Problem in ADS momentum

[xcalvin]

I am designing a antenna and want to add a matched load 50ohm at the end of the antenna.

How can I add a load to the antenna in layout page. I could not find such button.

Can anyone show me?

Thank you!!!!

 

[volker_muehlhaus]

Just add a 50 ohm port.

 

[xcalvin]

I want to add a matching load not a port~~~~

 

[volker_muehlhaus]

I want to add a matching load not a port

Please understand that the port impedance is the match.

You can leave it as a port (load impedance = port impedance) or externally connect other impedances using the s-parameters.
Some EM tools can insert "components", but internally they do exactly this: place a port and then connect component S-parameters at the port.

 

[xcalvin]

I added a 50ohm resistor at the end of the meander line antenna in layout of ADS momentum and simulated it.
however, It did not work. The result was same as before(without a resistor), I checked it 3D view, the resister did not show in 3D view.
What is the problem?
Thank you!

 

[volker_muehlhaus]

Of course, it does not work.

1. It makes no sense to place an ideal ground symbol in the EM model. If you want to create a ground connection in EM, you must draw a ground connection (metal /via).
2. As you can see, there is no resistor in the EM model. The resitor is an circuit model. To draw a resistor for EM, define a resitive metal sheet (manually or using TFR schematic element).
3. Ask youself: What is the ground that you want to connect the resitor to? Can current flow in the EM model through the resistor path that you have modelled?

 

[xcalvin]

I have to design a 900Mhz meander line antenna(background is ground). I want to eliminate the ripple beside 900Mhz pole. I want to add a matching load at the end of the antenna(top) to eliminate the ripple.

Could to tell me what steps should I do?

Many thanks!

design of antenna

simulation result S11