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    Ads momentum simulation

    Good afternoon!
    I have elaborated topology for my LNA antenna amplifier, and after that i tried simulate my amplifier with topology in schemanic. And DC results for biasing transistors too much differ from those without topologie. What can cause difference?
    Could you also give me a link for use Ads Momentum and EM simulation?
    I have removed all breaks in topology. Now i guess it can be in VIA elements(that is holes for connecting to ground)
    The vias is cond layer(as the top layer), is it wrong? Layer for ground is cond2.

    •   Alt2nd January 2017, 19:25

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    Re: Ads momentum simulation

    Have you started your simulation from 0 Hz ??



    •   Alt2nd January 2017, 20:10

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    Re: Ads momentum simulation

    Yes, the frequency plan from 0Hz to 5GHz.



    •   Alt2nd January 2017, 20:56

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    Re: Ads momentum simulation

    Quote Originally Posted by Dragon65 View Post
    Yes, the frequency plan from 0Hz to 5GHz.
    For DC, RF Mode should be chosen.Even-tough there are still problems ( possible ) connect DC paths using with Ideal RF Choke but RF mode and well organized Ports and Meshing should work at DC.



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    Re: Ads momentum simulation

    Should I incorporate this ideal RF chokes in schematic and create topology with them?



    •   Alt11th January 2017, 20:36

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    Re: Ads momentum simulation

    >>>Could you also give me a link for use Ads Momentum and EM simulation?
    Below are two references

    1. Momentum Basics : http://cp.literature.agilent.com/lit...um_Basics.html
    2. ADS Cookbook : http://cp.literature.agilent.com/lit...991-1516EN.pdf



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