Results 161 to 170 of about 19,862 (222)

Dual band bandpass filters with full band reflectionless response and enhanced upper stopband suppression. [PDF]

Sci Rep
Wu G, Jin Y, Zhang W, Jiang R, Shi J.
europepmc   +1 more source

Correlated-photon time- and frequency-resolved optical spectroscopy. [PDF]

Nat Commun
Álvarez-Mendoza R, Uboldi L, Lyons A, Cogdell RJ, Cerullo G, Faccio D.   +5 more
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Alloying Ag₂S Quantum Dots with Gold: Controlling NIR-I Emission with Material Modification. [PDF]

Small
Chelani K, Price TW, Gonçalves V, Çaha I, Deepak FL, de Rosales RTM, Gallo J, Stasiuk GJ.   +7 more
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High-efficiency broadband active metasurfaces via reversible metal electrodeposition. [PDF]

Light Sci Appl
Li Q, Kulkarni SP, Sui C, Chen TH, Yan G, Wu R, Chen W, Hung PJ, Wu X, Emersic T, Aydin K, Hsu PC.   +11 more
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Voltage tunable bandpass filter

2015 Signal Processing Symposium (SPSympo), 2015
A voltage tunable bandpass filter is presented. The filter is realized in microstrip technology using two stepped-impedance resonators. The voltage tuning is provided by means of varactor diodes. The filter has fixed absolute bandwidth of 30 MHz in the frequency range from 375 MHz to 915 MHz. The insertion loss is lower than 5 dB and return loss better
Arkadiusz Golaszewski, Adam Abramowicz
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Tunable multimode-interference bandpass fiber filter

Optics Letters, 2010
We report on a wavelength-tunable filter based on multimode interference (MMI) effects. A typical MMI filter consists of a multimode fiber (MMF) spliced between two single-mode fibers (SMF). The peak wavelength response of the filter exhibits a linear dependence when the length of the MMF is modified.
Antonio-Lopez, J. E., Castillo-Guzman, A., May-Arrioja, D. A., Selvas-Aguilar, R., Likamwa, P.   +4 more
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Packaged Tunable Combline Bandpass Filters

IEEE Microwave Magazine, 2015
This article describes the design of a packaged tunable bandpass filter used for the Student Filter Design Competition held during the 2014 International Microwave Symposium (IMS2014) in Tampa, Florida. The focus of the 2014 competition was to demonstrate a tunable bandpass filter between two wide separated bands.
Fang-Sheng Su, Yi-Ming Chen, Sheng-Fuh Chang   +2 more
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Automatically tunable bandpass filter

2017 18th International Carpathian Control Conference (ICCC), 2017
This article deals with automatically tunable bandpass second-order IIR filter. Filter is applied on the test stand which is used for active vibration control of sliding bearings with the use of piezoactuators. Control algorithm of vibration control was realized in Simulink and applied in dSPACE control system.
Miroslav Pawlenka, Miroslav Mahdal
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Active varactor tunable bandpass filter

IEEE Microwave and Guided Wave Letters, 1993
A microstrip active varactor tunable bandpass filter is presented. The filter is based upon the negative resistance method using a microstrip combline network. A 1.8-GHz, two-pole device with a bandwidth of 2% was constructed. 0.6 octave tuning with significant improvement in passband performance was achieved compared with its passive counterpart. >
S.R. Chandler, I.C. Hunter, J.G. Gardiner   +2 more
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Tunable dielectric resonator bandpass filter

13th International Conference on Microwaves, Radar and Wireless Communications. MIKON - 2000. Conference Proceedings (IEEE Cat. No.00EX428), 2002
A simple but effective technique has been applied to magnetically tune the quasi-TE/sub 011/ mode dielectric resonator. The tuning was achieved by means of a ferrite rod situated centrally in the dielectric resonator and extending over the shield. The ferrite parameters were changed by DC magnetic field.
J. Krupka, A. Abramowicz, K. Derzakowski
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