Please confirm one problem in ADS.

[Berend Kunze]

The result of examining the entrance resistance of the antenna with a network analyzer
It was 24.5+7.5j.
As a result of simulating in ADS to see the S11 characteristics of the antenna, accurate results do not come out.
What could be the cause? Please help.

 

[stenzer]

Hi,

it's quite a while ago when I used ADS, so I'm not really familiar with it. I would expect quite a different solution based on the calculation of the reflection coefficient by S11 = (Zx - Z0)/(Zx + Z0), where Z0 = 50 Ohm.

Is L_3 in your circuit represented by an open-circuit?

BR

 

[Berend Kunze]

Thank you for your interest in my problem.
We fixed this issue today.
I am new to this site and have few friends.
I am a radio engineer and electrical engineer.
If there is a problem that needs to be solved in the future, I would like to solve it by connecting with each other.
thank you

 

[stenzer]

Hi,

please share your solution, so other ones may benefit of it.

BR

 

[Berend Kunze]

Sorry, I joined here a few days ago, so I'm not familiar with face-to-face yet.
You're trying to make your needs come true, but it doesn't work out.
Please help me with some action.

 

[volker@muehlhaus]

If there is a problem that needs to be solved in the future, I would like to solve it by connecting with each other.

Seriously? If you need personal support, sign up for ADS traininbg and ADS support. Both are payed services. The forum is meant to share information for the COMMUNITY, not to give YOU free personal support.

please share your solution, so other ones may benefit of it.

He replaced L3 by an open circuit (icon: deactivate) instead of shorting it (icon: deactivate and short).