Results 11 to 20 of about 20,641 (263)

Material Characterization Innovations in Microwave Measurement Laboratory of Amirkabir University of Technology [PDF]

open access: yesInternational Journal of Information and Communication Technology Research, 2023
This paper presents some microwave circuits, designed for characterization of materials’ permittivity. These include single and multiple-resonant types, transmission line approaches, radiation structures and planar circuits.
Gholamreza Moradi
doaj  

Induced Circuits in Planar Graphs

open access: yesJournal of Combinatorial Theory, Series B, 1994
Previously the authors have given a polynomial-time algorithm for the problem of finding a minimum cost circuit without chords (induced circuit) traversing two given vertices of a planar graph. The algorithm is based on the Ellipsoid Method. Here we give an \(O(n^ 2)\) combinatorial algorithm to determine whether two nodes in a planar graph lie on an ...
Mcdiarmid, C.   +3 more
openaire   +4 more sources

Design Technology Co-Optimization Strategy for Ge Fraction in SiGe Channel of SGOI FinFET

open access: yesNanomaterials, 2023
FinFET devices and Silicon-On-Insulator (SOI) devices are two mainstream technical routes after the planar MOSFET reached the limit for scaling. The SOI FinFET devices combine the benefits of FinFET and SOI devices, which can be further boosted by SiGe ...
Shixin Li, Zhenhua Wu
doaj   +1 more source

Planar Beam Steerable Parasitic Array Antenna System Design Based on the Yagi-Uda Design Method

open access: yesInternational Journal of Antennas and Propagation, 2019
A planar beam steerable array antenna system is proposed with dual-control circuits for feeding and reactive loadings. Two orthogonally arranged planar dipoles are excited by SPDT switching circuits, while the forward and backward beam directions are ...
Seok-Jae Lee   +2 more
doaj   +1 more source

Miniaturization of microwave planar circuits using composite microstrip/coplanar-waveguide transmission lines

open access: yesAlexandria Engineering Journal, 2022
The rapid development of modern communication systems propels the demand of high performance and miniaturization of RF/microwave components. Power dividers and filters are indispensable circuit components in amplifiers and antenna feed-networks which ...
Kwok L. Chung   +4 more
doaj   +1 more source

Ultra-dense interferometric chain architecture for datacom and telecom applications [PDF]

open access: yesEPJ Web of Conferences, 2022
Further increase in the density of integrated planar lightwave circuits (PLCs) depends on the introduction of compact guided-wave layout solutions. We describe a novel architecture for coiling multistage interferometric devices with densities reaching ...
Bidnyk Serge   +2 more
doaj   +1 more source

A review on future planar transmission line

open access: yesCogent Engineering, 2016
Substrate Integrated Waveguide (SIW) is an emerging trend in planar technology. The SIW structure consists of two rows of conducting cylinders in a dielectric substrate.
Ashok Kumar   +2 more
doaj   +1 more source

5G Millimeter Wave Endfire Array Antenna with Printed Inverted-F Structure

open access: yesInternational Journal of Antennas and Propagation, 2022
In this design, a novel inverted F antenna with a low profile feed structure is proposed for millimeter-wave (mmW) applications. The array element consists of a printed inverted F antenna and a L-shaped parasitic deflector, approximately forming a ...
Shang Feng, Xu Xin, Ren Chuxuan
doaj   +1 more source

Substrate Integrated Transmission Lines: Review and Applications

open access: yesIEEE Journal of Microwaves, 2021
This paper presents a general overview of substrate integrated transmission lines, from the perspective of historical background and progress of guided-wave structures and their impacts on the development of microwave circuits and integration solutions ...
Ke Wu   +2 more
doaj   +1 more source

Design of Low-Cost Full W-Band 8th Harmonic Mixers for Frequency Extension of Spectrum Analyzer

open access: yesIET Circuits, Devices and Systems, 2023
High-order harmonic mixer is popular for frequency extension of spectrum analyzer (SA) from microwave to millimeter-wave or even terahertz band. The manufactures of SA usually offer expensive harmonic mixers where frequency extension is needed.
Jian Guo   +5 more
doaj   +1 more source

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