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resonatorSplitRingSquare

Create microstrip line loaded with square split-ring resonator

Since R2022b

Description

Use the resonatorSplitRingSquare object to create a microstrip line loaded with a square split-ring resonator.

Three part image from right to left: Default image of a square split ring resonator. Current distribution on the square split ring resonator. S-parameters plot of the square split ring resonator.

Creation

Description

example

resonator = resonatorSplitRingSquare creates a microstrip line loaded with a square split-ring resonator on the X-Y plane. The default proprieties are for a design frequency of 5.7 GHz.

example

resonator = resonatorSplitRingSquare(Name=Value) sets Properties using one or more name-value arguments. For example, resonatorSplitRingSquare(RingWidth=0.045) creates a square split-ring resonator with a ring width of 0.045 meters. Properties not specified retain their default values

Properties

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Length of the inner ring of the ring resonator in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(RingLengthInner=0.045)

Data Types: double

Width of the square ring in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(RingWidth=0.0009)

Data Types: double

Spacing between the inner and outer square ring in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(RingSpacing=0.0008)

Data Types: double

Split gap on the square ring in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(SplitGap=0.0008)

Data Types: double

Gap between the resonator and the microstrip line in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(CouplingGap=0.00082)

Data Types: double

Number of resonators on one side of the transmission line, specified as a positive scalar in the range [1,7]. The object supports a minimum of one resonator and a maximum of seven resonators.

Example: resonator = resonatorSplitRingSquare(NumResonator=4)

Data Types: double

Spacing between the resonators when number of resonators is more than one in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(NumResonator=4)

Data Types: double

Length of the microstrip line in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(PortLineLength=0.055)

Data Types: double

Width of the microstrip line in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(PortLineWidth=0.0061)

Data Types: double

Height of the resonator from the ground plane in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(Height=0.020)

Data Types: double

Width of the ground plane in meters, specified as a positive scalar.

Example: resonator = resonatorSplitRingSquare(GroundPlaneWidth=0.2241)

Data Types: double

Type of dielectric material to use as a substrate, specified as a dielectric object. The thickness of the default dielectric material has the following parameters: (Name={'FR4'},EpsilonR=3.38,LossTangent=0.0002,Thickness=0.813e-3).

Example: d = dielectric("FR4"); resonator = resonatorSplitRingSquare(Substrate=d)

Type of metal to use in the conducting layers, specified as a metal object.

Example: m = metal("PEC"); resonator = resonatorSplitRingSquare(Conductor=m)

Flag to add a metal shielding to the PCB component, specified as a logical 0 or logical 1.

Example: IsShielded = true or 1 add a metal shield.

Note

To enable FEM solver required for the metal shield property, download the Integro-Differential Modeling Framework for MATLAB. To download this add-on:

  1. In the Home tab Environment section, click on Add-Ons. This opens the add-on explorer. You need an active internet connection to download the add-on.

  2. Search for Integro-Differential Modeling Framework for MATLAB and click Install.

  3. To verify if the download is successful, run

    matlab.addons.installedAddons
    in your MATLAB® session command line.

Data Types: logical

This property is read-only.

Metal shield for the PCB component, specified as a shape.Box object. The length and width of the box must be equal to the length and width of the ground plane. The center of the box is at [0 0 Height]. You can modify the property after creating the object.

Dependencies

To enable the Shielding property, set the IsShielded property to true or 1.

Type of RF connector assembled at the feed locations of the PCB component, specified as a RFConnector object.

Example: Create connector from RFConnector object like this: coaxial = RFConnector adds a coaxial connector.

Dependencies

To enable the Connector property, set the IsShielded property to true or 1.

Object Functions

chargeCalculate and plot charge distribution
currentCalculate and plot current distribution
designDesign hairpin filter around specified frequency
feedCurrentCalculate current at feed port
getZ0Calculate characteristic impedance of transmission line
layoutPlot all metal layers and board shape
meshChange and view mesh properties of metal or dielectric in PCB component
shapesExtract all metal layer shapes of PCB component
showDisplay PCB component structure or PCB shape
sparametersCalculate S-parameters for RF PCB objects
RFConnectorCreate RF connector

Examples

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Create a default square split-ring resonator.

resonator = resonatorSplitRingSquare
resonator = 
  resonatorSplitRingSquare with properties:

     RingLengthInner: 0.0036
           RingWidth: 5.0000e-04
         RingSpacing: 3.0000e-04
            SplitGap: 5.0000e-04
         CouplingGap: 2.5000e-04
        NumResonator: 5
    ResonatorSpacing: 0.0040
      PortLineLength: 0.0450
       PortLineWidth: 0.0019
              Height: 8.1300e-04
    GroundPlaneWidth: 0.0200
           Substrate: [1x1 dielectric]
           Conductor: [1x1 metal]
          IsShielded: 0

View the resonator.

show(resonator)

Figure contains an axes object. The axes object with title resonatorSplitRingSquare element, xlabel x (mm), ylabel y (mm) contains 6 objects of type patch, surface. These objects represent Copper, feed, FR4.

Create a split-ring square with one resonator.

resonator = resonatorSplitRingSquare(NumResonator=1);
resonator.Height =  0.0016;

Create a dielectric object with two dielectrics. Use this substrate in the resonator.

sub = dielectric('FR4','Teflon');
sub.Thickness =[0.0016 0.0008];
resonator.Substrate = sub;

View the resonator.

figure; 
show(resonator);

Figure contains an axes object. The axes object with title resonatorSplitRingSquare element, xlabel x (mm), ylabel y (mm) contains 7 objects of type patch, surface. These objects represent Copper, feed, FR4, Teflon.

References

[1] Pozar, David.M. Microwave Engineering Singapore; JohnWiley and Sons. Inc, 2012.

[2] Mahyuddin, Muzlifah and Nur Farah Syazwani Ab. Kadir. Design of a 5.8 GHz Bandstop Filter Using Split Ring Resonator Array

[3] Mahyuddin, Muzlifah and Nur Farah Syazwani Ab. Kadir. “A 10 GHz Low Phase Noise Split-Ring Resonator Oscillator.” International Journal of Information and Electronics Engineering, 2013.

Version History

Introduced in R2022b

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