Results 81 to 90 of about 5,321 (175)
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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PIFA based reconfigurable multiband antenna for wireless applications [PDF]
, 2010 Copyright @ 2010 IEEEA compact reconfigurable four bands Planar Inverted-F Antenna (PIFA) is presented for Digital Video Broadcasting - Handheld (DVB-H), Universal Mobile Telecommunications System (UMTS), Global System for Mobile Communications (GSM800 ...
AbuTarboush, HF +5 more
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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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Millimeter-Wave Varactor-Less Oscillators: A Tutorial
This brief provides a brief tutorial on the recent advancements and developments invaractor-less frequency tuning techniques for millimeter-wave (mm-Wave) oscillators.
Luong, Howard C. +2 more
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Dual Polarized Reconfigurable Frequency Selective Surfaces [PDF]
, 2013 Novel band-stop active frequency selective surfaces (FSS) capable of modifying their response for different polarizations are proposed. Geometries based on full rings, and split rings are employed.
Sanz-Izquierdo, B., Parker, E.A.
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FDTD analysis of varactor-tuned patch antenna including device packaging effects
, 2001 A simple and effective technique to include a packaged varactor model within finite-difference-time-domain is presented. The new technique is validated by means of experimental measurements of a varactor-tuned patch antenna and the agreement between the ...
Urwin-Wright, PR +7 more
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A GaAs monolithic anti-series varactor pair for voltage-controlled capacitance with reduced RF nonlinearity [PDF]
, 2005 This paper presents a trial fabricated GaAs monolithic anti-series varactor pair. Its second-order and third-order harmonic distortions, which are generated from the nonlinearity of capacitance-voltage characteristics, are investigated experimentally and
Akaike, Masami +9 more
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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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Varactor element and low distortion varactor circuit arrangement
, 2007 Varactor element (Dl; D2) having a junction region, in which the depletion capacitance of the varactor element varies when a reverse bias voltage is applied to the varactor element.
De Vreede, L.C.N. (author)
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