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<td> [[Image:Tempo L9 Fig1.png|thumb|left|480px|The coplanar waveguide transmission line calculator tool of RF.Spice A/D.]] </td>

<td> [[Image:Tempo L9 Fig2.png|thumb|left|720px|EM.Tempo's Object Toolbar.]] </td>

<td> [[Image:Tempo L9 Fig3.png|thumb|left|720px|The geometry of the original one-port CPW structure created by the wizard.]] </td>

<td> [[Image:Tempo L9 Fig3D.png|thumb|left|640px|The geometry of the one-port CPW structure with an open-ended center strip and shrunken domain box.]] </td>

<td> [[Image:Tempo L9 Fig4.png|thumb|left|480px|The CPW port/source dialog.]] </td>

<td> [[Image:Tempo L9 Fig5.png|thumb|left|480px|Setting the port reference impedance in the port definition dialog.]] </td>

[[Image:Tempo L9 Fig6.png|thumb|600pxleft|640px|The CPW structure with all objects in freeze mode and two field probes and three orthogonal field sensor planes.]]

[[Image:Tempo L9 Fig13.png|thumb|left|480px|Measuring the spacing between to field maxima in EM.Grid's 2D field graph.]]

[[Image:Tempo L9 Fig16.png|thumb|left|720px|EM.Tempo's excitation waveform dialog.]]

[[Image:Tempo L9 Fig14.png|thumb|left|550px|Temporal waveform at the location of the field probe.]]

[[Image:Tempo L9 Fig15.png|thumb|left|550px|Measuring the time interval between the two pulses at the location of the field probe.]]

In this section of the tutorial lesson, you will terminate the CPW line with a resistive load and will perform a parametric sweep of your circuit as a function of the load resistance. First, you will create two horizontal lines at the open end discontinuity to connect the center strip to the two lateral ground planes. This will effectively short out the center strip. You have to make sure that the PEC material group called "CONDUCTOR" is the active group in the navigation tree. Under the PEC group, draw the following line objectsobject:

! scope="row"| Line_1Line1

| 1mm gap | (-25mm, 1mm0, 1.5mm) | (0&deg;, 0&deg;, 90180&deg;) |} Next, open the variables dialog and define a new variable called RR with a definition (numeric value) of 0. This will represent the resistance of the termination load. Also reduce the gap size to 1mm: {| class="wikitable"

! scope="rowcol"| Line_2Variable Name! scope="col"| LineOriginal Definition! scope="col"| PEC New Definition| 1mm -| gap| 8| (-25mm, -1mm, 1.5mm) | (0&deg;, 0&deg;, -90&deg;) | RR| N/A| 0

Next, open the variables dialog and define a new variable called RR with a definition (numeric value) of 100. This will represent the resistance of the termination load. Now, right-click on the '''Lumped Devices''' item in the "Sources" section of the navigation tree and select '''Insert New Source...''' from the contextual menu. The lumped device dialog opens up. Keep the default name "LC_1". From the '''Line Object''' drop-down list, choose "Line_1Line1". The '''Type''' drop-down list offers four options: Resistor, Capacitor, Inductor and Diode. Select '''Resistor''' and replace its default '''Resistance''' value of 100&Omega; with the expression variable "2*RR". Repeat this process one more time, call the second lumped device "LC_2", associate it with the line object "Line_2" and select the resistor type with a resistance equal to "2*RR". Note that two resistors are effectively shunted to the ground. Therefore, the total load resistance will be (2*RR) || (2*RR) = RR.

[[Image:Tempo L9 Fig17.png|thumb|left|480px|EM.Tempo's lumped device dialog.]]

[[Image:Tempo L9 Fig18.png|thumb|left|550px|A close-up of the discontinuity region with two horizontal lines and two resistive lumped devices.]]

[[Image:Tempo L9 Fig21.png|thumb|left|720px|Defining the sweep variable in EM.Tempo's parametric sweep dialog.]]

[[Image:Tempo L9 Fig22.png|thumb|left|480px|The graph of S11 parameter of the resistively terminated CPW line segment.]]

[[Image:Tempo L9 Fig23.png|thumb|left|480px|The graph of VSWR of the resistively terminated CPW line segment.]]

[[Image:Tempo L9 Fig24.png|thumb|left|480px|Changing the lumped device "LC_1" to a nonlinear diode.]]

[[Image:Tempo L9 Fig27.png|thumb|left|720px|The geometry of the modified CPW line segment with a diode termination.]]

[[Image:Tempo L9 Fig28.png|thumb|left|400px|A close-up view of the CPW termination area.]]

[[Image:Tempo L9 Fig25.png|thumb|left|720px|Defining a large-signal sinusoidal waveform in the Excitation Waveform dialog.]]

[[Image:Tempo L9 Fig26.png|thumb|left|480px|The graph of the waveform of Probe_1 as a function of time with a diode load.]]

[[Image:Tempo L9 Fig26A.png|thumb|left|480px|The graph of the waveform of Probe_2 as a function of time with a diode load.]]