Results 11 to 20 of about 73,095 (305)
Accurate characteristic impedance measurement on silicon [PDF]
1998 IEEE MTT-S International Microwave Symposium Digest (Cat. No.98CH36192), 1998 This paper presents a new method that accurately determines the characteristic impedance of planar transmission lines printed on lossy dielectrics even when contact-pad capacitance and conductance are large. We demonstrate the method on a coplanar waveguide fabricated on fused silica and a microstrip line fabricated on a highly conductive silicon ...
Williams, Dylan F. +2 more
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Characteristic Impedance Modeling of Nuclear Power Instrumentation and Control Cable Shield Breakage
EnergiesNuclear Instrumentation and Control (I&C) cables laying in a complex environment are prone to shield damage. And, the traveling wave reflection method can be used to detect and locate damage using the characteristic impedance change caused by I&C cable ...
Hua Tu +5 more
doaj +2 more sources
Impedance characteristics of quantum-well lasers [PDF]
IEEE Photonics Technology Letters, 1994 We derive theoretical expressions for the impedance of quantum-well lasers below and above threshold based on a simple rate equation model, These electrical laser characteristics are shown to be dominated by purely electrical parameters related to carrier capture/transport and carrier re-emission, The results of on-wafer measurements of the impedance ...
Weisser, Stephan +5 more
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Maxwell's mixing equation revisited: characteristic impedance equations for ellipsoidal cells. [PDF]
Biophys J, 2015 We derived a series of, to our knowledge, new analytic expressions for the characteristic features of the impedance spectra of suspensions of homogeneous and single-shell spherical, spheroidal, and ellipsoidal objects, e.g., biological cells of the ...
Stubbe M, Gimsa J.
europepmc +2 more sources
IEEE Access, 2021 This paper proposes four methods and empirical formulas of adjusting characteristic impedances for thin-metal mesh transmission lines. The characteristic impedances are discretely adjusted by changing the number and the size of unit meshes, which ...
Jin Myeong Heo +3 more
doaj +1 more source
Driving point impedance characteristics of the head [PDF]
Journal of Biomechanics, 1971 The mechanical impedance of the human and monkeytMoc~crc.o ~nulurtu I head u a\ determined over the frequency range 30-1X)00 Hz Miniature accelerometers and pressure transducers were placed in the brain to measure its response to vibration at constant g-levels and variable frequency. The maximum acceleration studied was 20 g's, /rl rirro experiments on
Stalnaker, Richard L. +2 more
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Complex modes in boxed microstrip [PDF]
, 1988 A method is described for obtaining the propagation coefficients and field patterns of a large number of modes for microstrip with a minimum of computational effort.
Railton, CJ, Rozzi, T
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Probe-Dependent Residual Error Analysis for Accurate On-Wafer MOSFET Measurements up to 110 GHz
IEEE Journal of the Electron Devices Society, 2023 Advances in CMOS technology have enabled MOSFET with cutoff and maximum oscillation frequencies (ft and fmax) in the 400 GHz range, thus opening the path to CMOS-based applications at millimeter-wave (mm-wave) and sub-THz frequencies.
Lucas Nyssens +4 more
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Analysis of Sound Absorbing Properties of Activated Carbon Fiber Felts Based on Density Change
Nantong Daxue xuebao. Ziran kexue ban, 2021 In order to study the sound absorbing properties of activated carbon fiber felts, three kinds of activated carbon fiber felts with different densities were selected, and the double channel acoustic analyzer with impedance tube was used to test the ...
SHEN Yue, YAN Xuefeng, LIU Qixia
doaj +1 more source
A multiplexed impedance analyzer for characterizing polymer-coated QCM sensor arrays [PDF]
, 2006 This paper describes the development and evaluation of a custom-built impedance analyzer, which uses a multiplexing bridge circuit to characterize an array of polymer-coated quartz crystal microbalance (QCM) sensors.
D.R.S. Cumming +17 more
core +1 more source