Electronically tunable bandpass filter
, 1990 An electronically tunable bandpass filter is presented. It is a combline filter realized in microstrip form. The filter is made tunable by using the variable capacitance of a GaAs fet (or of a varactor). With the use of this technique it is possible to achieve relative bandwidth from 8% to 30%, a tuning bandwidth 'up to 50% and a center frequency up to
Bianchi, G., Pinto, G.
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A Wideband and High Rejection Multimode Bandpass Filter Using Stub Perturbation [PDF]
, 2009 Kaixue Ma +3 more
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Narrowband SIW-SSPP Hybrid Bandpass Filter With Compact Profile at Ka-Band [PDF]
, 2023 Baoqing Zhang +11 more
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Dorsal Raphe VIP Neurons Are Critical for Survival‐Oriented Vigilance
Advanced Science, EarlyView.DRNVIP neurons in mice and primates are strategically positioned to influence the central extended amygdala via feedback loops. They regulate the excitability of PKC‐δ neurons in the ovBNST and CeA through glutamate release. Their ablation heightens activity in these regions, disrupts active‐phase sleep architecture, enhances risk assessment behaviors ...
Adriane Guillaumin +15 more
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Ultra fine measurement of the effect of a vacuum exposure on the central wavelength of narrow-bandpass interference filters manufactured by dual ion beam sputtering [PDF]
, 2017 Johan Floriot +3 more
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A CMOS Q-Enhancement Bandpass-Filter For Use In Paging Receivers [PDF]
, 1998 Paging receivers often have to work in a dense\ud signal environment. This poses high demands on the preselection\ud filter. One of the most difficult aspects is the large\ud image rejection demand, which only can be satisfied by use\ud of a narrow-band ...
Eikenbroek, J.W.Th. +3 more
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Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
From Microscale to Nanoscale Shadow Electrochemiluminescence Microscopy
Angewandte Chemie, EarlyView.In this research we report on the label‐free shadow electrochemiluminescence (shadow ECL) microscopy of microscale and nanoscale objects. By systematically investigating various influencing factors—including optical configuration, electrode activity, frame averaging, exposure time, and particle arrangement—we further confirm the nano‐imaging potential ...
Xiaodan Gou +5 more
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Enhancement of Stopband Attenuation Bandpass Filter Using Complementary Split Ring Metamaterial Resonators [PDF]
, 2013 Mohammed A. Fouad +3 more
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A dual‐band filtering structure for highly selective reconfigurable bandpass filter and filtering balun [PDF]
, 2022 Jinqun Ge, Guoan Wang
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