Electrical terminal representation of conductor loss in transformers

1990 ◽  
Vol 5 (4) ◽  
pp. 424-429 ◽  
Author(s):  
J.H. Spreen
Keyword(s):  
Conductor Loss ◽  
Electrical Terminal

Analysis of Characteristic of Microstrip Signal Loss in Course of Signal Transmission

2011 ◽  
Vol 194-196 ◽  
pp. 2229-2232
Author(s):  
Qing Song Xiong ◽  
Zhao Hua Wu ◽  
Pin Chen ◽  
Sheng Zhang
Keyword(s):  
Line Width ◽  
Transmission Lines ◽  
Coupling Effect ◽  
Signal Transmission ◽  
Characteristic Impedance ◽  
Signal Loss ◽  
Scattering Parameters ◽  
Scattering Parameter ◽  
Conductor Loss ◽  
Strip Lines

The effect of loss of transmission line on the transmission signal can’t be ignored in microwave circuits. Based on the theory of loss and microwave network principle, the effect of the width, parallel length and space of transmission lines on the scattering parameters’ insertion loss is analyzed in perspective of scattering parameters of the odd mode and even mode. The simulation results show that: when the other parameters are fixed, both the characteristic impedance and the conductor loss decrease non-linearly with the line width broadening; due to the coupling effect between micro-strip lines, the first trough frequency of the scattering parameter S21 curved line, that is the point the signal energy attenuate most seriously, decreases linearly with line width broadening and increases non- linearly with line spaces broadening.

A Practical Approach to Analyze Copper Surface Roughness Effects with Applications to Stripline Structures

2012 ◽  
Vol 2012 (1) ◽  
pp. 001068-001072
Author(s):  
Xichen Guo ◽  
Ji Chen ◽  
David R. Jackson ◽  
Marina Y. Koledintseva ◽  
James Drewniak ◽  
...  
Keyword(s):  
Surface Impedance ◽  
High Speed ◽  
Propagation Constant ◽  
Practical Method ◽  
Copper Surface ◽  
Metal Foil ◽  
Roughness Effects ◽  
Full Wave ◽  
Surface Wave Propagation ◽  
Conductor Loss

Conductor loss due to the roughened metal foil surface has significant effects on high-speed signals propagation on backplane traces designed for 10+ Gbps network. A practical method to evaluate these effects, including the signal attenuation and the propagation phase velocity, is proposed in this paper. A periodic structure is assumed to model the morphology of the roughness profile. The equivalent surface impedance is extracted from the grating surface wave propagation constant to model the roughness. This modified surface impedance can hence be used in the traditional attenuation constant formula to calculate the actual conductor loss. This approach is validated using both full-wave simulation tool and measurement, and is shown to be able to provide robust result within 0.2 dB/m relative error.

Effect of metallization edge shape on conductor loss of open coplanar waveguide

1990 ◽  
Vol 3 (11) ◽  
pp. 389-391
Author(s):  
Edward L. Barsotti ◽  
Edward F. Kuester ◽  
John M. Dunn
Keyword(s):  
Coplanar Waveguide ◽  
Conductor Loss

scholarly journals Terahertz rectangular waveguides with inserted graphene films biased by light and their quasi-linear electromagnetic modeling

2020 ◽  
Author(s):  
Guennadi A. Kouzaev
Keyword(s):  
Electric Fields ◽  
Iteration Algorithm ◽  
Perturbation Approach ◽  
Current Crowding ◽  
Electromagnetic Modeling ◽  
Graphene Films ◽  
Field Matching ◽  
Rectangular Waveguides ◽  
Sharp Edges ◽  
Conductor Loss

AbstractNovel rectangular waveguides with graphene inserts biased by light are proposed herein. The graphene films short the conductor plates of waveguides and support the localized transverse-electric modes. Their electric fields are parallel to the wide walls of these waveguides, and the eigenmodes have decreased conductor loss. The designs do not involve the conductor and graphene strips with their sharp edges, and the loss associated with the current crowding effect is excluded. The waveguides are treated in the quasi-linear regime using a rigorous field matching method, and the complex dispersion eigenmodal equation is solved using a validated iteration algorithm. At the terahertz frequencies of amplification, where the real part of graphene conductivity is negative, a gain increase is found with the eigenmodal number. This gain can be tuned by the waveguide geometry, dielectric filling, and the level of quasi-Fermi energy. The ideal waveguide theory is corrected using a perturbation approach and the Drude model of surface resistance of waveguide plates.

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