Results 11 to 20 of about 334,526 (272)
IEEE Photonics Journal, 2010 We propose and experimentally demonstrate a photonic approach for the measurement of microwave frequencies with adjustable measurement range and resolution.
Songnian Fu +3 more
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IET Science, Measurement & Technology, 2023 In this paper, an improved two‐step method is presented for the sensitivity analysis of vector network analyzer (VNA) S‐parameter measurements due to the non‐ideal line‐reflect‐match (LRM) calibration standards.
Wei Zhao +5 more
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Propagation Constant Measurement Based on a Single Transmission Line Standard Using a Two-Port VNA
Sensors, 2023 This study presents a new method for measuring the propagation constant of transmission lines using a single line standard and without prior calibration of a two-port vector network analyzer (VNA).
Ziad Hatab +4 more
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Remote Wideband Microwave Frequency Measurement Based on a Single-Passband Microwave Photonic Filter
IEEE Photonics Journal, 2012 A new method for remote wideband microwave frequency measurement utilizing a single-passband microwave photonic filter is proposed, theoretically analyzed, and experimentally demonstrated. The frequencies of the input microwave signals can be measured by
Hongyan Fu, Zuowei Xu, Kun Zhu
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Intelligent Measurement of Coal Moisture Based on Microwave Spectrum via Distance-Weighted kNN
Applied Sciences, 2022 Realizing the rapid measurement of coal moisture content (MC) is of great significance. However, existing measurement methods are time-consuming and damage the original properties of the samples.
Ming Li +5 more
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IET Microwaves, Antennas & Propagation, 2023 In millimetre wave (mmWave) frequency band, radio resource management (RRM) performance is characterised in plane wave conditions using radiated over‐the‐air test method, which is a challenging combination of protocol and radio frequency performance ...
Yu Zhang +4 more
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Harmonic Suppressed Slot Antennas Using Rectangular/Circular Defected Ground Structures
International Journal of Antennas and Propagation, 2012 Two wide rectangle-shaped microstrip-fed 2.6-GHz slot antennas using defected ground structures (DGSs) with a low design complexity are proposed to achieve wideband harmonic suppression.
Mohammad Saeid Ghaffarian +2 more
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A New Approach for Liquid Scanners to Determine Flammable Liquid Concentration in Solutions
Hittite Journal of Science and Engineering, 2021 Strong liquid explosives were obtained by mixing some chemical liquids and these explosives were used in many terrorist attacks in crowded places such as airports, railway stations and shopping malls.
Ebru Efeoğlu, Gürkan Tuna
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Quantum Illumination at the Microwave Wavelengths [PDF]
, 2015 Quantum illumination is a quantum-optical sensing technique in which an entangled source is exploited to improve the detection of a low-reflectivity object that is immersed in a bright thermal background.
Barzanjeh, Shabir +5 more
core +4 more sources
Microwave measurements Part I: Linear Measurements [PDF]
IEEE Instrumentation & Measurement Magazine, 2007 By convention, radio frequency (RF) and microwave frequencies range between 30 MHz and 300 GHz. Conversely, this means their wavelengths range between 10 m and 1 mm. Intense research in radar development during World War II extended the RF spectrum beyond the usual applications in radio communications.
PIROLA, Marco +2 more
openaire +1 more source