Results 41 to 50 of about 241,717 (322)

Design of Low-SAR High-Efficiency Terminal Antenna Using Magnetic Field Homogenization

Micromachines
A low-SAR high-efficiency terminal antenna based on the magnetic field homogenization is proposed in this paper. Starting from the spatial correlation between the antenna’s near-field tangential magnetic field hotspots and SAR distribution, the influence
Sihan Xiao, Yong-Chang Jiao, Ziming Lv, Liupeng Zan, Zibin Weng   +4 more
doaj   +1 more source

Adaptive radar detection

Electronics Letters, 1985
In the letter a new adaptive procedure for the detection of a radar target in clutter is described. The procedure is based on the development of linear models for the two hypotheses H0 and H1. Under hypothesis H0, there is no target present, and the received signal is modelled as a regressive process.
Qi-Tu Zwang, S. Haykin
openaire   +1 more source

Radar Target Detection with CNN

2021 29th European Signal Processing Conference (EUSIPCO), 2021
Target detection is a fundamental radar application that is traditionally carried out by Constant False Alarm Rate (CFAR) detectors. This paper proposes a Convolutional Neural Network (CNN) based detector (RadCNN) to replace the standard CFAR detectors for a typical pulsed Doppler radar.
openaire   +2 more sources

Structural Antennas for 3cm Radar Onboard Multi-Rotor UAV [PDF]

, 2017
A series of 3cm amateur band radar antennas suitable for installation on a cinematic grade multi-rotor UAV were considered. A wideband open waveguide mouth antenna was developed that can be made from the existing arms of a multi-rotor UAV without any ...
Gray, D., Le Kernec, J.
core   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Design and Analysis of Ultra-Thin Broadband Transparent Absorber Based on ITO Film

Micromachines
In this paper, we design an ultra-thin broadband transparent absorber based on indium tin oxide (ITO) film, and we choose polymethyl methacrylate (PMMA) high-transmittance dielectric sheet instead of the traditional dielectric sheet and polyethylene ...
Zibin Weng, Yahong Li, Youqian Su, Zechen Li, Jingnan Guo, Ziming Lv, Chen Liang   +6 more
doaj   +1 more source

Numerical analysis of microwave detection of breast tumours using synthetic focussing techniques [PDF]

, 2004
Microwave detection of breast tumours is a non-ionising and potentially low-cost and more certain alternative to X-ray mammography. Analogous to ground penetrating radar (GPR), microwaves are transmitted using an antenna array and the reflected signals ...
Benjamin, R, Craddock, IJ, Leendertz, J, Nilavalan, R, Preece, A   +4 more
core   +1 more source

Exploiting the Functionality of Cerium Oxide‐Modified Carbon Nanohorns Catalysts Toward Enhanced CO2 Reduction Performance

Advanced Functional Materials, EarlyView.
A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice, Michele Cacioppo, Miriam Marchi, Miriam Moro, Francesco Paolucci, Marcella Bonchio, Maurizio Prato, Giovanni Valenti, Michele Melchionna, Paolo Fornasiero   +9 more
wiley   +1 more source

A TM₀₁-TE₁₁ Circular Waveguide Mode Converter on the Basis of Dielectric Filling

Micromachines
In this paper, a dielectric-filled circular waveguide TM01-TE11 mode converter is proposed, which has high conversion efficiency and a wide operating bandwidth.
Zibin Weng, Ziming Lv, Liupeng Zan, Sihan Xiao, Chen Liang   +4 more
doaj   +1 more source

Empirical Comparison of Chirp and Multitones on Experimental UWB Software Defined Radar Prototype [PDF]

, 2012
This paper proposes and tests an approach for an unbiased study of radar waveforms' performances. Using the ultrawide band software defined radar prototype, the performances of Chirp and Multitones are compared in range profile and detection range.
Denoulet, J., Garda, P., Le Kernec, J., Romain, O.   +3 more
core