Results 31 to 40 of about 14,945 (257)

Antenna for Ultra-Wideband Applications With Non-Uniform Defected Ground Plane and Offset Aperture-Coupled Cylindrical Dielectric Resonators

IEEE Access, 2019
A new compact Cylindrical Dielectric Resonator Antenna (CDRA) with a defected ground for ultra-wideband applications is presented. The structure is based on two cylindrical dielectric resonators asymmetrically located with respect to the center of an ...
Chemseddine Zebiri, Djamel Sayad, Issa T. E. Elfergani, Jamal Sulieman Kosha, Widad Faraj A. Mshwat, Chan Hwang See, Mohamed Lashab, Jonathan Rodriguez, Khalil H. Sayidmarie, Huthaifa A. Obeidat, Raed A. Abd-Alhameed   +10 more
doaj   +1 more source

Wideband Cylindrical Dielectric Resonator Antenna Operating in HEM11δ Mode with Improved Gain: A Study of Superstrate and Reflector Plane

International Journal of Antennas and Propagation, 2017
A wideband and high gain dielectric resonator antenna (DRA) operating in hybrid HEM11δ mode is proposed. The investigated geometry employs one cylindrical dielectric resonator partially covered with a transparent dielectric superstrate and backed up by a
Sounik Kiran Kumar Dash, Taimoor Khan, Binod Kumar Kanaujia, N. Nasimuddin   +3 more
doaj   +1 more source

A systematic approach towards realization of transmission zeros in TE01δ mode dielectric resonator filters with all iris couplings

IET Microwaves, Antennas & Propagation, 2022
This paper presents a novel method using a coupling matrix to realize dielectric resonator filters with Transmission Zeros (TZs). This method eliminates the necessity of capacitive coupling in conventional DR filter designs with TZs.
Majid Hami Golzar, Ali Kheirdoost, Maysam Haghparast, Behzad Ahmadi   +3 more
doaj   +1 more source

Experimental Test of a Two-dimensional Approximation for Dielectric Microcavities

, 2009
Open dielectric resonators of different shapes are widely used for the manufacture of microlasers. A precise determination of their resonance frequencies and widths is crucial for their design. Most microlasers have a flat cylindrical geometry, and a two-
A. Richter, A. Richter, B. Dietz, C. Vassallo, F. Schäfer, H. C. Casey, H.-J. Stöckmann, J. D. Jackson, J. U. Nöckel, M. Janezic, M. Miski-Oglu, P. Oria Iriarte, S. Bittner   +12 more
core   +1 more source

T‐shaped dielectric resonator antenna with a high antenna gain

Electronics Letters, 2023
This Letter proposes a T‐shaped dielectric resonator (DR) antenna (DRA) to achieve a high antenna gain. The proposed antenna comprises a cylindrical DR top‐loaded by a cylindrical DR disk, forming a T‐shaped DRA that can be fabricated in one go.
Li Ying Feng, Kwok Wa Leung
doaj   +1 more source

Gaseous density calculation by means of relative permittivity measurement

Measurement: Sensors, 2021
This study presents a gaseous density calculation method on the basis of relative permittivity measurement. The relative permittivity of a gas sample is measured by using a cylindrical microwave cavity resonator in wide temperature and pressure ranges ...
Yuya Kano, Naoki Kuramoto
doaj   +1 more source

The Effect of Random Surface Inhomogeneities on Microresonator Spectral Properties: Theory and Modeling at Millimeter Wave Range

, 2008
The influence of random surface inhomogeneities on spectral properties of open microresonators is studied both theoretically and experimentally. To solve the equations governing the dynamics of electromagnetic fields the method of eigen-mode separation ...
A. G. Voronovich, A. N. Kolmogorov, E. M. Ganapolskii, F. G. Bass, J. A. Ogilvy, J. R. Taylor, L. A. Vainshtein, Lord Rayleigh, R. Newton, T. Kato, Yu. V. Tarasov, Z. E. Eremenko   +11 more
core   +1 more source

High gain circularly polarized graphene inspired dielectric resonator antenna for 6G IOT THz optical communication and optical refractive index Biosensing applications

Engineering Science and Technology, an International Journal
In this article a high gain (≈13dBi) circularly polarized dielectric resonator antenna (DRA) has been designed with silicon and graphene based nano materials for 6G terahertz (THz) nano communication and bio sensing applications. This antenna having 2.2 %
Shipra Srivastava, Saptarshi Gupta, Vibhav Kumar Sachan, Gaurav Saxena, Satya Sai Srikant   +4 more
doaj   +1 more source

Dielectric Resonator Metasurface for Dispersion Engineering

, 2016
We introduce a practical dielectric metasurface design for microwave frequencies. The metasurface is made of an array of dielectric resonators held together by dielectric connections thus avoiding the need of a mechanical support in the form of a ...
Achouri, Karim, Caloz, Christophe, Gupta, Shulabh, Rmili, Hatem, Yahyaoui, Ali   +4 more
core   +1 more source

Theoretical Investigation of Phonon Polaritons in SiC Micropillar Resonators [PDF]

, 2016
Of late there has been a surge of interest in localised phonon polariton resonators which allow for sub-diffraction confinement of light in the mid-infrared spectral region by coupling to optical phonons at the surface of polar dielectrics.
De Liberato, Simone, Gubbin, Christopher R., Maier, Stefan A.   +2 more
core   +2 more sources