reg: cpw feed in CST

hi everyone,for the last one year i am working on designing a UWB antenna in cst. i have few doubts on cpw port dimensions in cst mw studio.

1. is my port dimensions to excite the cpw are correct ? if not please correct me
2. what are the details we need to consider before defining wave port dimension to excite CPW
3. i have checked E-Field distribution of the defined wave port in 2D results. it shows line impedance of around 50 ohms at 6.8GHz. should i obtain the line impedance equal to 50ohms for all the frequencies ?

Your wave port dimensions are wrong. I will send the edited one to your mail.

May you tell how I can calculate wave port dimensions

sree479 said:

Your wave port dimensions are wrong. I will send the edited one to your mail.

Click to expand...

sree sir please sent the corrected one, i have been waiting for your post ...thank you

...try it...!!!

fiwi said:

View attachment 131525...try it...!!!

Click to expand...

hi....thank you for your reply, you drawn a red box in z11 vs frequency, what it conveys ?... in the same graph at different frequencies we are getting different z11 cant we get the same value through out the frequency range.

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sandeepkiranv said:

hi....thank you for your reply, you drawn a red box in z11 vs frequency, what it conveys ?... in the same graph at different frequencies we are getting different z11 cant we get the same value through out the frequency range.

Click to expand...

please post the cst design file, can u write the cpw wave port dimensions