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Design and analysis of reconfigurable filters employing varactor and PIN diodes [PDF]
Engineering and Technology JournalThis work presents a comprehensive and comparative study on reconfigurable/tunable microstrip filters, aiming to analyze and understand the impact of varactors, PIN diodes, lumped capacitors, and inductors on the overall filter performance.
Salah Mahdi +2 more
doaj +1 more source
Demonstration of AlGaAs/GeSn p-i-n diodes [PDF]
APL Electronic DevicesThis study reports the fabrication and characterization of an Al0.3Ga0.7As/Ge0.853Sn0.147/GeSn p-i-n double heterostructure (DHS) diode using a grafting approach for advanced optoelectronic applications, building upon prior work on the band alignment of ...
Yang Liu +14 more
doaj +1 more source
Mechanical Stress Effects on 4H-Silicon Carbide Power Diodes
IEEE Open Journal of Power ElectronicsThis study discusses the effect of stress on 4H-silicon carbide (4H-SiC) power diodes using numerical simulations. Two power diodes were evaluated; namely, a 600 V PiN diode and 1.8 kV junction barrier Schottky (JBS) diode.
Takaya Sugiura +2 more
doaj +1 more source
Cost-Effective Design of Polarization and Bandwidth Reconfigurable Millimeter-Wave Loop Antenna
Sensors, 2023 A singly fed reconfigurable circular loop antenna is proposed for millimeter-wave (mmWave) communication systems. This antenna’s distinctive feature lies in its capacity to adjust both polarization and bandwidth characteristics, a capability made ...
Rawad Asfour +2 more
doaj +1 more source
Microstrip 3-Bit Fractal-based Phase Shifter
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022 This paper presents the implementation of a 3-bit microstrip fractal-based phase shifter operating in the 430 MHz to 470 MHz frequency range. The fractal structure is used to confine different delay line lengths in the same area due to the space-filling ...
L. P. Pontes +5 more
doaj +1 more source
Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing
Advanced Functional Materials, EarlyView.Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi +11 more
wiley +1 more source
Operating principles of pin diodes
Electrical Engineering in Japan, 2007 AbstractAnalytical models of the pin diode in a small‐current operation are not known yet. This article presents a simple analytical model of the pin diode operation with its confirmation by a numerical simulation. At the onset, carrier recombinations are not included for the sake of simplicity. The exact JF−VF characteristic $[J_{F} \propto \hbox{exp}(
openaire +2 more sources
Biomimetic Microfractals Based Flexible Triboelectric Nanogenerators
Advanced Functional Materials, EarlyView.A leaf‐skeleton‐based microfractal architecture is integrated with guided CuNW networks and biomimetic triboelectric polymer layers, enabling breathable, flexible, and material‐efficient triboelectric nanogenerators. The resulting system combines enhanced charge generation and charge transport, offering potential for next‐generation self‐powered ...
Amit Barua +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Co‐assembly of rationally designed glycosaminoglycan‐binding peptides with sulfated glycosaminoglycans yields supramolecular hydrogels with tunable mechanics and matrix‐mediated cytokine retention. The glycosaminoglycans thereby act as cofactors, driving a coil‐to‐β‐sheet transition that triggers gelation.
Shirel Veretnik +8 more
wiley +1 more source
Frequency selective reconfigurable microstrip antenna for cognitive radio applications
Advanced Electromagnetics, 2022 For the efficient utilization of electromagnetic radio spectrum cognitive radio communication system is employed, which deals with the spectrum scarcity. An efficient antenna is essential for the appropriate selection of the available frequencies.
D. S. Aldar
doaj +1 more source