Results 41 to 50 of about 85,692 (393)
, 2005 In the present paper we discuss the effect of artificial magneto-dielectric substrates on the impedance bandwidth properties of microstrip antennas. The results found in the literature for antenna miniaturization using magnetic or magneto-dielectric ...
Ikonen, Pekka +3 more
core +2 more sources
RF MEMS Based Tunable Bowtie Shaped Substrate Integrated Waveguide Filter [PDF]
, 2015 A tunable bandpass filter based on a technique that utilizes substrate integrated waveguide (SIW) and double coupling is presented. The SIW based bandpass filter is implemented using a bowtie shaped resonator structure.
Baharudin, Z. +4 more
core +1 more source
Perforated dielectric resonator antennas
Electronics Letters, 2002 A dielectric resonator antenna (DRA) is formed by perforating a dielectric substrate with a lattice of holes. The performance of several perforated DRA prototypes is compared to a conventional DRA and the results demonstrate better gain and cross-polarisation levels.
A. Petosa, A. Ittipiboon, S. Thirakoune
openaire +1 more source
Broadbeam Cylindrical Dielectric Resonator Antenna
IEEE Access, 2019 A novel widebeam aperture-coupled cylindrical dielectric resonator antenna is proposed, which consists of multi-layered cylindrical ceramic disks joined together to achieve the required height.
Syeda H. H. Mashhadi +2 more
doaj +1 more source
Технічна інженерія, 2020 The characteristics of the horn antenna based on the foreign rectangular waveguide with partial dielectric filling (PDF) and the communication loop are considered.
N.M. Каrashchuk +4 more
doaj +1 more source
Recent developments in bandwidth improvement of dielectric resonator antennas
International journal of RF and microwave computer-aided engineering, 2019 This article shows a compressed chronological overview of dielectric resonator antennas (DRAs) emphasizing the developments targeting to bandwidth performance characteristics in last three and half decades.
S. K. K. Dash, T. Khan
semanticscholar +1 more source
Wristwatch-Style Wearable Dielectric Resonator Antennas for Applications on Limps
IEEE Access, 2020 A wristwatch-style wearable dielectric resonator antenna (DRA) is proposed for the 2.45-GHz ISM band and sub-6 GHz 5G NR bands around 2.5 GHz, such as the commercial band for China Mobile Communications Corporation.
Ma Boyuan +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 +12 more
core +1 more source
Resonant hemispherical dielectric antenna
Electronics Letters, 1984 An antenna consisting of a resonant dielectric hemisphere on top of a ground plane is investigated. Calculations of the internal and external fields are made with emphasis on the lowest-order mode that results in efficient radiation in the direction perpendicular to the ground plane.
M.W. McAllister, S.A. Long
openaire +1 more source
Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications
Advanced Functional Materials, EarlyView.Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai +8 more
wiley +1 more source