Results 31 to 40 of about 1,855 (196)
Antenna layout and EMC simulation of tethered multi rotor UAV communication system
Dianzi Jishu YingyongThis paper designs an antenna layout for tethered multi rotor UAV communication system，conducts EMC simulation analysis between antennas using FEKO software, and conducts actual installation and flight test.
Cheng Xiaojie, Dai Yu
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Investigation of ducts as a “radar pinhole” for detecting objects through a wall [PDF]
, 2016 There is a continuing interest in the through-the-wall capabilities of radar. It has been found that walls behave as a low-pass medium, and therefore through-the-wall radar has been restricted to frequencies in the low GHz range.
Whitelonis, Nicholas John
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IET Microwaves, Antennas & Propagation, 2022 An efficient modal expansion technique for scattering by a circular cavity with an arbitrary arc in a perfect electric conductor is developed. In contrast to the existing methods proposed for a shallow or semi‐circular cavity, the proposed method can be ...
Mehdi Bozorgi
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Modeling radiated emissions through shielding boxes based on tangential electrical field samplings over openings [PDF]
, 2013 published_or_final_versio
Jiang, L, LI, P
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A new hybrid method for the analysis of surrounded antennas mounted on large platforms [PDF]
, 2014 International audienceAn efficient technique to provide fast and accurate analysis of wide-band surrounded antennas mounted on electrically large platforms is presented and validated in this paper. The hybrid method combines Dual-Grid FDTD (DG-FDTD) with
Gillard, Raphaël +5 more
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Poles Extraction of Radar Target Based on Narrowband Frequency Response Approximation
MATEC Web of Conferences, 2017 Pole is the most important feature of radar target in resonance region, and it is attitude insensitive. The poles extraction requires UWB (ultra-wideband) late-time response signal or frequency response data, which is difficult to achieve through general
Xing Xuran, Zhao Hongzhong, Jia Xin
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A Super Wideband Directional Compact Vivaldi Antenna for Lower 5G and Satellite Applications
International Journal of Antennas and Propagation, 2021 In this paper, a super wide band (SWB) Vivaldi antenna has been proposed for lower 5G bands in Sub-6 GHz and satellite applications (S, C, X, Ku, and K band) using various performance improvement techniques.
Liton Chandra Paul, Md. Mohiminul Islam
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IEEE Access, 2023 This work is concerned with a detailed study of an active antenna, which can serve as a prototype of a phased array antenna element for a future lunar very-low-frequency (VLF) radio telescope operating in the frequency range of 1–30 MHz.
Peter L. Tokarsky +2 more
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Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.Abstract The MIST experiment aims to detect the cosmological 21‐cm signal through sky observations at 25–125 MHz using a wide‐beam antenna. The antenna is mounted above the soil and the beam characteristics are highly dependent on the soil's electrical properties.
I. Hendricksen +15 more
wiley +1 more source
Toraldo’s Composed Pupil: A Theoretical Analysis of the Near Field
OpticsOver the years, there has been much speculation to understand whether (and how) it was possible to go below the diffraction limit. An advance in knowledge was achieved with the development of microwave techniques. In fact, more than fifty years after the
Daniela Mugnai +3 more
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