Results 1 to 10 of about 1,593,167 (326)
Vacuum-Seal Waveguide Feedthrough for Extended W-Band 67–116 GHz
IEEE Journal of Microwaves, 2023 This article describes the design and performance of a vacuum-seal waveguide feedthrough with ultrawide RF band 67–116 GHz. We describe first the initial drivers behind the chosen design, then we present the results of the numerical simulations ...
Igor Lapkin +6 more
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A Tri-Band Cooled Receiver for Geodetic VLBI
Sensors, 2021 This paper shows a simultaneous tri-band (S: 2.2–2.7 GHz, X: 7.5–9 GHz and Ka: 28–33 GHz) low-noise cryogenic receiver for geodetic Very Long Baseline Interferometry (geo-VLBI) which has been developed at Yebes Observatory laboratories in Spain.
José A. López-Pérez +16 more
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Time-optimal algorithms focused on the search for random pulsed-point sources [PDF]
Компьютерная оптика, 2019 The article describes methods and algorithms related to the analysis of dynamically changing discrete random fields. Time-optimal strategies for the localization of pulsed-point sources having a random spatial distribution and indicating themselves by ...
Aleksandr Reznik +4 more
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Journal of Communications Software and Systems, 2021 In a passive radar system, localizing a target in Cartesian space is achieved by using one of the following bistatic geometries: multiple non-cooperative transmitters with one receiver, one non-cooperative transmitter with multiple receivers, or one non ...
Anas Mahmoud Almanofi +2 more
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发电技术, 2021 To explore the influence of heat transfer fluids on the heat transfer characteristics of solar receivers, the heat transfer characteristics of conical cavity receivers with supercritical CO2 and compressed air as heat transfer fluids were compared and ...
Ding WANG +3 more
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IEEE Access, 2021 This paper presents an area- and energy- efficient digital sub-sampling clock and data recovery (CDR) with combined adaptive equalizer and self-error corrector (SEC). Using the digitized phase difference between the incoming data and the full-rate output
Yoonjae Choi +6 more
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Study on cascade noise figure of receivers with down converter
Dianzi Jishu Yingyong, 2021 According to the definition of noise figure，this paper deduces the cascade noise figure formula of receivers with mixers. By using this formula，it is easy to calculate and analysis the system noise figure affected by the device noise figure, gain and ...
Zhang Guangxian
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A Low Noise Receiver for Submillimeter Astronomy [PDF]
, 1986 A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning
Miller, R. E. +3 more
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Toss differences between the slice serve and the kick serve in tennis
Acta Gymnica, 2015 Background: Pre-contact information of servers' motion is important for receiving players in tennis. Objective: The aim of this study is to examine whether serving players use the same ball toss for kick serve (KS) and slice serve (SS) at two different ...
Jan Carboch, Vladimír Süss
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Harmonic and reactive behavior of the quasiparticle tunnel current in SIS junctions
AIP Advances, 2016 In this paper, we show theoretically and experimentally that the reactive quasiparticle tunnel current of the superconductor tunnel junction could be directly measured at specific bias voltages for the higher harmonics of the quasiparticle tunnel current.
H. Rashid +3 more
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