Results 61 to 70 of about 19,862 (222)

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

Harnessing optical micro-combs for microwave photonics

, 2018
In the past decade, optical frequency combs generated by high-Q micro-resonators, or micro-combs, which feature compact device footprints, high energy efficiency, and high-repetition-rates in broad optical bandwidths, have led to a revolution in a wide ...
Chu, Sai Tak, Little, Brent E., Mitchell, Arnan, Morandotti, Roberto, Moss, David J., Moss, DJ (reprint author), Swinburne Univ Technol, Ctr Microphoton, Hawthorn, Vic 3122, Australia., Nguyen, Thach G., Wu, Jiayang, Xu, Xingyuan   +8 more
core   +1 more source

SUPER: Upcycling Genetic Parts for Precise Gene Expression Control, Leakage Minimization, and Genetic Circuit Stability

Advanced Science, EarlyView.
To precisely modulate natural and synthetic regulatory parts, SUPER is introduced as a sophisticated and tunable controller of genetic devices without requiring sequence modification on the target. SUPER enhances dynamic range of RNA‐, chemical‐, temperature‐, and protein‐responsive biosensors up to 1011%, and converts biosensors to cover an expanded ...
Taeyang Heo, Dongwon Park, Woosub Shin, Jongmin Kim   +3 more
wiley   +1 more source

Harmonic suppressed coupled stepped-impedance resonator based dual-band tunable bandpass filter

Engineering Science and Technology, an International Journal, 2017
In this paper, a tunable dual-band bandpass filter (BPF) based on a varactor-loaded coupled stepped-impedance resonator is presented. Transmission matrices techniques are employed to explain the working concept of proposed tunable BPF. For validating the
Amarjit Kumar, Nagendra Prasad Pathak
doaj   +1 more source

Systematic Benchmarking of a Noise‐Tolerant Conductive Hydrogel Electrode for Epidermal Bioelectronics

Advanced Science, EarlyView.
General schematic of the approach. Abstract Conventional Silver/Silver Chloride (Ag/AgCl) electrodes remain the clinical standard for electrophysiological monitoring but are hindered by poor skin conformity, mechanical rigidity, and signal degradation, particularly under motion or sweat.
Nazmi Alsaafeen, Ioannis Ziogas, Shirina Alsaedi, Mouza Alshehhi, Shahd Almheiri, Adil Rehman, Khulood Al Shehhi, Hani Saleh, Ahsan Khandoker, Charalampos Pitsalidis, Antoun Khawaja, Anna‐Maria Pappa   +11 more
wiley   +1 more source

Accurate automatic tuning circuit for bipolar integrated filters [PDF]

, 1990
An accurate automatic tuning circuit for tuning the cutoff frequency and Q-factor of high-frequency bipolar filters is presented. The circuit is based on a voltage controlled quadrature oscillator (VCO).
Heij, Wim J.A. de, Hoen, Klaas, Seevinck, Evert   +2 more
core   +1 more source

Ultrafast Nonlinear Dynamics of Indium Tin Oxide Nanocrystals Probed via Fieldoscopy

Advanced Science, EarlyView.
The ultrafast nonlinear dynamics of indium tin oxide nanocrystals excited with 1 MHz, 10 fs pulses, at their localized surface plasmon frequency, and near their epsilon‐near‐zero wavelength is probed via fieldoscopy. The study demonstrates fluence‐dependent switching behavior, advancing the understanding of high‐speed optical modulation in plasmonic ...
Andreas Herbst, Anchit Srivastava, Kilian Scheffter, Soyeon Jun, Steffen Gommel, Luca Rebecchi, Sidharth Kuriyil, Andrea Rubino, Nicolò Petrini, Ilka Kriegel, Hanieh Fattahi   +10 more
wiley   +1 more source

Decoding Trap States in Working 2D Perovskite Multi‐Functional Devices

Advanced Science, EarlyView.
Illustration of the photoluminescence spectrum and energy‐level landscape governing trap‐mediated carrier dynamics in 2D F‐PEAI photodetectors. A novel approach capturing dynamic trap occupation and retrapping in devices under operating conditions, directly links defect energetics to carrier transport and enhanced photoresponse in multifunctional ...
Ioannis Leontis, Karl Jonas Riisnaes, Hoi Tung Lam, Rosanna Mastria, Luisa De Marco, Annalisa Coriolano, Steven Hepplestone, Monica Felicia Craciun, Saverio Russo   +8 more
wiley   +1 more source

Hybrid Fourier-domain mode-locked laser for ultra-wideband linearly chirped microwave waveform generation

Nature Communications, 2020
Linearly chirped microwave waveforms with high time-bandwidth products would have important applications but are difficult to achieve. Here the authors generate such a waveform in a photonic setting by implementing a micro-disk resonator as a tunable ...
Jian Tang, Beibei Zhu, Weifeng Zhang, Ming Li, Shilong Pan, Jianping Yao   +5 more
doaj   +1 more source

Analysis of Liquid Crystal Tunable Thin-Film Optical Filters Using Signal Flow Graph Technique

International Journal of Optics, 2021
In this paper, a liquid crystal tunable thin-film optical bandpass filter is studied and analyzed using the signal flow graph technique. This paper investigates an exact form for calculating the transmission coefficients, reflection coefficients, and the
Abedalgany Athamneh, Shadi A. Alboon
doaj   +1 more source