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.

See co-polarization and x-polarization in IE3D software

Status
Not open for further replies.

rf-en

Junior Member level 1
Junior Member level 1
Joined
Jul 9, 2007
Messages
16
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,283
Activity points
1,424
Hi all ,

Could anybody tell me , how can i see co-polarization and x-polarization when i have 2 port in IE3D software?

Please tell me perfectly this process.

Best Regards
 

Hi, Rf-en:

co-pol and cross-pol are artificial. You can always pick one polarization and define it as co-pol and the other one is the cross-pol. As a general tool, IE3D does not tell you which one is co-pol and which one is cross-pol because of the above reason. You need to define it by yourself. Regards.
 

    rf-en

    Points: 2
    Helpful Answer Positive Rating
Hi Dr.Jian,
Thank you for your attention.
Could you tell me, How can I pick one polarization and define it as co-pol and other one it the cross-pol Please in IE3D ?
For example , Can I pick E-theta at phi=0 for co-pol and pick E-phi at phi=0 for cross-pol in the 2D-Pattern view ?
Or could you give a example?
Regards
 
Hi, rf-en:

Yes. It is what you need to do. If you think E-theta at phi = 0 is your co-pol, then E-phi at phi = 0 is your cross-pol.

Traditionally, designers will consider the stronger E-field pol as the co-pol and the weaker E-field pol as the cross-pol. Given an antenna with its properites well defined in a specific frequency range, we can tell what its col-pol and what its cross-pol are. However, from the viewpoint of generality, we can't define them automatically. Just a well-defined antenna, when you change its frequency to other than the regular frequency, its polarization will change. You may even have a case with E-theta and E-phi higher at different angles for the same cut. Apparently, we can't provide a general definition of co-pol and cross-pol unless it is for a some very simple antenna like a dipole because the polarization of a general antenna may change with many different parameters and situations. A designer has to decide on it. A designer should check the polarized field at a cut to see which one is higher and which one is lower (E-theta vs. E-phi, E-left vs. E-right, etc.) and decide which pol is the co-pol and which one is the cross-pol.

Regards,

Regards,
 

    rf-en

    Points: 2
    Helpful Answer Positive Rating
Yes Jian,

but some polarization are "standard" like (E-th, E-Phi) or (E-RHCP, E-LHCP).
IE3D is powerful EM software, but in selecting the polarization and viewing beam cuts is not so easy (you have to go up and down in a long list of checkbox !!).

But more important for people working in the antena field, IE3D does not have the linear polarization concept (ludwig 3-rd definition). I suggest Zeland to introduce it in the basic polarization, even because to achive X and Y pol is easy as for RHCP and LHCP from Th e phi.

Bye
 

    rf-en

    Points: 2
    Helpful Answer Positive Rating
Hi, juppydu:

Thank you for your suggestion! Regards,
 

    rf-en

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top