Results 221 to 230 of about 30,414,319 (280)
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A Unified Theory for $S$-Parameter Uncertainty Evaluation
IEEE Transactions on Microwave Theory and Techniques, 2012An analytical approach to compute the uncertainty of multiport scattering parameter measurements is presented. First, the various uncertainty causes from the noise to the standard definitions are modeled and characterized, then the uncertainty propagation up to the device-under-test measurement is computed.
Garelli M., FERRERO, ANDREA PIERENRICO
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Calibrated and Frequency Traceable D-Band FMCW Radar for VNA-like S-Parameter Measurements
IEEE Radio and Wireless Symposium, 2022In this paper a D-band frequency modulated continuous wave (FMCW) radar system and a signal processing chain for vector network analyzer(VNA)-like S-parameter measurements are presented.
T. Jaeschke +3 more
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Accurate S-Parameter Modeling and Material Characterization in Quasi-Optical Systems
IEEE Transactions on Terahertz Science and Technology, 2022In the article, we present an analytical model of a beam interaction with a sample in a quasi-optical system suitable for high accuracy S-parameter prediction and material extraction. Instead of assuming a plane wave illumination of the sample, our model
M. Mrnka, R. Appleby, E. Sáenz
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A Benchmark Test Suite for Antenna S-Parameter Optimization
IEEE Transactions on Antennas and Propagation, 2021Performance evaluation of optimization-based antenna design methods is essential. It is desirable to develop an efficient test suite with characteristics of antenna structures to replace the high computational cost electromagnetics (EM)-based evaluation.
Zhen Zhang +4 more
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Applied Power Electronics Conference, 2021
Parasitic inductance of power modules is one nonnegligible part of inductance on converters’ current commutation loop (CCL). Larger CCL inductance leads to higher switching oscillation, voltage overshoot, electromagnetic interference (EMI), and larger ...
Zhongjing Wang, Zhao Yuan, Yue Zhao
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Parasitic inductance of power modules is one nonnegligible part of inductance on converters’ current commutation loop (CCL). Larger CCL inductance leads to higher switching oscillation, voltage overshoot, electromagnetic interference (EMI), and larger ...
Zhongjing Wang, Zhao Yuan, Yue Zhao
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On Peculiarities of $S$-Parameter Measurements
IEEE Transactions on Instrumentation and Measurement, 2005Extracting quantities, such as the propagation factor or the characteristic impedance of a transmission line based on measured S-parameters, can be more involved than expected. Experience teaches that even if the S-parameter measurements look smooth and are of good quality, the derived quantities can contain large spikes that tend to grow when ...
Rolain, Yves +3 more
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Measurement technique for the extraction of differential S-parameters from single-ended S-parameters
27th International Spring Seminar on Electronics Technology: Meeting the Challenges of Electronics Technology Progress, 2004., 2005With the increasing implementation of communication devices and systems in the RF/low microwave ranges, along with the usage of differential signaling schemes, it has become necessary to develop practical methods to suitably characterize the operation of these devices. This paper describes a method of determining the four-port differential S-parameters
K. Vaz, M. Caggiano
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Increasing S Parameter of Interleavers
2007 International Symposium on Signals, Circuits and Systems, 2007An algorithm to increase the S parameter up to a value allowed by the reasonable generating of a S -random interleaver is presented. The method is appropriate for both random and determinist interleavers, as Welch-Costas, Takeshita-Costello or the one given by the UMTS standard.
Lucian Trifina +2 more
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International Journal of Quantum Chemistry, 2001
AbstractTwo INDO/S parameter sets, designed for use in conjunction with 6s and 6s+6p+5d basis sets, have been determined for gold. These basis sets are comprised of Slater‐type orbitals with exponents chosen to best reproduce the radial expectation values r, r2, and r3 of the gold Hartree–Fock atomic orbitals.
Warwick A. Shapley +2 more
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AbstractTwo INDO/S parameter sets, designed for use in conjunction with 6s and 6s+6p+5d basis sets, have been determined for gold. These basis sets are comprised of Slater‐type orbitals with exponents chosen to best reproduce the radial expectation values r, r2, and r3 of the gold Hartree–Fock atomic orbitals.
Warwick A. Shapley +2 more
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Nonlinear S-Parameters Inversion for Stroke Imaging
IEEE Transactions on Microwave Theory and Techniques, 2021Stroke identification by means of microwave tomography requires a very accurate reconstruction of the dielectric properties inside patient’s head. This is possible when a precise measurement system is combined with a full nonlinear inversion method. In this article, the inversion of S-parameter data collected in a metallic chamber is performed with a ...
Alessandro Fedeli +5 more
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