shuntRLC

Create two-port shunt RLC circuit

Since R2021a. Recommended over rfckt.shuntrlc.

Description

Use the shuntRLC object to create a circuit representing a resistor, inductor, and capacitor connected in parallel or shunt. The shunt RLC circuit object is a two-port network as shown in this circuit diagram.

You can also use the shuntRLC object to model a shunt RLC circuit in cascaded stages using the rfbudget object or the RF Budget Analyzer app.

Creation

Syntax

rlc = shuntRLC

rlc = shuntRLC(Name,Value)

Description

rlc = shuntRLC creates a default shunt RLC object.

rlc = shuntRLC(Name,Value) sets Properties of the shuntRLC object using one or more name-value arguments. For example, rlc = shuntRLC('R',80) creates a shunt RLC object with the resistance set to 80 ohms. Properties you do not specify retain their default values.

Properties

Name — Name of shunt RLC circuit

shuntRLC (default) | string scalar | character vector

Name of the shunt RLC circuit, specified as a string scalar or a character vector.

Example: rlc = shuntRLC('Name','RLCshuntcircuit') creates a shunt RLC circuit called RLCshuntcircuit.

R — Resistance value

inf (default) | positive scalar

Resistance value of the shunt RLC circuit, specified as a positive scalar in ohms.

Example: rlc = shuntRLC('R',75) creates a shunt RLC circuit with the resistance set to 75 ohms.

L — Inductance value

inf (default) | positive scalar

Inductance value of the shunt RLC circuit, specified as a positive scalar in henries.

Example: rlc = shuntRLC('L',1e-6) creates a shunt RLC circuit with the inductance set to 1e-6 henries.

C — Capacitance value

0 (default) | positive scalar

Capacitance value of the shunt RLC circuit, specified as a positive scalar in farads.

Example: rlc = shuntRLC('C',2.2e-9) creates a shunt RLC circuit with the capacitance set to 2.2e-9 farads.

NumPorts — Number of input and output ports

Read-only: 2 (default) | positive scalar

This property is read-only.

Number of input and output ports of the shunt RLC circuit, returned as a positive scalar.

Terminals — Terminals of shunt RLC circuit

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

This property is read-only.

Terminals of the shunt RLC circuit, 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 S-Parameters and Noise Figure of Shunt RLC Circuit

Create a shunt RLC circuit with the specified parameters.

rlc = shuntRLC('R',60,'L',1e-3,'C',50e-6);

Calculate the S-parameters of the shunt RLC circuit at 1 GHz.

spar = sparameters(rlc,1e9)    

spar = 
  sparameters with properties:

      Impedance: 50
       NumPorts: 2
     Parameters: [2×2 double]
    Frequencies: 1.0000e+09

Calculate the noise figure of the shunt RLC circuit at 1 GHz.

nf = noisefigure(rlc,1e9)

nf = 
2.6324

Version History

Introduced in R2021a

R2023b: Recommended over rfckt.shuntRLC

shuntRLC is recommended over rfckt.shuntrlc because it enables you to:

• Create a two-port shunt RLC element.

• Build a circuit object with a shunt RLC element.

• Model a two-port shunt RLC element in an RF chain created using an rfbudget object or the RF Budget Analyzer app, and then export this element to RF Blockset™ or to rfsystem System object™ for circuit envelope analysis.