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Getting Started with HFSS: Coax Connector ANSYS, Inc. 275 Technology Drive Canonsburg, PA 15317 Tel: (+1) 724Ͳ746Ͳ3304 Fax: (+1) 724Ͳ514Ͳ9494 General Information: [email protected] Technical Support: [email protected] May 2010 Inventory ********

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  • Getting Started with HFSS:Coax Connector

    ANSYS,Inc.275TechnologyDriveCanonsburg,PA15317Tel:(+1)7247463304Fax:(+1)7245149494GeneralInformation:[email protected]:[email protected]

    May2010Inventory********

  • The information contained in this document is subject to change without notice. Ansoft makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Ansoft shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, perfor-mance, or use of this material.

    2010 SAS IP Inc., All rights reserved.ANSYS, Inc.275 Technology DriveCanonsburg, PA 15317USATel: (+1) 724-746-3304Fax: (+1) 724-514-9494

    General Information: [email protected] Support: [email protected]

    HFSS and Optimetrics are registered trademarks or trademarks of SAS IP Inc.. All other trademarks are the property of their respective owners.

    New editions of this manual incorporate all material updated since the previous edition. The manual printing date, which indicates the manuals current edition, changes when a new edition is printed. Minor corrections and updates that are incorporated at reprint do not cause the date to change.Update packages may be issued between editions and contain additional and/or replacement pages to be merged into the manual by the user. Pages that are rearranged due to changes on a previous page are not considered to be revised.

    Edition Date Software Version

    1 Jan 2006 10.02 May 2007 11.03 February 2009 12.04 September 2010 13.0

  • Getting Started with HFSS: A Dielectric Resonator Antenna Problem

    iii

    Conventions Used in this GuidePlease take a moment to review how instructions and other useful infor-mation are presented in this guide.

    Procedures are presented as numbered lists. A single bullet indicates that the procedure has only one step.

    Bold type is used for the following:- Keyboard entries that should be typed in their entirety exactly as shown. For example, copy file1 means to type the word copy, to type a space, and then to type file1.

    - On-screen prompts and messages, names of options and text boxes, and menu commands. Menu commands are often separated by car-ats. For example, click HFSS>Excitations>Assign>Wave Port.

    - Labeled keys on the computer keyboard. For example, Press Enter means to press the key labeled Enter.

    Italic type is used for the following:- Emphasis.- The titles of publications. - Keyboard entries when a name or a variable must be typed in place of the words in italics. For example, copy file name means to type the word copy, to type a space, and then to type a file name.

    The plus sign (+) is used between keyboard keys to indicate that you should press the keys at the same time. For example, Press Shift+F1 means to press the Shift key and the F1 key at the same time.

    Toolbar buttons serve as shortcuts for executing commands. Toolbar buttons are displayed after the command they execute. For example,

    On the Draw menu, click Line means that you can click the Draw Line toolbar button to execute the Line command.

    Alternate methods or tips are listed in the left margin in blue italic text.

  • Getting Started with HFSS: A Dielectric Resonator Antenna Problem

    iv

    Getting Help

    Ansys Technical SupportTo contact Ansys technical support staff in your geographical area, please log on to the Ansys corporate website, https://www1.ansys.com.You can also contact your Ansoft account manager in order to obtain this information.All Ansoft software files are ASCII text and can be sent conveniently by e-mail. When reporting difficulties, it is extremely helpful to include very specific information about what steps were taken or what stages the simulation reached, including software files as applicable. This allows more rapid and effective debugging.

    Help MenuTo access online help from the HFSS menu bar, click Help and select from the menu: Contents - click here to open the contents of the online help. Seach - click here to open the search function of the online help. Index - click here to open the index of the online help.

    Context-Sensitive HelpTo access online help from the HFSS user interface, do one of the follow-ing: To open a help topic about a specific HFSS menu command, press

    Shift+F1, and then click the command or toolbar icon. To open a help topic about a specific HFSS dialog box, open the dia-

    log box, and then press F1.

  • Contents-1

    Table of Contents

    1. Coaxial ConnectorGetting Started . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

    Launching Ansoft HFSS . . . . . . . . . . . . . . . . . 1-3

    Setting Tool Options . . . . . . . . . . . . . . . . . . . . 1-3

    Opening a New Project . . . . . . . . . . . . . . . . . . 1-3

    Set Solution Type . . . . . . . . . . . . . . . . . . . . . . 1-4

    Creating the 3D Model . . . . . . . . . . . . . . . . . . . . 1-4Set Model Units . . . . . . . . . . . . . . . . . . . . . . . . 1-4

    Set Default Material . . . . . . . . . . . . . . . . . . . . . 1-5

    Create the Conductor 1 . . . . . . . . . . . . . . . . . . 1-6

    Create Offset Coordinate System . . . . . . . . . . 1-7

    Create a Section . . . . . . . . . . . . . . . . . . . . . . . 1-7

    Rename the Section . . . . . . . . . . . . . . . . . . . . 1-8

    Set Grid Plane . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

    Create Conductor Bend . . . . . . . . . . . . . . . . . . 1-9

    Sweep Bend: . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

    Set Grid Plane . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

    Create Offset Coordinate System . . . . . . . . . . 1-12

    Create Conductor 2 . . . . . . . . . . . . . . . . . . . . . 1-13

    To set the name: . . . . . . . . . . . . . . . . . . . . . . . 1-13

    To fit the view: . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

  • Getting Started with HFSS: Coax Connector

    Contents-2

    Create a Third Offset Coordinate System . . . . 1-14

    Create Conductor 3 . . . . . . . . . . . . . . . . . . . . . 1-14

    To set the name: . . . . . . . . . . . . . . . . . . . . . . . 1-15

    Group the Conductors . . . . . . . . . . . . . . . . . . . 1-15

    Set Default Material . . . . . . . . . . . . . . . . . . . . . 1-16

    Create the Female End . . . . . . . . . . . . . . . . . . 1-16

    Create the Female Bend . . . . . . . . . . . . . . . . . 1-16

    Set Working Coordinate System . . . . . . . . . . . 1-17

    Set Grid Plane . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

    Create the Male End . . . . . . . . . . . . . . . . . . . . 1-18

    Group the Vacuum Objects . . . . . . . . . . . . . . . 1-19

    Add New Material . . . . . . . . . . . . . . . . . . . . . . 1-19

    Create the Ring . . . . . . . . . . . . . . . . . . . . . . . . 1-20

    Complete the Ring . . . . . . . . . . . . . . . . . . . . . . 1-21

    Add New Material . . . . . . . . . . . . . . . . . . . . . . 1-22

    Create the Male Teflon . . . . . . . . . . . . . . . . . . 1-23

    Create Wave Port Excitation 1 . . . . . . . . . . . . 1-24

    Set Working Coordinate System . . . . . . . . . . . 1-27

    Set Grid Plane . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

    Create Wave Port Excitation 2 . . . . . . . . . . . . 1-28

    Create the Female Teflon . . . . . . . . . . . . . . . . 1-29

    Complete the Vacuum Object . . . . . . . . . . . . . 1-30

    Complete the Model . . . . . . . . . . . . . . . . . . . . 1-31

    Boundary Display . . . . . . . . . . . . . . . . . . . . . . 1-32

    Analysis Setup . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32Creating an Analysis Setup . . . . . . . . . . . . . . . 1-32

    Adding a Frequency Sweep . . . . . . . . . . . . . . 1-33

    Save Project . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

    Analyze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34Model Validation . . . . . . . . . . . . . . . . . . . . . . . 1-34

    Analyze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

    Solution Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35Create Reports . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

  • Getting Started with HFSS: Coax Connector

    Contents-3

    Create Terminal S-Parameter Plot vs. Pass . . 1-36

    Create Terminal S S-Parameter Plot - Magnitude 1-38

    Create Terminal S S-Parameter Plot - Phase . 1-38

    Field Overlays . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40Create Field Overlay . . . . . . . . . . . . . . . . . . . . 1-40

    Edit Sources . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41

    Field Animations . . . . . . . . . . . . . . . . . . . . . . . . 1-41

  • Getting Started with HFSS: Coax Connector

    Contents-4

  • Coaxial Connector -1

    Coaxial Connector

    This example is intended to show you how to create, sim-ulate, and analyze a coaxial connector, using the Ansoft HFSS Design Environment.

    The following features of the Ansoft HFSS Design Environ-ment are used to create this passive device modelD3D Solid ModelingDPrimitives: Cylinders, Polylines, CirclesDBoolean Operations: Unite, Subtract, and Sweep

  • Getting Started with HFSS: Coax Connector

    -2 Coaxial Connector

    DBoundaries/ExcitationsDPorts: Wave Ports and Terminal LinesDAnalysisDSweep: Fast FrequencyDResultsDCartesian plottingDField Overlays:D3D Field Plots, Animations, Cut Cut-Planes

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -3

    Getting Started

    Launching Ansoft HFSS1 To access Ansoft HFSS, click the Microsoft Start button,

    select All Programs, and select the Ansoft, HFSS 12 pro-gram group. Click HFSS 12.

    Setting Tool OptionsIn order to follow the steps outlined in this example, verify that the following tool options are set:1 Click Tools>Options>HFSS Options

    This opens the HFSS Options dialog.2 Click the General tab

    Check Use Wizards for data entry when creating new boundaries Check Duplicate boundaries with geometry.

    3 Click the OK button to close the dialog.4 Click Tools>Options>3D Modeler Options.

    This opens the 3D Moder Options dialog.5 In the 3D Modeler Options dialog click the Operation tab

    Check Automatically cover closed polylines.6 Click the Drawing tab

    Check Edit property of new primitives. This causes a Properties dialog to open when you create a new primitive object in the Modeler.

    7 Click the OK button

    Opening a New ProjectTo open a new project:1 In an Ansoft HFSS window, click the On the Standard tool-

    bar, or select the menu item File>New.

    2 From the Project menu, select Insert HFSS Design Design.

  • Getting Started with HFSS: Coax Connector

    -4 Coaxial Connector

    Set Solution TypeTo set the solution type:1 Click HFSS>Solution Type2 The Solution Type dialog opens.3 Choose Driven Terminal

    Driven Terminal calculates the terminal-based S-parame-ters of multi-conductor transmission line ports. The Sma-trix solutions will be expressed in terms of terminal voltages and currents.

    4 Click the OK button

    Creating the 3D Model

    Set Model UnitsTo set the units:1 Click Modeler>Units

    The Set Model Units dialog opens.2 Select Units: cm

    3 Click the OK button

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -5

    Set Default MaterialTo set the default material:1 Using the 3D Modeler Materials toolbar, choose Select...

    2 This opens the Select Definition window with the Materi-als tab.

    3 Type pec in the Search by Name field.

  • Getting Started with HFSS: Coax Connector

    -6 Coaxial Connector

    This highlights the pec material.4 Click the OK button.

    This sets the default material to pec and closes the Select Definition window.

    Create the Conductor 1To create the conductor1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dX: 0.152, dY: 0.0, dZ: 0.0, Press the Enter key

    4 Using the coordinate entry fields, enter the height:dX: 0.0, dY: 0.0, dZ: 1.448, Press the Enter key

    Because of you checked Edit property of new primitives in the 3D Modeler Drawing Options, the Properties dialog for the cylinder opens. To set the name:1 In the Name field type: Conductor12 Click the OK buttonTo fit the view:1 Click View>Fit All>Active View.

    Or press the CTRL+D key

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -7

    Create Offset Coordinate SystemTo create an offset Coordinate System:1 Click Modeler>Coordinate System>Create>Relative

    CS>Offset

    2 Using the coordinate entry fields, enter the originX: 0.0, Y: 0.0, Z: 1.448, Press the Enter key

    Create a SectionTo section the conductor1 Click Edit>Select All Visible Visible. Or press the CTRL+A

    key.

    2 Click Modeler>Surface>SectionIn the Section Window, accept the Section Plane: XY

    3 Click the OK button

  • Getting Started with HFSS: Coax Connector

    -8 Coaxial Connector

    Rename the SectionTo set the name:1 Click HFSS>List2 From the Model tab, select the object named Section1

    3 Click the Properties buttonThe Properties dialog appears.

    4 In the Name field type: Bend5 Click the OK button to close the Properties.6 Click the Done button to close the Design List.

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -9

    Set Grid PlaneTo set the grid plane:1 Click Modeler>Grid Plane>YZ

    Create Conductor BendTo create the bend:1 Click Draw>Arc>Center Point2 Using the coordinate entry fields, enter the vertex point:

    X: 0.0, Y: 0.4, Z: 0.0, Press the Enter key3 Using the coordinate entry fields, enter the radial point:

    X: 0.0, Y: 0.0, Z: 0.0, Press the Enter key4 Using the coordinate entry fields, enter the sweep arc

    length:X: 0.0, Y: 0.4, Z: 0.4, Press the Enter key

    5 Using the mouse, right-click in the modeler window and select Done from the shortcut menu.

    6 Click the OK button when the Properties dialog appears

    Sweep Bend:1 Click Edit>Select>By Name

    The Select Object dialog appears.2 Use the Cntrl key with the mouse to select Bend and

  • Getting Started with HFSS: Coax Connector

    -10 Coaxial Connector

    Polyline1 without selecting Conductor1.

    3 Click the OK button4 Click Draw>Sweep>Along Path

    The Sweep along path dialog opens.

    5 Click the OK button.

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -11

    The sweep is drawn in the Modeler window.

  • Getting Started with HFSS: Coax Connector

    -12 Coaxial Connector

    Set Grid PlaneTo set the grid plane:1 Click Modeler>Grid Plane>XZ

    Create Offset Coordinate SystemTo create a second offset Coordinate System:1 Ensure that the Working CS is RelativeCS1.

    Do this either by clicking Modeler>Coodinate System>Set Working CS, and using the dialog, or go to the History tree, and Under Coordinate Systems and the Global icon, select RelativeCS1.

    2 Click Modeler>Coordinate System>Create>RelativeCS>Offset

    3 Using the coordinate entry fields, enter the originX: 0.0, Y: 0.4, Z: 0.4,

    4 Press the Enter key

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -13

    The new coordinate system appears as shown here:

    Create Conductor 2To create the conductor1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dX: 0.152, dY: 0.0, dZ: 0.0, Press the Enter key

    4 Using the coordinate entry fields, enter the height:dX: 0.0, dY: 0.436, dZ: 0.0, Press the Enter key

    To set the name:1 In the Properties window, for Name type: Conductor22 Click the OK button

  • Getting Started with HFSS: Coax Connector

    -14 Coaxial Connector

    To fit the view:1 Click View>Fit All>Active View View.

    Create a Third Offset Coordinate SystemTo create a third offset Coordinate System:1 With the working coodinate system set as RelativeCS2,

    click Modeler>Coordinate System>Create>Relative CS>Offset

    2 Using the coordinate entry fields, enter the originX: 0.0, Y: 0.436, Z: 0.0,

    3 Press the Enter key.

    Create Conductor 3To create the conductor1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dX: 0.225, dY: 0.0, dZ: 0.0, Press the Enter key

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -15

    4 Using the coordinate entry fields, enter the height:dX: 0.0, dY: 1.3, dZ: 0.0, Press the Enter key

    To set the name:1 In the Properties window Name field, type Conductor32 Click the OK button.To fit the view:1 Click View>Fit All>Active View.

    Group the ConductorsTo group the conductors:1 Click Edit>Select All Visible, or press the CTRL+A key.2 Select the menu item, Modeler>Boolean>Unite.

  • Getting Started with HFSS: Coax Connector

    -16 Coaxial Connector

    To fit the view:1 Click View>Fit All>Active View.

    Set Default MaterialTo set the default material:1 Using the 3D Modeler Materials toolbar, choose vacuum

    Create the Female EndTo create the female end:1 Ensure that the current Coordinate System is RelativeCS3.2 Click Draw>Cylinder3 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    4 Using the coordinate entry fields, enter the radius:dX: 0.511, dY: 0.0, dZ: 0.0, Press the Enter key

    5 Using the coordinate entry fields, enter the height:dX: 0.0, dY:1.3, dZ: 0.0, Press the Enter key

    To set the name:1 In the Properties window Name field type: Female2 Click the OK buttonTo fit the view:1 Click View>Fit All>Active View

    Create the Female BendTo create the bend:1 Click Draw>Cylinder.2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dx: 0.351, : dy: 0.0, : dz: 0.0, : Press the Enter key

    4 Using the coordinate entry fields, enter the height:

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -17

    dx: 0.0, : dy: -1.236, dz: 0.0, : Press the Enter key

    To set the name:1 In the Properties window Name field type: FemaleBend2 Click the OK buttonTo fit the view:1 Click View>Fit All>Active View.

    Set Working Coordinate SystemTo set the working coordinate system:1 Click 3D Modeler>Coordinate System>Set Working CS

    The Select Coordinate System Window appears.2 From the list, select the CS: Global3 Click the Select button

  • Getting Started with HFSS: Coax Connector

    -18 Coaxial Connector

    Set Grid PlaneTo set the grid plane:1 Click 3D Modeler>Grid Plane>XY

    Create the Male EndTo create the male end:1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dx: 0.351, : dy: 0.0, : dz: 0.0, : Press the Enter key

    4 Using the coordinate entry fields, enter the height:dx: 0.0, : dy: 0.0, : dz: 2.348, : Press the Enter key

    To set the name:1 In the Properties window Name field type: Male2 Click the OK button

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -19

    To fit the view:1 Click View>Fit All>Active View.

    Group the Vacuum ObjectsTo unite the objects Female, FemaleBend and Male:1 Click Edit>Select>By Name2 The Select Object dialog appears.3 Select the objects named: Female, FemaleBend Female-

    Bend, Male4 Click the OK button5 Select the menu item, Modeler>Boolean>UniteTo fit the view:1 Click View>Fit All>Active View.

    Add New MaterialTo add a new material:1 Using the 3D Modeler Materials toolbar, choose Select2 From the Select Definition window, click the Add Material

    buttonThe View/Edit Material window appears.

    3 For the Material Name type: My_Ring4 For the Value of Relative Permittivity type: 3.

    5 Click the OK button to close the View/Edit Material dia-log.

    6 Click the OK button to close the Materials window.

  • Getting Started with HFSS: Coax Connector

    -20 Coaxial Connector

    Create the RingTo create the ring:1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.736, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dX: 0.511, dY: 0.0, dZ: 0.0, Press the Enter key

    4 Using the coordinate entry fields, enter the height:dX: 0.0, dY: 0.0, dZ: 0.236, Press the Enter key

    To set the name:1 In the Properties window Name field type: Ring2 Click the OK button

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -21

    To fit the view:1 Click View>Fit All>Active View.

    Complete the RingTo select the objects Ring and Male:1 Click Edit>Select>By Name2 Select Object Dialog,3 Select the objects named: Ring, Female4 Click the OK buttonTo complete the ring:1 Click 3D Modeler>Boolean>Subtract

    The Subtract Window appears.2 For the Blank Parts: Ring and for the Tool Parts: Female

    Check Clone tool objects before subtract.

  • Getting Started with HFSS: Coax Connector

    -22 Coaxial Connector

    3 Click the OK button

    Add New MaterialTo add a new material:1 Using the 3D Modeler Materials toolbar, choose Select.

    The Select Definition window appears.2 From the Select Definition window, click the Add Material

    buttonThe View/Edit Material dialog appears.

    3 For the Material Name type: My_Teflon

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -23

    4 For the Value of Relative Permittivity type: 2.1

    5 Click the OK button to close the View/Edit Material dia-log.

    6 Click the OK button to close the Select Definition window.

    Create the Male TeflonTo create the teflon teflon:1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tionX: 0.0, Y: 0.0, Z: 0.46, Press the Enter key

    3 Using the coordinate entry fields, enter the radius:dX: 0.511, dY: 0.0, dZ: 0.0, Press the Enter key

    4 Using the coordinate entry fields, enter the height:

  • Getting Started with HFSS: Coax Connector

    -24 Coaxial Connector

    dX: 0.0, dY: 0.0, dZ: 0.788, Press the Enter key

    To set the name:1 In the Properties window Name file type: MaleTeflon2 Click the OK buttonTo fit the view:1 Click View>Fit All>Active View.

    Create Wave Port Excitation 1Note: To simplify the instructions, a 2D object will be created to represent the port. This is not a requirement for defining ports. Graphical face selection can be used as an alternative.To create a circle that represents the port:1 Click Draw>Circle2 Using the coordinate entry fields, enter the center posi-

    tionX: 0.0, Y: 0.0, Z: 0.0, Press the Enter key

    3 Using the coordinate entry fields, enter the radius of the circle:

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -25

    dX: 0.351, dY: 0.0, dZ: 0.0, Press the Enter key.

    To set the name:1 In the Properties window Name field type: p12 Click the OK buttonTo select the object p1:1 Click Edit>Select>By Name

    The Select Object dialog opens.2 Select the objects named: p13 Click the OK buttonNote: You can also select the object from the Model TreeTo assign the wave port excitation1 With circle p1 selected, click HFSS>Excita-

    tions>Assign>Wave Port

    The Reference Conductors for Terminals dialog appears.2 Specify the Name as p13 For Terminal Naming, select the Use port object name

    radio button.

  • Getting Started with HFSS: Coax Connector

    -26 Coaxial Connector

    The Conductor list includes Conductor3. Leave this unchecked.

    4 Click OKThe dialog closes, and the wave port and terminal icons

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -27

    appear in the Project tree.

    You can select the p1 wave port or the p1_T1 terminal to examine their properties.

    Set Working Coordinate SystemTo set the working coordinate system:1 In the History tree, if necessessary click the + sign left

    of Coordinate Systems list those available.

    2 Click Relative CS3.This sets RelativeCS3 as the relative coordinate system.

  • Getting Started with HFSS: Coax Connector

    -28 Coaxial Connector

    Set Grid PlaneTo set the grid plane:1 Click Modeler>Grid Plane>XZ

    Create Wave Port Excitation 2Note: To simplify the instructions, a 2D object will be created to represent the port. This is not a requirement for defining ports. Graphical face selection can be used as an alternative.To create a circle that represents the port:1 Click Draw>Circle2 Using the coordinate entry fields, enter the center posi-

    tion3 X: 0.0, Y: 1.3 1.3, Z: 0.0, Press the Enter key4 Using the coordinate entry fields, enter the radius of the

    circle:5 dX: 0.511, dY: 0.0, dZ: 0.0, Press the Enter key.

    To set the name:1 In the Properties dialog, Name field, type: p22 Click the OK.

  • Getting Started with HFSS: Coax Connector

    Coaxial Connector -29

    To select the object p2:1 Click Edit>Select Objects>By Name.

    This opens the Select Object dialog.2 Select p2 and click the OK button.

    This highlights p2. You can also select p2 in the History tree under Sheets-Unassigned.

    To assign wave port excitation1 Click HFSS>Excitations>Assign>Wave Port

    The Reference Conductors for Terminals dialog appears.2 Specify the Name as p23 For Terminal Naming, select the Use port object name

    radio button.The Conductor list includes Conductor3. Leave this unchecked.

    4 Click OKThe dialog closes, and the new wave port and terminal icons appear in the Project tree.

    Create the Female TeflonTo create the Teflon:1 Click Draw>Cylinder2 Using the coordinate entry fields, enter the cylinder posi-

    tion3 X: 0.0, Y: 0.0, Z: 0.0, Press the Enter key4 Using the coordinate entry fields, enter the radius:5 dx: 0.511, : dy: 0.0, : dz: 0.0, : Press the Enter key6 Using the coordinate entry fields, enter the height:

  • Getting Started with HFSS: Coax Connector

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    7 dx: 0.0, : dy: -0.236, dz: 0.0, : Press the Enter key.

    To set the name:1 In the Properties window Name field type: FemaleTeflon2 Click the OK buttonTo fit the view:1 Click View>Fit All>Active View.

    Complete the Vacuum ObjectTo select the objects Female, MaleTeflon, FemaleTeflon1 Click Edit>Select>By Name

    The Select Object dialog apepars.2 Select the objects named: Female, MaleTeflon, and

    FemaleTeflon

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    3 Click the OK buttonTo complete the vacuum objects:1 Click Modeler>Boolean>Subtract

    The Subtract dialog appears.2 For Blank Parts, select: Female3 For Tool Parts, select: MaleTeflon, FemaleTeflon4 Check Clone tool objects before subtract.5 Click the OK button

    Complete the ModelTo complete the model:1 Click Edit>Select>By Name

    This opens the Select Object dialog.2 Select the objects named: Conductor1, Female, MaleTef-

    lon, and FemaleTeflon.3 Click the OK button.

    This closes the dialog and selects the objects.4 Click Modeler>Boolean>Subtract

    This opens the Subtract dialog.Select as Blank Parts: Female, FemaleTeflon, MaleTeflonSelect as Tool Parts: Conductor1 Check: Clone tool objects before subtract.

    5 Click the OK button

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    Boundary DisplayTo verify the boundary setup:1 Click HFSS>Boundary Display (Solver View)

    This opens the Solver View of Boundaries dialog.2 Toggle the Visibility check box for the boundaries you wish

    to display.The background (Perfect Conductor) is displayed as the outer boundary. The Perfect Conductors are displayed as the smetal boundary.You click View>Visibility to hide all of the geometry objects. This makes it easier to see the boundary

    3 Click the Close button when you are finished

    Analysis Setup

    Creating an Analysis SetupTo create an analysis setup:1 Click HFSS>Analysis Setup>Add Solution Setup

    This opens the Solution Setup dialog.2 With the General tab selected set the Solution Frequency:

    8.1 GHzSet the Maximum Number of Passes: 10

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    Set the Maximum Delta S: 0.02

    3 Click the Options tab:4 Set the Minimum Converged Passes: 25 Click the OK button

    This closes the dialog and creates an Analysis setup in the Project tree.

    Adding a Frequency SweepTo add a frequency sweep:1 Click HFSS>Analysis Setup>Add Sweep

    This opens an Edit Sweep dialog for Setup1.Sweep Type: FastFrequency Setup Type: Linear CountStart: 0.1GHzStop: 8.1GHzCount: 801

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    Save Fields: Checked

    2 Click the OK button

    Save ProjectTo save the project:1 In an HFSS window, click File>Save As.2 In the Save As window, type the Filename: hfss_coax3 Click the Save button

    Analyze

    Model ValidationTo validate the model:1 Click HFSS>Validation Check2 Click the Close button

    Note: To view any errors or warning messages, use the Message Manager.

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    AnalyzeTo start the solution process:1 Click HFSS>Analyze

    Solution DataTo view the Solution Data:1 Click HFSS>Results>Solution Data

    To view the Profile click the Profile Tab.

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    To view the Convergence click the Convergence Tab

    Note: The default view is for convergence is Table. Select the Plot radio button to view a graphical representations of the convergence data.To view the Matrix Data click the Matrix Data TabNote: To view a real-time update of the Matrix Data, set the Simulation to Setup1, Last Adaptive

    2 Click the Close button

    Create Reports

    Create Terminal S-Parameter Plot vs. PassNote: If you create this reportbefore or during the solution process, a real-time update of the results are displayed

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    To create a report:1 Click HFSS>Results>Create Terminal Solution Data

    Report>Rectangular Plot

    This opens the Report window:Solution: Setup1: AdaptivePassPrimary Sweep: PassCategory: Variables: Terminal S ParameterQuantity: St(p1_T1), St(p2_T1),Function: dB

    2 Click the New Report button

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    3 Click the Done button to close the Report dialog.

    Create Terminal S S-Parameter Plot - MagnitudeTo create a report:1 Click HFSS>Results>Create Terminal Solution Data

    Report>Rectangular Plot

    Solution: Setup1: Sweep1Domain: SweepCategory: Terminal S ParameterQuantity: St(p1,p1), St(p1,p2),Function: dB

    2 Click the Add Trace button3 Click the Done button

    Create Terminal S S-Parameter Plot - PhaseTo create a report:1 Click HFSS>Results>Create Terminal Solution Data

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    Report>Rectangular Plot

    Solution: Setup1: Sweep1Domain: SweepCategory: Terminal S ParameterQuantity: St(p1,p1), St(p1,p2),Function: ang_deg

    2 Click the New Report button

    3 Click the Done button

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    Field Overlays

    Create Field OverlayTo create a field plot:1 Using the History Tree, expand Planes and select Global:YZ

    2 Click HFSS>Fields>Plot Fields>E>Mag_EThis opens the Create Field Plot dialog. Make the follow-ing selections:Solution: Setup1 : LastAdaptiveQuantity: Mag_EIn Volume: AllObjects

    3 Click the Done button

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    To modify a Magnitude field plot:1 Click HFSS>Fields>Modify Plot Attributes

    This opens the Select Plot Folder dialog.2 Select: E Field and click the OK button

    The E-Field dialog opens.3 Click the Scale tab4 Select Use Limits5 Min: 1.06 Max: 1000.07 Scale: Log8 Click the Close button

    Edit SourcesTo Modify a Terminal excitation:1 Click HFSS>Fields>Edit Sources2 Select p2_T1 from the Edit Sources window3 Check the Terminated box4 Click the OK buttonTo Select the Electric Field plot:1 Expand the Project tree2 Expand the Field Overlays3 Click on the E Field or Mag_E1 to4 display the field plot

    Field AnimationsTo Animate a Magnitude field plot:1 Click View>Animate2 In the Swept Variable tab, accept defaults settings:

    Swept variable: PhaseStart: 0degStop: 180degSteps: 9

    3 Click the Close button

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