Results 131 to 140 of about 2,779,889 (365)
Axially symmetrical Fabry-Perot oscillator with multiple devices inserted in dielectric substrate
, 1997 We investigate an axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric substrate for power combining of many more devices in the microwave and millimeter wave frequency range.
Sanagi, Minoru +5 more
core +1 more source
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths [PDF]
, 2003 Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74/spl deg/
Blaikie, R.J. +7 more
core +1 more source
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
IEEE Access, 2019 In order to accurately design microwave, millimeter-wave components and circuits, a simple and accurate method for extracting extremely wideband characteristics of the printed circuit board (PCB), including relative dielectric constant, dielectric loss ...
Yi-Wen Wu +4 more
doaj +1 more source
Integrated Circuit Signal Generation and Detection Techniques for Microwave and Sub-Millimeter Wave Signals [PDF]
, 2012 The unabated reduction of device feature sizes in semiconductor processes, particularly in complementary metal-oxide semiconductor (CMOS) processes, has served as the enabling factor behind integrated electronic systems of ever increasing complexity and ...
Bohn, Florian
core +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
A 3-D Printed Spherical Antenna With Bandwidth Enhancement Under Operation of Dual Resonance
IEEE Access, 2020 In this paper, a three-dimensional (3-D) printed spherical antenna with bandwidth enhancement under the operation of TM101 and TM211 modes is presented. The antenna is started from a metallized spherical cavity with a rectangular feed waveguide.
Yu-Jian Zhu +6 more
doaj +1 more source
4-Port MIMO Antenna with Defected Ground Structure for 5G Millimeter Wave Applications
Electronics, 2020 We present a 4-port Multiple-Input-Multiple-Output (MIMO) antenna array operating in the mm-wave band for 5G applications. An identical two-element array excited by the feed network based on a T-junction power combiner/divider is introduced in the ...
M. Khalid +7 more
semanticscholar +1 more source
Graphene in Millimeter Wave Devices
, 2014 We present work on graphene devices and circuits for microwave and millimeter wave applications, including detectors, mixers and microwave amplifiers.
Audrey Zak +14 more
core +1 more source
Advanced Engineering Materials, EarlyView.The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht +5 more
wiley +1 more source