Results 261 to 270 of about 139,447 (303)
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Narrowband electrooptic tunable notch filter
Applied Optics, 1986We describe the theory of a narrowband electrooptic tunable filter based on a Fabry-Perot etalon with distributed Bragg reflectors. The filter can be in either bulk or waveguide form. The input to the filter must be prefiltered to the stop-band of the Bragg mirrors. Once this is accomplished, the etalon possesses a very narrow notch in the Bragg filter
R, Lytel, G F, Lispcomb
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Comparison of Tunable Microwave Bandpass Filters
2018 11th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP), 2018The development of software-defined radio and Radio-over-Fiber solutions for the future 5G systems necessitates the availability of small, cost-effective and tunable microwave filters. Possibility of integration is another requirement. As variable capacitance diodes are lossy in the millimeter wave (mmW) region, other solutions are utilized, e.g ...
Bence Cseppento +2 more
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A tunable bandpass patch filter with varactors
2010 IEEE MTT-S International Microwave Symposium, 2010This paper presents a miniaturized tunable bandpass patch filter using varactors. The filter is conceived with a triple-mode circular patch resonator with four slots, where the varactors were connected. The extracted equivalent model, the varactors assembly configuration and their biasing are presented.
A., Serrano +3 more
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Tunable RF filters: Survey and beyond
2011 18th IEEE International Conference on Electronics, Circuits, and Systems, 2011Without a holistic design and fabrication approach, future wireless communication devices would be extremely large in size to accommodate multiple radio access technologies (RATs) compared to today's more conventional mono-mode devices. Typically multiple RAT devices will be comprised of multiple RF power amplifiers, low noise amplifiers (LNA), RF band
Abubakar Sadiq Hussaini +2 more
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On coupled-resonator filters with tunable bandwidth
2015 IEEE Radio and Wireless Symposium (RWS), 2015We present a tunable bandpass filter in parallel structure in comparison to a tunable filter in serial structure. The filters are tunable in bandwidth with a constant center frequency. The investigations are based on coupled-resonators bandpass filters.
M. K. Wohler +2 more
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Optical Tunable Filter for Gridless ROADM
Optical Fiber Communication Conference, 2017We fabricate an optical tunable filter for gridless signal drop in ROADMs. Its effectiveness is confirmed by experiments on 10-Gbaud intensity-modulated signals with 50-GHz spacing and 32-Gbaud dual-polarization QPSK and 16QAM signals with 33.3-GHz spacing.
Masaki Niwa +3 more
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Filtering of Nanoparticles with Tunable Semiconductor Membranes
ACS Nano, 2013Translocation dynamics of nanoparticles permeating through the nanopore in an n-Si semiconductor membrane is studied. With the use of Brownian Dynamics to describe the motion of the charged nanoparticles in the self-consistent membrane-electrolyte electrostatic potential, we asses the possibility of using our voltage controlled membrane for the ...
Anna, Nadtochiy +2 more
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2002
Abstract : The tunable HTS program goals are to develop a process, method, or device to tune high-temperature superconductor (HTS) resonant circuits. The process for tuning should preserve the low-loss nature of the s preconducting resonant circuits and be compatible with the operating environment of packaged HTS RF circuitry.
Mark Roberson, Joseph E. Mancusi
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Abstract : The tunable HTS program goals are to develop a process, method, or device to tune high-temperature superconductor (HTS) resonant circuits. The process for tuning should preserve the low-loss nature of the s preconducting resonant circuits and be compatible with the operating environment of packaged HTS RF circuitry.
Mark Roberson, Joseph E. Mancusi
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Tunable optical filter for colorimetric applications
Applied Optics, 1995A temperature-controlled tunable optical filter for use in the visible range and based on the Christiansen effect, in which the solid particles have been substituted with glass fibers, has been fabricated and tested. The construction of the filter and transmission properties are reported.
null Nicholas +2 more
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2005
A benchmark for the heat transfer problem, related to modeling of a tunable optical filter, is presented. It can be used to apply model reduction algorithms to a linear first-order problem.
Dennis Hohlfeld +2 more
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A benchmark for the heat transfer problem, related to modeling of a tunable optical filter, is presented. It can be used to apply model reduction algorithms to a linear first-order problem.
Dennis Hohlfeld +2 more
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