Results 101 to 110 of about 185,245 (299)
Pattern Synthesis of Dual-band Shared Aperture Interleaved Linear Antenna Arrays [PDF]
, 2014 This paper presents an approach to improve the efficiency of an array aperture by interleaving two different arrays in the same aperture area. Two sub-arrays working at different frequencies are interleaved in the same linear aperture area. The available
Ding, J., Guo, C. J., Guo, H.
core +1 more source
Impedance matching and emission properties of optical antennas in a nanophotonic circuit
, 2008 An experimentally realizable prototype nanophotonic circuit consisting of a receiving and an emitting nano antenna connected by a two-wire optical transmission line is studied using finite-difference time- and frequency-domain simulations.
Biagioni, Paolo +3 more
core +1 more source
On the Efficiency of Capacitively Loaded Frequency Reconfigurable Antennas
International Journal of Distributed Sensor Networks, 2013 The design of a reconfigurable antenna that can be fine tuned to address future communication systems is proposed. The design consists of a capacitively loaded patch antenna for nowadays smartphone platforms. The antenna is narrowband and can be fine tuned over the range (700 MHz–960 MHz).
Samantha Caporal Del Barrio +1 more
openaire +3 more sources
Advanced Engineering Materials, EarlyView.A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley +1 more source
A High-Efficiency Compact Planar Antenna for ISM Wireless Systems
International Journal of Antennas and Propagation, 2017 A novel high-efficiency compact planar antenna at 433 MHz with minimized size and low-cost and easy to integrate into the ISM wireless applications is designed, fabricated, and measured.
Tao Zhou +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Impedance Matching Antenna-Integrated High-Efficiency Energy Harvesting Circuit
Sensors, 2017 This paper describes the design of a high-efficiency energy harvesting circuit with an integrated antenna. The circuit is composed of series resonance and boost rectifier circuits for converting radio frequency power into boosted direct current (DC ...
Yuharu Shinki +3 more
doaj +1 more source
Broadband RCS Reduction of Microstrip Patch Antenna Using Bandstop Frequency Selective Surface [PDF]
, 2013 In this article, a simple and effective approach is presented to reduce the Radar Cross Section (RCS) of microstrip patch antenna in ultra broad frequency band.
Cao, X. Y. +4 more
core +1 more source