Results 101 to 110 of about 2,026,776 (294)

Direct extraction techniques of microwave small-signal model and technological parameters for sub-quarter micron SOI MOSFETs

open access: yesJournal of Telecommunications and Information Technology, 2000
Original extraction techniques of microwave small-signal model and technological parameters for SOI MOSFETs are presented. The characterization method combines careful design of probing and calibration structures, rigorous in situ calibration and a ...
Michel Goffioul   +2 more
doaj   +1 more source

Coating‐Free Nanoscratching for Liquid‐Crystal Alignment on PCB‐Compatible Millimeter‐Wave Reflective Unit Cells

open access: yesAdvanced Materials Technologies, EarlyView.
Direct nanoscratching with a 500 nm diamond lapping film creates groove‐guided liquid‐crystal alignment interfaces on PCB‐compatible Cu‐patterned RF substrates within minutes, eliminating polymer coating and high‐temperature baking. The coating‐free process enables optical/molecular alignment validation and voltage‐programmable 28 GHz reflection‐phase ...
Junseok Ma   +5 more
wiley   +1 more source

Application of multilevel modeling methods in the design of radio-frequency devices of radio-engineering systems

open access: yesФизика волновых процессов и радиотехнические системы, 2017
In this paper, we propose a generalized algorithm for hierarchical multi-level modeling of radio-frequency devices of radio-engineering systems, which allows modeling methods to optimize the principle of radio-frequency devices constructing and its ...
V.A. Kozlov, M.M. Ivoylova
doaj  

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja   +9 more
wiley   +1 more source

Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators

open access: yesAdvanced Materials Technologies, EarlyView.
Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich   +2 more
wiley   +1 more source

Large-Signal Characterization of Microwave Power Devices

open access: yes, 2005
This article presents an overview of nonlinear measurement techniques for microwave power devices. Several useful measurement techniques available in Europe are described.
Charbonniaud, Christophe   +6 more
core   +4 more sources

Microwave device there is designing on base of the theorem about cut-in alike reactive symmetrical quadrupoles

open access: yesФизика волновых процессов и радиотехнические системы, 2014
The microwave devices structured syntheses with use shunting quadrupoles is considered in given to article. The Theorem about cascade cut-in reactive symmetrical quadrupoles happens to here.
V.A. Neganov, I.A. Petrov
doaj  

Low‐Pressure Plasma‐Based Wrinkling of PDMS and Machine Learning‐Driven Property Engineering

open access: yesAdvanced Materials Technologies, EarlyView.
Wrinkled surfaces are well‐suited for controlled surface deformations in the µm range. The key challenge is the relation between the resulting wrinkle features and the necessary process conditions. Machine learning techniques have solved the prediction and inverse design problems for various preparation conditions, opening a precisely controlled ...
Fabian Kopsch   +7 more
wiley   +1 more source

Broadband shunting structures and their using when designing microwave devices

open access: yesФизика волновых процессов и радиотехнические системы, 2016
The microwave devices structured syntheses with use shunting quadrupoles is considered in given to article. The Theorem about cascade cut-in reactive symmetrical quadrupoles happens to here.
V.A. Neganov, I.A. Petrov
doaj  

Surrogate‐Optimized Flow‐Guided Miniature Condenser for Rapid Exhaled Glucose Detection

open access: yesAdvanced Materials Technologies, EarlyView.
A surrogate‐optimized miniature condenser guides humid exhaled flow toward cold surfaces to accelerate exhaled breath condensate collection. By improving vapor access within a compact footprint, the design increases sample yield. This enables post‐collection enrichment and rapid colorimetric glucose detection from dilute exhaled biomarkers within a 5 ...
Yiming Thomas Lu   +6 more
wiley   +1 more source

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