mutualInductor

Create mutual inductor element

Since R2023a

Description

Use the new mutualInductor object to create a mutual inductor element. You can add a mutual inductor element to your rfbudget object, circuit object, or in the RF Budget Analyzer app and then export to the mutual inductor RF Blockset™.

Creation

Syntax

mi = mutualInductor

mi = mutualInductor(Name=Value)

Description

mi = mutualInductor creates a mutual inductor element with default property values.

mi = mutualInductor(Name=Value) sets Properties of the mutual inductor element using one or more name-value arguments. For example, mi = mutualInductor(CouplingCoefficient=0.65) sets the coupling coefficient between the two coils to 0.65. Properties not specified retain their default values.

Properties

Name — Name of mutual inductor element

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

Name of the mutual inductor element, specified as a string scalar or character vector.

Example: 'MutualInductor'

Data Types: char | string

Inductance1 — Primary inductance of mutual inductor element

1e-6 (default) | positive scalar

Primary inductance of the mutual inductor element, specified as a positive scalar in henries.

Example: 1.5e-6

Data Types: double

Inductance2 — Secondary inductance of mutual inductor element

1e-6 (default) | positive scalar

Secondary inductance of the mutual inductor element, specified as a positive scalar in henries.

Example: 1.8e-6

Data Types: double

CouplingCoefficient — Coupling coefficient of mutual inductor element

0.9 (default) | positive scalar between 0 and 1

Coupling coefficient of the mutual inductor element or mutual coupling between primary and secondary coils, specified as a positive scalar between 0 and 1.

Example: 0.7

Data Types: double

NumPorts — Number of input and output ports

2 (default) | positive scalar

This property is read-only.

Number of input and output ports, returned as a positive scalar.

Data Types: double

Terminals — Terminals of mutual inductor element

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

This property is read-only.

Terminals of the mutual inductor element, returned as a cell array of strings.

Data Types: string

Object Functions

sparameters	Calculate S-parameters for RF data, network, circuit, and matching network objects
rfbudget	Create RF budget object and compute RF budget results for chain of 2-port elements
circuit	Circuit object
clone	Create copy of existing circuit element or circuit object

Examples

Add Mutual Inductor Element to Circuit Object

Create a mutual inductor element with the primary inductance of 33 nH, secondary inductance of 26 nH, and the coupling coefficient of 0.55.

mi = mutualInductor(Inductance1=33e-9,Inductance2=26e-9,CouplingCoefficient=0.55);

Create an amplifier object with a gain set of 10 dB and the noise figure of 2 dB.

a = amplifier(Gain=10,NF=2);

Create a default attenuator object.

att = attenuator;

Create a circuit object and name it.

ckt = circuit('adding_mutual_inductor_to_circuit');

Add the amplifier, mutual inductor, and the attenuator elements to the circuit object.

add(ckt,[1 2],a);
add(ckt,[2 3],mi);
add(ckt,[3 4],att);
setports(ckt,[1 0],[4 0]);

Display the circuit object.

disp(ckt)

  circuit: Circuit element

    ElementNames: {'Amplifier'  'MutualInductor'  'Attenuator'}
        Elements: [1x3 rf.internal.rfbudget.Element]
           Nodes: [0 1 2 3 4]
            Name: 'adding_mutual_inductor_to_circuit'

Calculate the S-parameters of the circuit at 2.1 GHz.

s = sparameters(ckt,2.1e9)

s = 
  sparameters with properties:

      Impedance: 50
       NumPorts: 2
     Parameters: [2x2 double]
    Frequencies: 2.1000e+09

Version History

Introduced in R2023a