Documentation

rfckt.lclowpasstee class

Package: rfckt

Lowpass tee filter

Syntax

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

Description

Use the lclowpasstee class to represent a lowpass tee filter as a network of inductors and capacitors.

The LC lowpass tee network object is a 2-port network as shown in the following circuit diagram.

In the diagram, [L1, L2, L3, ...] is the value of the 'L' object property, and [C1, C2, C3, ...] is the value of the 'C' object property.

h = rfckt.lclowpasstee returns an LC lowpass tee network object whose properties all have their default values.

h = rfckt.lclowpasstee('Property1',value1,'Property2',value2,...) returns an LC lowpass tee network object, h, based on the specified properties. Properties that you do not specify retain their default values.

Properties

AnalyzedResultComputed S-parameters, noise figure, OIP3, and group delay values
CCapacitance data
LInductance data
NameObject name
nPortNumber of ports

Methods

analyzeAnalyze circuit object in frequency domain
calculateCalculate specified parameters for circuit object
circleDraw circles on Smith chart
extractExtract array of network parameters from data 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

filter = rfckt.lclowpasstee...
            ('C',[1e-12 4e-12],'L',[2e-9 2.5e-9])
 
filter =
 
              Name: 'LC Lowpass Tee
              nPort: 2
              AnalyzedResult: []
              L: [2x1 double]
              C: [2x1 double]

References

Ludwig, R. and P. Bretchko, RF Circuit Design: Theory and Applications, Prentice-Hall, 2000.

Zverev, A.I., Handbook of Filter Synthesis, John Wiley & Sons, 1967.

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