rfckt.parallelplate class

Package: rfckt

Parallel-plate transmission line

Syntax

h = rfckt.parallelplate
h = rfckt.parallelplate('Property1',value1,'Property2',value2,...)

Description

Use the parallelplate class to represent parallel-plate transmission lines that are characterized by line dimensions and optional stub properties.

A parallel-plate transmission line is shown in cross-section in the following figure. Its physical characteristics include the plate width w and the plate separation d.

h = rfckt.parallelplate returns a parallel-plate transmission line object whose properties are set to their default values.

h = rfckt.parallelplate('Property1',value1,'Property2',value2,...) returns a parallel-plate transmission line object, h, with the specified properties. Properties that you do not specify retain their default values.

Properties

AnalyzedResultComputed S-parameters, noise figure, OIP3, and group delay values
EpsilonRRelative permittivity of dielectric
LineLengthParallel-plate line length
LossTangentTangent of loss angle
MuRRelative permeability of dielectric
NameObject name
nPortNumber of ports
SeparationDistance between plates
SigmaCondConductor conductivity
StubModeType of stub
TerminationStub transmission line termination
WidthTransmission line width

Methods

analyzeAnalyze circuit object in frequency domain
calculateCalculate specified parameters for circuit object
circleDraw circles on Smith chart
getz0Characteristic impedance of transmission line object
listformatList valid formats for specified circuit object parameter
listparamList valid parameters for specified circuit object
loglogPlot specified circuit object parameters using log-log scale
plotPlot specified circuit object parameters on X-Y plane
plotyyPlot specified object parameters with y-axes on both left and right sides
polarPlot specified circuit object parameters on polar coordinates
semilogxPlot specified circuit object parameters using log scale for x-axis
semilogyPlot specified circuit object parameters using log scale for x-axis
smithPlot specified circuit object parameters on Smith chart
writeWrite RF data from circuit or data object to file

Examples

tx1=rfckt.parallelplate('LineLength',0.045)
 
tx1 =
 
           Name: 'Parallel-Plate Transmission Line'
           nPort: 2
           AnalyzedResult: []
           LineLength: 0.0450
           StubMode: 'NotAStub'
           Termination: 'NotApplicable'
           Width: 0.0050
           Separation: 1.0000e-003
           MuR: 1
           EpsilonR: 2.3000
           LossTangent: 0
           SigmaCond: Inf

References

Pozar, David M. Microwave Engineering, John Wiley & Sons, Inc., 2005.

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