Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Need help for HFSS design

Status
Not open for further replies.
P

pergassus

Newbie level 5
Joined
Aug 3, 2010
Messages
10
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
canada
Activity points
1,352
Hello

I'm new user of HFSS and I want to design a conformal antenna. my design consist to drow a cylinder wich composed of GND of outer raduis R and inner radius R-0.0001 then I drow another cylinder of outer raduis R-0.001 and inner radius R-0.0001-H where H is the heigh of the substrat. the DR is above the GND and the microstrip is under the substrat. in the CST microweave studio, there is application wich allow te bend the MS on any curved surface (bend shit) but I can found this application in HFSS. So can you tell me please how can I do to solve this problem????. another things, is there an application wich allow the move and rotate the local coordinate??????? I hope that you can help me

Thanks
 

Attachments

  • conformal-dr.rar
    37.1 KB · Views: 129

If I get what you are trying take a look at Boolean>Imprint Projection.

You can rotate a coordinate system by parameterize the coordinate system using the "X AXIS" and "Y POINT" for the coordinate system. Use sin and cos to set the angle and a parameter to define the angle (I think it defines it in radians).
 
Hi

Thank you for message and for bend the MS on the Substrat, it works great. But for the rotation of the local coordinate, I haven't foud where can I enter the angle of rotation. so please, can you tell me how can I parametrize my local coordiante.

Thanks again for your help
 

Here is an example to set up a rotating relative coordinate system about the Z axis. This is at least how I do it.

1. Create a relative coordinate system
2. Edit the Coordinate system. The best way is to double click the coordinate system to get the properties window (trying to use the docked properties window will give you an error when you try to parameterize it)
3. Enter for X Axis "cos(A) ,sin(A) ,0mil" define A as a variable using deg or radians
4. Enter for Y Point "cos(A+pi/2) ,sin(A+pi/2) ,0mil"

I 've added a file of the result.

View attachment CSRotation.zip
 

    V

    Points: 2
    Helpful Answer Positive Rating
Thank you very much for all these informations. sorry there is one question about the rotation. for your example the Axis of rotation is Z. can I change it to Y one because in my design, I must rotate the local coordiante about Y axis and design the Dielectric Resonator following the Z axis. I hope that you have understand what I want to tell you.

Thank's
 

Sure, just swap the Y and Z terms in both in bother the X axis and Ypoint paramters to rotate around the Y axis.
 

Thank you irnenginer for your help. I have do it before you send me the message and it works. my problem for this design is the excitation. in CST, we have the application select point, edge or face, we select a point on the center of the line and the opposite point on the GND, then we select the discret port and automatically, it placed between the two point. here with HFSS, I try to connect the MS line with the GND with Lumped port but doesn't work. the only thing that work is when I select at both ends of the line, the lumped port is defined. So please can you tell me if my solution is correct or tell me how can I put the Lumped port for my design. I hope that you have understand what I want to tell you

Best regard
 

I am not sure I totally understand what you are asking. Usually I use wave ports for microstrip launches. Assuming you are using drive modal (which is also what I tend to use on microstrip structures), you want to define the integration line between the ground and the MSline. Maybe post your file with the port defined.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top