Results 31 to 40 of about 272 (168)

Design and Analysis of Sierpinski Fractal Antennas for Millimeter‐Wave 5G and Ground‐Based Radio Navigation Applications

open access: yesTransactions on Emerging Telecommunications Technologies, Volume 35, Issue 11, November 2024.
This study comprises distinct sections: abstract, introduction, and review of related papers. It delves into design and simulation, utilizing tools like CST, VNA, power sensors, and spectrum analyzers. Verification is conducted through diverse angles of radiation measurement. The research employs a comprehensive approach to advance understanding in the
Arun Raj, Durbadal Mandal
wiley   +1 more source

Textile Multilayer Cavity Slot Monopole For UHF Applications

open access: yes, 2017
A low-profile multilayer textile antenna inspired by a folded cavity with a broad slot monopole is presented for wearable applications in the UHF band.
Ranasinghe, D.C.   +5 more
core   +1 more source

High power, broadband, coaxial to microstrip bi‐directional coupler in the VHF/UHF band

open access: yesIET Science, Measurement &Technology, Volume 18, Issue 9, Page 581-590, November 2024.
In this paper, a broadband high‐power bi‐directional coupler for ISM applications in the VHF and UHF bands, and with a power handling of 1 kW, has been presented. Abstract Broadband couplers consist usually of multiple coupled lines that are each a quarter wave‐length long.
Tohid Naeimi, Arash Ahmadi
wiley   +1 more source

Inkjet‐printed capacitively loaded Marchand baluns with enhanced fractional bandwidths

open access: yesElectronics Letters, Volume 60, Issue 20, October 2024.
This article outlines a method to design compact, wideband capacitively loaded Marchand baluns for balanced antenna systems. It introduces a novel integration approach using inkjet printing and demonstrates ultra‐wide bandwidths and good performance in terms of size and balance metrics within the S and C bands.
Joe Steele, Dimitra Psychogiou
wiley   +1 more source

Patterning Magnonic Structures via Laser Induced Crystallization of Yittrium Iron Garnet

open access: yesAdvanced Functional Materials, Volume 34, Issue 36, September 4, 2024.
Arbitrary shaped magnonic structures can be patterned in amorphous thin films of Yttrium Iron Garnet (YIG) by laser induced local crystallization, with no need for etching and without exposing the entire sample to a high thermal budget. Spin wave attenuation distances of ≈5 µm are measured in patterned conduits, compatible with a damping coefficient of
Andrea Del Giacco   +17 more
wiley   +1 more source

Reconfigurable metasurface array for diverse retrodirective reflections and radar cross section reduction

open access: yesNanophotonics, Volume 13, Issue 19, Page 3737-3748, August 2024.
Abstract Retroreflectors can scatter the arbitrarily incident wave back to incoming direction, demonstrating great potential in wireless communication. However, there are limitations in adaptive retroreflection and polarization modulation with the existing retroreflectors. In this paper, a novel metasurface array with a reconfigurable transmission line
Wen Yue Wei   +4 more
wiley   +1 more source

Stripline/Microstrip Transition in Multilayer Circuit Board

open access: yes, 2005
A stripline-to-microstrip transition has been incorporated into a multilayer circuit board that supports a distributed solid-state microwave power amplifier, for the purpose of coupling the microwave signal from a buried-layer stripline to a top-layer ...
Epp, Larry, Khan, Abdur
core  

A finite‐difference‐based technique for numerically efficient computation of capacitance matrices for 2‐dimensional multi‐conductor problems involving thin dielectric coating

open access: yesInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 37, Issue 4, July/August 2024.
Abstract Numerical computation of capacitance matrices using conventional finite‐difference (FD) technique for arbitrarily shaped multi‐conductor problems which typically involve thin dielectric coating is challenging due to the fact that an extremely fine discretization of the computational domain is required to capture the nuances of the geometries ...
Kapil Sharma, Raj Mittra
wiley   +1 more source

Analisys of Conformal Antennas for Avionics Applications

open access: yes, 2007
Conformal antennas might have an important impact on communication and navigation applications on aircraft, ships and other vehicles. This thesis work presents a general study on conformal antennas and their potential application on aircraft structures ...
Redondo Gonzalez, Maria del Carmen
core  

Self‐packaged MISL‐based miniaturized high Q factor bandpass filter

open access: yesElectronics Letters, Volume 60, Issue 3, February 2024.
This paper proposes a technique named self‐packaged metal integrated suspended line to design a high Q factor bandpass filter with low loss and a compact size. Abstract This paper proposes a technique named self‐packaged metal integrated suspended line (MISL) to design a high Q factor bandpass filter (BPF).
Kaixue Ma, Songhua Lin, Yi Wu
wiley   +1 more source

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