transmission line even mode odd mode

Hi ,everyone

using hfss,how to set even- and odd-mode excitation for coupled microstrip lines?

looking forward to your replies!

babyang

pay attention to this thread

https://www.edaboard.com/ftopic271276.html


It is a subject that comes up regularly on this site. Search on CPW for more details.

I saw your e-mail.

Have you looked over the threads in the forum?

There are also useful books by Simon and by Waddel describing various transmission line structures.

Your best bet is to look into those.

oh，azulykit
the main problem is I cannot use HFSS to get the even-mode and odd-mode impedance and S-parameters I wanted after trying many times,so I am undecided about my model's setup.

I need some more details for designing in HFSS ..

regards

Added after 6 minutes:

oh，azulykit
the main problem is I cannot use HFSS to get the even-mode and odd-mode impedance and S-parameters I wanted after trying many times,so I am undecided about my model's setup.

I need some more details for designing in HFSS ..

regards

Added after 10 minutes:

oh，azulykit
the main problem is I cannot use HFSS to get the even-mode and odd-mode impedance and S-parameters I wanted after trying many times,so I am undecided about my model's setup.

I need some more details for designing in HFSS ..

regards

@babyang,

attach your model, let me see if i can help...

Can u please write the name of the book or any other recommended tutorial.

(1) Choosing the driven terminal (not driven modal);
(2) draw two terminal lines when setting the waveports;
(3) after simulation, you can get the differential impedance Zdiff and common impedance Zcomm. Then the even mode impedance Zeven = 2*Zcomm, the odd mode impedance Zodd = 0.5*Zdiff.