Results 51 to 60 of about 106,069 (300)
Fabrication of carbon film composites for high-strength structures [PDF]
, 1972 Physical and mechanical properties of fiber composite materials consisting of carbon films are described. Application of carbon film structural composites for constructing microwave filters or optical instruments is proposed.
Lippman, M., Preiswerk, P. R.
core +1 more source
, 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 +5 more
core +1 more source
A fundamental limit on the performance of geometrically-tuned planar resonators [PDF]
, 2011 Geometric frequency tuning in planar electromagnetic resonators is common in many applications. It comes, however, at a penalty in the resonance quality, Q0. The literature traces the causes of such penalty often in terms of the shortcomings in the added
Beach, MA, Morris, KA, Naji, A, Warr, PA
core +2 more sources
Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges
Advanced Functional Materials, EarlyView.Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley +1 more source
Low power CMOS iImage sensor for face recognition [PDF]
, 2020 Imaging system is suitable for different purposes, depending upon their final application. Digital cameras, camcorders, webcams, security cameras or infrared (IR) cameras are well-known imaging systems.
Chan, Kit Heng, Ruslan, Siti Hawa
core
Novel Functional Materials via 3D Printing by Vat Photopolymerization
Advanced Functional Materials, EarlyView.This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov +3 more
wiley +1 more source
Tunable metamaterial bandstop filter based on ferromagnetic resonance
AIP Advances, 2015 Tunable wideband microwave bandstop filters have been investigated by experiments and simulations. The negative permeability is realized around the ferromagnetic resonance frequency which can be influenced by the demagnetization factor of the ferrite ...
Qingmin Wang +3 more
doaj +1 more source
Thermal Frequency Drift of 3D Printed Microwave Components
Metals, 2020 Fabrication of microwave slot array antennas and waveguide bandpass and notch filters using 3D printing has significant advantages in terms of speed and cost even for parts with high mechanical complexity.
Gregory Peter Le Sage
doaj +1 more source
Genetic Algorithm Applied to Discrete Optimization of Band-Pass Microwave Filter
Telfor Journal, 2021 We propose a design approach for band-pass microwave filters based on optimization of discrete-valued parameters of filters using an implementation of (1 + (λ, λ)) genetic algorithm.
D. Ninković, D. Olćan
doaj +1 more source
Guest editorial for the special issue on software-defined radio transceivers and circuits for 5G wireless communications [PDF]
, 2016 Yichuang Sun, Baoyong Chi, and Heng Zhang, Guest Editorial for the Special Issue on Software-Defined Radio Transceivers and Circuits for 5G Wireless Communications, published in IEEEE Transactions on Circuits and Systems II: Express Briefs, Vol.
Chi, Baoyong, Sun, Yichuang, Zhang, Heng
core +2 more sources