txlineDelayLossless

Create delay lossless transmission line

Since R2021a

Description

Use the txlineDelayLossless object to create a delay lossless transmission line. You can also use the txlineDelayLossless object to model a delay lossless transmission line in an RF system using the rfbudget object or the RF Budget Analyzer app.

Creation

Syntax

dltxline = txlineDelayLossless

dltxline = txlineDelayLossless(Name,Value)

Description

dltxline = txlineDelayLossless creates a default delay lossless transmission line object.

dltxline = txlineDelayLossless(Name,Value) sets Properties of the delay lossless transmission line using one or more name-value arguments. For example, dltxline = txlineDelayLossless('Z0',75) creates a delay lossless transmission line with an impedance of 75 ohms.

Properties

Name — Name of delay lossless transmission line

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

Name of the delay lossless transmission line, specified as a string scalar or character vector.

Example: 'Name','DLbased'

Example: dltxline.Name = 'DLbased'

Z0 — Characteristic impedance

50 (default) | positive scalar

Characteristic impedance of the delay lossless transmission line, specified as a positive scalar in ohms.

Example: 'Z0',75

Example: dltxline.Z0 = 75

TimeDelay — Time delay in delay lossless transmission line

1e-12 (default) | positive scalar

Time delay (τ_d) in the delay lossless transmission line, specified as a positive scalar in seconds.

Example: 'TimeDelay',1e-9

Example: dltxline.TimeDelay = 1e-9

NumPorts — Number of input and output ports

2 (default) | positive scalar

This property is read-only.

Number of input and output ports of the delay lossless transmission line, returned as positive scalar.

Terminals — Terminals of delay lossless transmission line

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

This property is read-only.

Terminals of the delay lossless 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

Examples

Calculate Group Delay and Noise Figure of Delay Lossless Transmission Line

Create a delay lossless transmission line with a transmission delay of 5e-12 sec.

dltxline = txlineDelayLossless('TimeDelay',5e-12);

Calculate the group delay at 10 MHz.

gd = groupdelay(dltxline,10e6)

gd = 
5.0000e-12

Calculate the noise figure at 10 MHz.

nf = noisefigure(dltxline,10e6)

nf = 
0

Version History

Introduced in R2021a