Results 21 to 30 of about 5,321 (175)
Linear frequency tuning in an LC-resonant system using a C–V response controllable MEMS varactor
Micro and Nano Systems Letters, 2017 This paper proposes a device level solution to achieve linear frequency tuning with respect to a tuning voltage (V tune ) sweep in an inductor (L)–capacitor (C) resonant system. Since the linearity of the resonant frequency vs.
Chang-Hoon Han +4 more
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Reconfigurable Filtenna using Varactor Diode for Wireless Applications
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 This paper presents a compact and planar reconfigurable filtenna for application in Wireless systems. The filtenna is composed of a UWB circular antenna and a filter with two trapezoidal resonators.
J. A. I. Araujo +7 more
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Crystals, 2021 This work presents a method for reducing acoustic resonances in ferroelectric barium strontium titanate (BST)-based bulk ceramic varactors, which are capable of operation in high-power matching circuits.
Prannoy Agrawal +11 more
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Slotted Printed Monopole UWB Antennas with Tunable Rejection Bands for WLAN/WiMAX and X-Band Coexistence [PDF]
Radioengineering, 2018 Four versions of the compact hexagonal-shaped monopole printed antennas for UWB applications are presented. The first proposed antenna has an impedance bandwidth of 127.48 % (3.1 GHz to 14 GHz), which satisfies the bandwidth for ultra-wideband ...
I. Elfergani +4 more
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Microstrip Tunable Bandpass Filter with the Colinear Resonators
International Journal of Antennas and Propagation, 2013 This paper presents the lumped element circuit and transmission line equivalent circuit for a varactor-tuned bandpass filter. The filter consists of transmission lines, fixed capacitors, and a varactor diode.
Z. P. Wang +3 more
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Series vs Parallel Reflection-Type Phase Shifters
IEEE Access, 2020 A performance comparison between series and parallel resonant circuits in the Reflection-Type Phase Shifter (RTPS) configuration is presented in this article.
Vitaly Kirillov +2 more
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IEEE Access, 2018 A dual-layer active reflectarray configuration is proposed for broad-band beam-steering and/or frequency-tunable applications. A unit cell composed by two stacked fixed-size rectangular patches, properly loaded with a single varactor diode, is designed ...
Sandra Costanzo +3 more
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Harmonic Generation by Nondegenerate P-N Junction Varactor Diodes
Active and Passive Electronic Components, 1997 This paper deals with the large-signal analysis of nondegenerate p-n junction varactor diodes. Expressions are obtained for the harmonics of the varactor diode current when driven by a sinusoidal voltage signal. The special case of relatively small input
Muhammad Taher Abuelma'atti
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Dual-Layer Beamscanning Reflectarray Antenna Operating at Ku-Band
Journal of High-Frequency Communication Technologies, 2023 This paper presents a beam scanning electronically reconfigurable reflectarray configuration for Ku-band applications using a single varactor diode. A 15×15 center-fed reconfigurable reflectarray antenna is designed consisting of 225 octagonal shaped ...
Vidhyashree Suresh +2 more
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From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits
Advanced Science, EarlyView.This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang +5 more
wiley +1 more source