Results 71 to 80 of about 85,450 (309)

Tunable n-path notch filters for blocker suppression: modeling and verification [PDF]

, 2013
N-path switched-RC circuits can realize filters with very high linearity and compression point while they are tunable by a clock frequency. In this paper, both differential and single-ended N-path notch filters are modeled and analyzed.
Ghaffari, A., Klumperink, E.A.M., Nauta, B.   +2 more
core   +2 more sources

Tunable active bandpass filter design

Electronics Letters, 2011
A tunable active bandpass filter that uses control voltage to select passband frequency response is presented. The proposed topology basically consists of a cascoded current-injection active inductor so as to tune passband frequency response from 2.35 to 3.66 GHz and extend the available bandwidth.
S.-W. Chen, J.-W. Wu, J.-D. Wu, J.-S. Li
openaire   +1 more source

Bidirectional Photoswitching of a Tailored Azobenzene with Red and Far‐Red Light Involving Triplet Sensitization in an Aqueous System

Advanced Science, EarlyView.
The action spectrum of a tailored azobenzene is shifted toward bio‐optical window through the chemical modification of its singlet and triplet energy levels. Consequently, the bidirectional photo‐switching of azobenzene in physiological conditions is achieved when excited by red and far‐red light, which offers greater tissue penetration.
Mila Miroshnichenko, Helen Hölzel, Edvinas Orentas, Karolis Kazlauskas, Pedro Ferreira, Fabienne Dumoulin, Carles Alcaide, Miquel Solà, Roger Bresolí‐Obach, Santi Nonell, Pankaj Bharmoria, Kasper Moth‐Poulsen   +11 more
wiley   +1 more source

Tunable Multi-Channels Bandpass InGaAsP Plasmonic Filter Using Coupled Arrow Shape Cavities

Photonics, 2022
A new design for a tunable multi-channel plasmonic bandpass filter was numerically investigated using the two-dimensional finite element method (2D-FEM).
Seham Abd-Elsamee, Nihal F. F. Areed, Hamdi A. El-Mikati, Salah S. A. Obayya   +3 more
doaj   +1 more source

Spatiotemporal self-similar fiber laser

, 2019
In this Letter, we demonstrate, to the best of our knowledge, the first spatiotemporally mode-locked fiber laser with self-similar pulse evolution. The multimode fiber oscillator generates parabolic amplifier similaritons at 1030 nm with 90 mW average ...
Kakkava, Eirini, Moser, Christophe, Psaltis, Demetri, Rahmani, Babak, Teğin, Uğur   +4 more
core   +1 more source

Improved All-Fiber Acousto-Optic Tunable Bandpass Filter

IEEE Photonics Technology Letters, 2017
Gustavo Ramírez-Meléndez, M. Bello-Jiménez, O. Pottiez, Miguel V. Andrés   +3 more
openalex   +3 more sources

Tunable High‐Performance Metamaterial Filters Based on Novel SRR Architectures

Advanced Science, EarlyView.
Based on two novel SRR configurations and two independent SRR integration approaches, four tunable bandpass metamaterial filters were fabricated with an ultra‐thin ceramic substrate. Among them, SM‐2 achieves over 97% electromagnetic wave transmittance, with a minimal 1.15% deviation in its resonant frequency prediction, making them promising ...
Lingxi Qu, Liya Zheng, Ruopeng Liu, Chunlin Ji, Bin Li   +4 more
wiley   +1 more source

21.69–24.36 GHz MEMS Tunable Band-Pass Filter

Micromachines, 2016
The K-band microelectromechanical systems (MEMS) tunable band-pass filter, with a wide-frequency tunable range and miniature size, is able to fulfill the requirements of the multiband satellite communication systems.
Zhongliang Deng, Hao Wei, Xubing Guo
doaj   +1 more source

High Performance, Continuously Tunable Microwave Filters using MEMS Devices with Very Large, Controlled, Out-of-Plane Actuation

, 2018
Software defined radios (SDR) in the microwave X and K bands offer the promise of low cost, programmable operation with real-time frequency agility. However, the real world in which such radios operate requires them to be able to detect nanowatt signals ...
Beacken, Marc, Bishop, David J., Chang, Jackson, Holyoak, Michael, Imboden, Matthias, Kannell, George   +5 more
core   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

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