Results 181 to 190 of about 11,483 (315)
Low‐Profile, High‐Gain GRIN RF Lenses via Multi‐Material Vat Photopolymerization
Advanced Functional Materials, EarlyView.We investigate the opportunity of leveraging multi‐material vat photopolymerization printing to manufacture intricate lenses exhibiting permittivity gradients that can increase signal gain in transmitted radiofrequency signals in the X‐ and Ku‐bands. Lenses produced with more distinct low‐loss materials (up to 5) can deliver an 18 dB signal gain with a
Lawrence Romangsuriat +3 more
wiley +1 more source
Modeling and design of compact planar antennas
, 2008 There is a demand for compact, low profile, and wideband antennas for modem wireless devices. The purpose of this dissertation is to develop two such antennas.
Alam, Muhammad Zulfiker.
core
Dual Polarization 2 × 2 Array Ku-Band Antenna with Improved Polarization Purity. [PDF]
Sensors (Basel)Lee TH +5 more
europepmc +1 more source
Advanced Functional Materials, EarlyView.Co‐delivery of electrosprayed EDOT and oxidant enables bulk oxidative polymerization during layer‐by‐layer fabrication, creating stable, highly conductive 3D PEDOT structures. This Atomized Oxidative Polymerization (AOP) overcomes the surface deposition‐only and matrix‐limited conductivity of conventional Vapor Phase Polymerization (VPP) and PEDOT:PSS ...
Tazdik Patwary Plateau +2 more
wiley +1 more source
Next-Generation Biomedical Microwave Antennas: Metamaterial Design and Advanced Printing Manufacturing Techniques. [PDF]
Sensors (Basel)Koutsoupidou M, Karanasiou IS.
europepmc +1 more source
Advanced Functional Materials, EarlyView.A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon +10 more
wiley +1 more source
Transmission line models of planar slot antennas
, 2019 We propose a systematic approach to describe planar slot antennas, embedded in generic stratified media. An equivalent transmission line model for the slot is proposed, based on a spectral domain analysis. First, we introduce a method of moments solution
Neto, A. +5 more
core
Review of Thermally Activated Twisted Coiled Polymer Actuators: A Materials Science Perspective
Advanced Functional Materials, EarlyView.Thermally activated twisted and coiled polymer actuators (TCPAs) combine lightweight design, large deformation, and scalable fabrication for soft robotic and wearable applications. This review connects polymer structure, processing history, helix geometry, and thermomechanical characterization to actuator performance, highlighting current challenges in
Nadja Schenk +3 more
wiley +1 more source
New methods to reduce leakage errors in planar near-field measurements
, 2011 This paper describes two methods to cancel the effect of two kinds of leakage signals which may be presented when an antenna is measured in a planar near-field range.
Cano Facila, Francisco Jose +2 more
core
Planar Microwave Sensing Technology for Soil Monitoring. [PDF]
Sensors (Basel)Alduwish S +4 more
europepmc +1 more source