Results 31 to 40 of about 320,379 (193)
Design of a Circularly-Polarized UHF Antenna for Partial Discharge Detection
IEEE Access, 2020 In this work, a circularly-polarized ultra-high frequency (UHF) partial discharge (PD) antenna is proposed to detect the PD in 0.6 GHz - 1.7 GHz. The proposed PD antenna consists of an Archimedean spiral antenna, a balun, and a cavity.
Seungyong Park, Kyung-Young Jung
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Design and analysis of ultra-wideband antennas for transient field excitations [PDF]
Advances in Radio Science, 2016 This work addresses the design of two ultra-wideband antennas for the application of transient field measurements that are characterized by frequency spectra that typically range from a few MHz to several GHz.
M. Kotzev, M. Kreitlow, F. Gronwald
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An Unbalanced Sinuous Antenna for Near-Surface Polarimetric Ground-Penetrating Radar
IEEE Open Journal of Antennas and Propagation, 2020 Sinuous antennas are capable of producing ultra-wideband radiation with polarization diversity. This capability makes the sinuous antenna an attractive candidate for UWB polarimetric radar applications. Additionally, the ability of the sinuous antenna to
Dylan A. Crocker, Waymond R. Scott
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, 2018 This article shows the different types of broadband antennas, their main characteristics and disadvantages are also ...
Petrische, D., Ivanova, K.
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Investigation of Flexible Textile Antennas and AMC Reflectors
International Journal of Antennas and Propagation, 2012 In this paper, two different methods for fabric characterization are presented: a single frequency method and a broadband method. Felt and denim fabrics are characterized, and patch antennas are designed using these substrates to test both methods ...
M. Mantash +3 more
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IET Microwaves, Antennas & Propagation, 2023 In this study, a compact wideband circularly polarised Multiple Input Multiple Output (MIMO) antenna with the two parasitic elements is proposed. The printed monopole antenna for wideband circular polarisation proposed in authors' previous study is used ...
Zin Mar Phyo +2 more
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Comparison of precoding methods for broadband MIMO systems [PDF]
, 2009 In this paper we investigate non-linear precoding solutions for the problem of broadband multiple-input multipleoutput (MIMO) systems. Based on a broadband singular value decomposition (BSVD) we can decouple a broadband MIMO channel into independent ...
Alhanafy, W.E.A.E., Weiss, S.
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Физика волновых процессов и радиотехнические системыBackground. The main properties and characteristics of focused antenna systems using narrowband signals are known and generally coincide with the properties of broadband discrete antennas with a symmetric spectrum.
Denis A. Vedenkin
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Adaptive frequency-domain equalization for single-carrier MIMO systems [PDF]
, 2004 Channel estimation and tracking pose real problems in wideband single-carrier wireless communication systems employing multiple transmit and receive antennas. An alternative to estimating the channel is to adaptively equalize the received symbols.
Coon, J +7 more
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International Journal of Antennas and PropagationIn this paper, we propose an improved adaptive frequency sweep strategy based on the asymptotic waveform evaluation (AWE) technique for simulating broadband antennas across a wide frequency range.
Zhijun Cai +7 more
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