Results 241 to 250 of about 85,450 (309)

A microstrip bandpass filter with 2 independently tunable transmission zeros

Microwave and Optical Technology Letters, 2020
This letter presents a new design method for a tunable bandpass filter with independently and widely tunable transmission zeros (TZs). Varactor‐loaded microstrip resonators are introduced to a fixed bandpass filter to realize the continuously tunable TZs.
Fei Cheng, Ping Lu, Kama Huang
exaly   +2 more sources

Midinfrared Compatible Tunable Bandpass Filter Based on Multimode Interference in Chalcogenide Fiber

Journal of Lightwave Technology, 2020
We demonstrate a mid-infrared compatible tunable bandpass filter that consists of a singlemode-multimode-singlemode fiber structure, made from chalcogenide fibers. Experiments have been carried out using step-index multimode fibers with small core radius,
Kaixuan Zhang, Imtiaz Alamgir, M. Rochette   +2 more
semanticscholar   +1 more source

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
openaire   +3 more sources

RF Co-Designed Bandpass Filter/Circulator With Tunable Center Frequency, Bandwidth, and Out-of-Band Isolation

IEEE Microwave and Wireless Components Letters, 2021
This letter reports on a new type of miniaturized RF co-designed bandpass filter/circulator (BPFC). Miniaturization is achieved by: 1) capacitively loading a multi-mode ferrite-based disk resonator; 2) combining the function of an RF circulator and a ...
Andrea Ashley, D. Psychogiou
semanticscholar   +1 more source

A novel and compact 3.5 GHz tunable bandpass filter in SIW technology with shunt‐inductive discontinuities switched by pin diode switches

Microwave and optical technology letters (Print), 2020
This article presents a novel tunable bandpass filter designed in substrate integrated waveguide (SIW) technology to operate at 3.5 GHz, a frequency widely used in 5G and WiMAX systems. The bandpass filter uses shunt‐inductive discontinuities provided by
R. C. Caleffo, F. Correra
semanticscholar   +1 more source

Tunable in-line fiber-optic bandpass filter

Optics Letters, 1994
An in-line fiber-optic bandpass wavelength filter has been demonstrated based on a single-mode fiber, side polished into the core, in evanescent contact with a high-index multimode overlay waveguide. Passband linewidths down to 5.2 nm were observed, while spacing between transmission peaks was seen to range from 45 to 256 nm for variation of the ...
K, McCallion, W, Johnstone, G, Fawcett
openaire   +2 more sources

Magnetically tunable bandpas filter of teraherz radiation

Izvestiya vysshikh uchebnykh zavedenii. Fizika, 2022
A magnetically tunable bandpass filter of terahertz radiation is created and investigated. The filter is a cell with a magnetic fluid and a system of inductance coils made in the form of Helmholtz rings. The magnetic fluid consists of automotive synthetic engine oil and 5BDSR alloy microparticles with a mixed amorphouscrystalline structure. When a cell
Kochnev, Zahar S., Kistenev, Yury V., Borisov, Alexey V.   +2 more
openaire   +2 more sources

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
openaire   +1 more source

Optical bandpass Lyot filter with tunable bandwidth

2012 19th International Conference on Telecommunications (ICT), 2012
We experimentally demonstrate the feasibility of the bandwidth tuning of a liquid-crystal based bandpass Lyot filter. This bandwidth tuning is achieved by applying a voltage to vary the birefringence of the liquid-crystal cells whose optical path difference takes predefined discrete values. We show that for a 2-stage liquid-crystal Lyot filter and at λ
Rachid Hamdi, Robert Mikhael Farha, Salah Redadaa, Badr-Eddine Benkelfat, Djamel Abed, Abderrezak Halassi, Yassin Boumakh   +6 more
openaire   +1 more source

A microstrip bandpass filter with tunable bandwidth and center frequency

Microwave and optical technology letters (Print), 2021
This paper presents a bandwidth and center frequency tunable bandpass filter with wide tuning range. The proposed filter employs two cascade cross‐shaped resonators.
Anrong Chen, Tao Yang
semanticscholar   +1 more source