微波EDA网,见证研发工程师的成长!
首页 > 研发问答 > 微波和射频技术 > 电磁仿真讨论 > Matching port in Agilent MOMENTUM

Matching port in Agilent MOMENTUM

时间:03-31 整理:3721RD 点击:
Hi all,

How to define, in Momentum, a port having impedance matching with the characteristic impedance of the linked network ?

I have to simulate a two ports network over a wide range of frequencies and I would like to close the output port on a matched impedance; anyway, when I define a port, I can indicate just a single value of impedance

Export layout in to schematic by component create look alike option.
Now use REf net design termination in schematic.

My problem is the following:

I have drawn a layout in Momentum: 2 square coils (in cond & cond2) with some substrates in between. Then I have defined 2 pairs of ports for the 2 coils: each pairs is realized using an internal port and a ground reference port.

Which value should I use for the impedance of the two internal ports ?
The default one is 50 Ohm

Now I would like to make a S-parameter calculation using Momentum: should I close the two pairs of ports on two impedances matching the characteristic impedance of the network ?

Thanks a lot for your precious help! :D

Problem is not understood by me.

Added after 50 seconds:

Some one please help him.

Hi,

I have had a long discussion with an Agilent expert and now I have the ideas a little more clear:

S-matrix depends only by the network and not by the source/load impedance.

Setting the input & output ports at 50 Ohms will return me a S-matrix normalized to 50 Ohms (S_50). Setting the input & output ports at 75 Ohms will return me a S-matrix normalized to 75 Ohms (S_75)... and so on...

I can pass from one to the other with some calculus and that all, I don't need to close my network on matched loads to run simulations.

I hope I have correctly understood!

上一篇:Convergence in HFSS.
下一篇:最后一页

Copyright © 2017-2020 微波EDA网 版权所有

网站地图

Top