Results 11 to 20 of about 367,156 (268)

Dielectric resonator bandstop filters [PDF]

open access: yes, 2011
Dielectric resonators have been widely employed in wireless and satellite communication systems due to their inherently large Q allowing them to fashion low loss and narrow bandwidth filters.
Chan, Richard Kayip
core   +6 more sources

Dielectric resonators and filters for cellular base-stations [PDF]

open access: yes, 2003
The investigation into three types of dielectric resonators for use in base-station filtering applications is presented. The triple-mode cubic TE016 resonator is shown to have good performance for high Q applications.
Walker, Vanessa Evelyne Guillemette
core   +6 more sources

Bandwidth Improvement of a Cone-Inverted Cylindrical and Cross Hybrids Dielectric Resonator Antennas

open access: yesIraqi Journal of Physics, 2023
In this work, two cone-inverted cylindrical and cross-hybrid dielectric resonator antennas are stacked and excited by the coaxial probe method with an operating standard resonant frequency of 5.438 GHz.
Nabeel Areebi, Jamal Nasir Jabir
doaj   +1 more source

Numerical investigation on compact multimode dielectric resonator antennas of very high permittivity [PDF]

open access: yes, 2008
Two well known numerical techniques, the Finite Element Method (FEM) and the Finite Integration in Time Domain (FIT), have been applied to study a low volume high permittivity dielectric resonator antenna.
Rotaru, M.   +4 more
core   +2 more sources

A Dual-Band, Dual-Polarized Filtering Antenna Based on Cross-Shaped Dielectric Strip Resonator

open access: yesMicromachines, 2022
A dual-band, dual-polarized filtering antenna with a cross-shaped dielectric strip resonator is proposed. The dual-band filtering radiation function is achieved by utilizing the odd and even modes of the stub loaded microstrip resonator to excite the ...
Lixin Jin   +4 more
doaj   +1 more source

PROPERTIES OF THE TUNABLE WAVEGUIDE-DIELECTRIC RESONATOR OF THE MILLIMETER BAND WITH THE INCREASED Q-FACTOR [PDF]

open access: yesРадиофизика и электроника, 2015
The resonance structures serve as the basis for many electronic devices. Therefore the creation of the effective tunable resonator is the actual and important problem.
R. I. Bilous   +3 more
doaj   +1 more source

Efficiency and Scalability of Dielectric Resonator Antennas at Optical Frequencies

open access: yesIEEE Photonics Journal, 2014
Dielectric resonators have been foreseen as a pathway for the realization of highly efficient nanoantennas and metamaterials at optical frequencies. In this paper, we study the resonant behavior of dielectric nanocylinders located on a metal plane, which
Longfang Zou   +7 more
doaj   +1 more source

Hybrid Dielectric Resonator Antenna Composed of High-Permittivity Dielectric Resonator for Wireless Communications in WLAN and WiMAX

open access: yesInternational Journal of Antennas and Propagation, 2012
The-hybrid dielectric resonator antenna consisted of a cylindrical high-permittivity dielectric resonator, a rectangular slot, and two-rectangular patches were implemented. The hybrid dielectric resonator antenna had three resonant frequencies. The lower,
Yih-Chien Chen
doaj   +1 more source

Excitation of a rectangular resonator through communication windows in the conveyor installation of microwave heating

open access: yesФизика волновых процессов и радиотехнические системы, 2022
Based on the excitation theory of L.A. Vainstein obtained simple and convenient iterative relations for excitation of a resonator in the form of a rectangular parallelepiped with a dielectric layer through several coupling windows in its walls.
Mikhail V. Davidovich   +2 more
doaj   +1 more source

A Wideband Circularly Polarized Dielectric Resonator Antenna Using Inverse f-Shaped Slot Excitation with Parasitic Metal Structure

open access: yesInternational Journal of Antennas and Propagation, 2022
In this paper, a single-fed wideband circularly polarized dielectric resonator antenna (DRA) is proposed. The antenna consists of a substrate, a cylindrical dielectric resonator, and four curved parasitic metal blocks that are rotated and placed around ...
Zizu Chen   +5 more
doaj   +1 more source

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