Results 91 to 100 of about 9,744 (208)
Independently Tunable Concurrent Dual-Band VCO Using Square Open-Loop Resonator
IEEE Access, 2018 A concurrent dual-band voltage-controlled oscillator (VCO) with independently tunable dual oscillation frequencies is proposed. A shared square open-loop dual-mode resonator and two varactor diodes are the basic units offering flexible tuning for the ...
Boqiong Li +3 more
doaj +1 more source
A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source
Linear phase demodulator including a phase locked loop with auxiliary feedback loop [PDF]
, 1976 A phase modulated wave that may have no carrier power is demodulated by a phase locked loop including a phase detector for deriving an A.C. data output signal having a magnitude and a phase indicative of the phase of the modulated wave.
Rippy, R. R.
core +1 more source
A new resonant circuit for 2.45 GHz LC VCO with linear frequency tuning [PDF]
, 2011 A new MOS varactor bank is proposed to implement a 2.45 GHz SiGe BiCMOS LC-tank voltage controlled oscillator (VCO) with linear frequency tuning. Compared to a conventional VCO, the proposed technique improves the quality factor of the LC-tank while ...
Dinc, Tolga +6 more
core
Millimetre-wave varactor multipliers
Electronics Letters, 1966 Results are presented of measurements on frequency doublers in the millimetre-wave region employing unencapsulated silicon varactor diodes types ZC103 and ZC70D and a gallium-arsenide/phosphor-bronze point-contact varactor.
F.A. Benson, W.F. Winder
openaire +1 more source
Varactor-Based Continuously Tunable Microstrip Bandpass Filters: A Review, Issues and Future Trends
IEEE AccessElectronically tuned bandpass filters are crucial frequency-selective devices in tunable RF front-ends and are extensively utilized in the fields of communications and sensing.
Mengjie Qin +6 more
doaj +1 more source
Tunable multiband microstrip antenna for 5GHz WLAN [PDF]
, 2013 Copyright @ 2013. Ali Ejaz, R. Nilavalan & Hattan Abutarboush. This is a research/review paper, distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License http://creativecommons.org/licenses/by-nc/3.0 ...
Abutarboush, H, Ejaz, A, Nilavalan, R
core
A Fully Parameterized Fem Model for Electromagnetic Optimization of an RF Mems Wafer Level Package [PDF]
, 2007 In this work, we present a fully parameterized capped transmission line model for electromagnetic optimization of a wafer level package (WLP) for RF MEMS applications using the Ansoft HFSS-TM electromagnetic simulator.
Bartek, M. +4 more
core +2 more sources
Parametric Amplification/Mixing Using the Varactor Diode
Active and Passive Electronic Components, 1996 This paper deals with the large-signal analysis of parametric amplification/mixing using reverse biased p-n junction varactor diodes. Expressions are obtained for the current components of the parametric amplification/mixing.
Muhammad Taher Abuelma'atti
doaj +1 more source
A Reconfigurable MIMO/UWB MIMO Antenna for Cognitive Radio Applications
IEEE Access, 2019 A novel multi-mode frequency reconfigurable MIMO and an ultrawideband (UWB) MIMO antenna design for cognitive radio applications is proposed in this paper.
Xiongwen Zhao +2 more
doaj +1 more source