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Recent content by xidian123

  1. X

    how do I create a time-related resistor in ADS ?

    thanks for your response. But as you said, it will not run as an ideal switch . There is an ideal switch in ADS, called SPDT_Dynamic. Further more,I still don't know how to make it work as a time-related switch, by using a function. It seems that the instruction "if ...else" can not be used in a...
  2. X

    [SOLVED] how do I create a time-related resistor in ADS ?

    oh,thank you. I find it. I didn't know these components before. ^!^
  3. X

    [SOLVED] how do I create a time-related resistor in ADS ?

    Hi all, how do I create a time-related resistor in ADS ? I want to make a switch in transient simulation，as the picture shown below(just for explained,not correct,violation with rules) Appreciate your advice.Thanks.
  4. X

    how do I create a time-related resistor in ADS ?

    Hi all, how do I create a time-related resistor in ADS ? I want to make a switch in transient simulation，as the picture shown below(just for explained,not correct,violation with rules) Appreciate your advice.Thanks.
  5. X

    in ADS, how to make array operation of dependent variables?

    I also want to know . Could anyone help ?
  6. X

    Dual Gate FET Mixer question

    Could anyone kindly give me an ADS sample design ? Dual Gate FET Mixer. Thank you~~
  7. X

    ADS - How to display a point

    Hi ,I have a simple question .How to display a point on smithchart in the Data Display of ADS. What is the correct form of my data?Such as : A1=20+j*20 What form I should write in the Eqn ?If display A1 directly ,A1 would be plot in a wrong place . Ths~~
  8. X

    ADS - about function- dbpolar()

    Thanks a lot~~~~So great~~~
  9. X

    ADS - about function- dbpolar()

    help~~~~~
  10. X

    ADS - about function- dbpolar()

    Hi ,I met a strange problem. Why the dbpolar() is not valid in my design ?All other function are OK~As pho below~ Is there any one met the same problem ? BTW,how to display this point, 0.23/14 (dB/ang) ,on the smith chart ???? thanks very much~~
  11. X

    A closed loop expression of OP

    Thank you very much ,I get it ~~~ Hfor=part of Vi appearing at the opamp input (if Vo=0) Hback=part of Vo appearing at the opamp input (if Vi=0)
  12. X

    A closed loop expression of OP

    As the pic below,when calculate the Gforward , should the point A be disconnected ?Or how ? Pls kindly express the process in detail. Ths ~~~
  13. X

    A closed loop expression of OP

    An OP as fig1. The Gclosed=Vo/Vi=-Rf/R1 Now I want to write the transfer function in form of fig2. So ,the forward transfer function and feedback loop transfer function can be writed as below Gforward=-A (A is the voltage gain of OP) β=R1/(R1+Rf) But the result is wrong~~Who could kindly...
  14. X

    ADS _ PLL Simulation question

    pll ads just leave it default
  15. X

    question - PFD noise equal to the PFD leakage current ?

    pfd noise Is the PFD_inoise in the attached pic. equal to the PFD leakage current ?? If not ,What does it mean ? (ADS PLL Design Guide) thanks..
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