txlineElectricalLength

Create electrical-length-based transmission line

Since R2021b

Description

Use the txlineElectricalLength object to create an electrical-length-based transmission line. The txlineElectricalLength object is used in the Richards-Kuroda workflow.

Creation

Syntax

eltxline = txlineElectricalLength

eltxline = txlineElectricalLength(Name=Value)

Description

eltxline = txlineElectricalLength creates a default electrical-length-based transmission line object.

eltxline = txlineElectricalLength(Name=Value) sets Properties of the electrical-length-based transmission line using one or more name-value arguments. For example, txlineElectricalLength(Z0=75) creates an electrical-length-based transmission line with an impedance of 75 ohms.

Properties

Name — Name of transmission line

'ElectricalLength' (default) | string scalar | character vector

Name of the electrical-length-based transmission line, specified as a string scalar or character vector.

Example: Name='ELbased'

Z0 — Characteristic impedance

50 (default) | positive scalar

Characteristic impedance of the electrical-length-based transmission line, specified as a positive scalar in ohms.

Example: Z0=75

LineLength — Electrical length

pi/4 (default) | positive scalar

Electrical length of the electrical-length-based transmission line, specified as a positive scalar in radians.

Example: LinneLength=pi/4

ReferenceFrequency — Reference frequency

1e9 (default) | positive scalar

Reference frequency at which electrical-length-based transmission line exhibits its electrical length, specified as a positive scalar in radians.

Example: ReferenceFrequency=2e9

Termination — Stub termination

'NotApplicable' (default) | 'Open' | 'Short'

Stub termination, specified as either 'NotApplicable', 'Open', or 'Short'.

Example: Termination='Short'

Data Types: char

StubMode — Type of stub

'NotAStub' (default) | 'Series' | 'Shunt'

Type of stub, specified as either 'NotAStub', 'Series', or 'Shunt'.

Example: StubMode='Series'

Data Types: char

NumPorts — Number of input and output ports

2 (default) | positive scalar

This property is read-only.

Number of input and output ports of the electrical-length-based transmission line, returned as positive scalar.

Terminals — Terminals of transmission line

{'p1+' p2+' 'p1-' 'p2-'} (default) | cell array

This property is read-only.

Terminals of the electrical-length-based transmission line, returned as a cell array.

Object Functions

sparameters	Calculate S-parameters for RF data, network, circuit, and matching network objects
groupdelay	Group delay of S-parameter object or RF filter object or RF Toolbox circuit object
noisefigure	Calculate noise figure of transmission lines, series RLC, and shunt RLC circuits
realize	Realize circuit containing electrical-length-based transmission lines using microstrip transmission lines

Examples

Calculate Noise Figure and Group Delay of Electrical Length Transmission Line

Create an ideal transmission line with an electrical length of pi/8 radians at the reference frequency of 100 MHz.

 el = txlineElectricalLength(LineLength=pi/8,ReferenceFrequency=100e6);

Calculate the noise figure at 10 MHz.

nf = noisefigure(el,10e6)

nf = 0

Calculate the group delay at 10 MHz.

gd = groupdelay(el,10e6)

gd = 6.2500e-10

Version History

Introduced in R2021b