Results 71 to 80 of about 5,179 (216)
Fully adaptable band‐stop filter using varactor diodes [PDF]
, 2010 In this article a reconfigurable band-stop filter able to reconfigure center frequency, bandwidth, and selectivity for fine tuning applications is demonstrated, device topology discussion and implementation details are given, and followed by discussion ...
ALONSO CORONA CHAVEZ +3 more
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, 2007 The influences of Casimir and van der Waals forces on the nano-electromechanical systems (NEMS) electrostatic torsional varactor are studied. A one degree of freedom, the torsional angle, is adopted, and the bifurcation behaviour of the NEMS torsional ...
林文惠 +2 more
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Comparison of Antennas Electrical Tuning Methods for Mobile Applications
Известия высших учебных заведений России: Радиоэлектроника, 2017 The various methods of antenna electrical tuning for mobile handsets working in several LTE frequency bands are described. The PIFA-type antenna containing high and low frequency branches is proposed.
A. D. Grigoriev, B. Djalilov
doaj
A micromachined zipping variable capacitor
, 2010 Micro-electro-mechanical systems (MEMS) have become ubiquitous in recent years and are found in a wide range of consumer products. At present, MEMS technology for radio-frequency (RF) applications is maturing steadily, and significant improvements have ...
Pu, Suan-Hui
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, 2007 The influences of Casimir and van der Waals forces on the nano-electromechanical systems (NEMS) electrostatic torsional varactor are studied. A one degree of freedom, the torsional angle, is adopted, and the bifurcation behaviour of the NEMS torsional ...
林文惠, 赵亚溥
core +2 more sources
Stability of varactor circuits
Electronics Letters, 1994 Chaotic instability of a varactor circuit with a quasiperiodic excitation is studied. It is shown that, compared to single frequency forcing, a quasiperiodic input, such as an amplitude modulated signal, causes a considerable drop in the threshold for chaotic onset. Analytical conditions for chaos to arise are also obtained.
Vavriv D.M., Oksasoglu A.
openaire +2 more sources
四川大学学报. 自然科学版, 2017 The surface-wave waveguide, based on the high impedance surface, is widely used to transform the surface-wave energy or to guide surface-waves along a constrained path. However, there still remain two issues for almost surface-wave waveguides. First, the
Zhou Yong-Hong +4 more
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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
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Reliability analysis of torsional varactor
, 2007 A torsional MEMS varactor with wide dynamic range, lower actuation voltage and isolation between actuation voltage and signal voltage has been proposed in C. Venkatesh et al. (2005).
Bhat, Navakanta, Venkatesh, C
core
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
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