studies. The 3.4â€"3.8 GHz frequency band has been identified as a worthy candidate for 5G communications because of spectrum availability. This band comes under UWB frequencies (3.1â€"10.6 GHz). In this survey, a review of CP antennas in the selected areas to improve the understanding of early-stage researchers specially experienced antenna designers has presented for the first time as best of our knowledge. Design implementations involving size, axial ratio, efficiency, and gain improvements are covered in detail. Besides that, various design approaches to realize CP antennas including (a) printed CP antennas based on parasitic or slotted elements, (b) dielectric resonator CP antennas, (c) reconfigurable CP antennas, (d) substrate integrated waveguide CP antennas, (e) fractal CP antennas, (f) hybrid techniques CP antennas, and (g) 3D printing CP antennas with single and multiple feeding structures have investigated and analyzed. The aim of this work is to provide necessary guidance for the selection of CP antenna geometries in terms of the required dimensions, available bandwidth, gain, and useful materials for the integration and realization in future communication systems. [ABSTRACT FROM AUTHOR]

Published
2021
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