Results 41 to 50 of about 1,247,246 (231)

Wideband planar dipole based on dual-layer artificial magnetic conductor

open access: yesThe Journal of Engineering, 2019
A wideband planar dipole based on dual-layer artificial magnetic conductor (AMC) is designed. First, the size of dual-layer AMC is reduced by more than half, and the in-phase band is wider than the single-layer AMC.
Suyang Shi   +3 more
doaj   +1 more source

Sea Spike Suppression Method Based on Optimum Polarization Ratio in Airborne SAR Images

open access: yesSensors, 2021
In the condition of ocean observation for high-resolution airborne synthetic aperture radar (SAR), sea spikes will cause serious interference to SAR image interpretation and marine target detection. In order to improve the ability of target detection, it
Yawei Zhao   +4 more
doaj   +1 more source

Microwave pyrolysis of oil palm fibres [PDF]

open access: yes, 2010
Malaysia and Indonesia are generating millions of ton of oil palm fibres (OPF) from their oil palm mills as biomass solid wastes which needs proper waste utilization application.
Ani, Farid Nasir, Arshad Adam, Salema
core  

Microwave spectroscopy on a double quantum dot with an on-chip Josephson oscillator

open access: yes, 2000
We present measurements on microwave spectroscopy on a double quantum dot with an on-chip microwave source. The quantum dots are realized in the two-dimensional electron gas of an AlGaAs/GaAs heterostructure and are weakly coupled in series by a ...
  +9 more
core   +1 more source

Uncoupled Digital Radars Creating a Coherent Sensor Network

open access: yesIEEE Journal of Microwaves
Radar networks offer the possibility to overcome the limitations of single sensors. However, without coherent signal processing, the full potential of radar networks cannot be exploited.
Julian Aguilar   +4 more
doaj   +1 more source

Measuring Ocean Surface Current in the Kuroshio Region Using Gaofen-3 SAR Data

open access: yesApplied Sciences, 2021
The Kuroshio is the strongest warm current in the western North Pacific, which plays a crucial role in climate and human activities. In terms of this, the accurate acquisition of ocean surface current velocity and direction in the Kuroshio region is of ...
Yan Li   +4 more
doaj   +1 more source

A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays

open access: yesIEEE Open Journal of Antennas and Propagation
In order to ensure high-resolution angle estimation results, antenna apertures of radar sensors become large relative to the wavelength. To prevent high sidelobe levels, the number of antennas is constantly increased, generally through the employment of ...
Matthias Linder   +4 more
doaj   +1 more source

Design of Compact Quasi-Elliptic Bandpass Filters Based on Coaxial Inset Resonators

open access: yesIEEE Access, 2023
This article reports a novel inset resonator configuration for coaxial filter applications with quasi-elliptic responses. The design and analysis of the inset resonator are discussed in detail and accurately modeled as a capacitively-loaded stepped ...
Abdulrahman Widaa   +2 more
doaj   +1 more source

Bidirectional interconversion of microwave and light with thin-film lithium niobate [PDF]

open access: gold, 2021
Yuntao Xu   +9 more
openalex   +1 more source

The bulk Josephson responce of the d-g-wave cuprate superconductor

open access: yes, 1997
We consider the implications of the small Fermi surface for the ab-plane microwave absorption. The small Fermi surface results in two superconducting condensates.
Aebi   +24 more
core   +1 more source

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