Results 11 to 20 of about 59,002 (263)
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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IEEE Journal of Microwaves, 2021 The unique properties of microwaves make them useful in many diverse applications across a wide range of fields, spanning much of engineering and science. In the chemical sciences, microwaves provide a toolkit of electric and magnetic effects with which,
Daniel R. Slocombe, Adrian Porch
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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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All-Optical Pulsed Signal Doppler Frequency Shift Measurement System
IEEE Photonics Journal, 2021 A simple and all-optical Doppler frequency shift (DFS) measurement system is presented. It is based on a dual-drive Mach Zehnder modulator (DDMZM) driven by a transmitted signal and an echo signal received by an antenna.
Chongjia Huang, Erwin H. W. Chan
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Intercalibration of FY-3D MWTS Against S-NPP ATMS Based on Microwave Radiative Transfer Model
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 Accurate and stable in-orbit radiometric calibration of a satellite instrument is fundamental to Earth geophysical parameter estimation. This article addresses the intercalibration of the microwave temperature sounder (MWTS) on the Chinese second ...
Xian-Hui Su, Geng-Ming Jiang
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Optical Fiber Displacement Sensor Based on Microwave Photonics Interferometry
Sensors, 2018 An optical fiber displacement sensor based on the microwave photonics interferometric (MWPI) method is proposed and experimented, which provides an ideal solution for large range displacement measurement with high resolution.
Hao Dong +4 more
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New Technique for Improving Modal Filter Performance by Using an Electromagnetic Absorber
IEEE Access, 2022 This paper presents a novel technique for improving modal filter (MF) performance by using an electromagnetic absorber which shows a significant improvement in attenuation of ultra-wideband interference. The authors analyzed the effect of the absorber on
Yevgeniy S. Zhechev +2 more
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IEEE Photonics Journal, 2017 We propose and experimentally demonstrate photonic measurement of microwave frequency by utilizing an optomechanical microring resonator (MRR). The pump powers injected into the MRR would result the resonance red-shifts based on nonlinear effects. In the
Li Liu, Huaqing Qiu, Zhi Chen, Zhihua Yu
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Precise measurement of complex permittivity of materials for telecommunications devices
Journal of Telecommunications and Information Technology, 2001 In order to obtain precise complex permittivity of the dielectric materials obtained from the perturbation method a correction curve is made using the electromagnetic field simulator which applies transmission line modeling (TLM) method.
Takayuki Nakamura, Yoshio Nikawa
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