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Type: Posts; User: pragash

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  1. Closed: TRL calibration kit for PNA series (E8358A)

    i have fabricated TRL calibration kits for my design. however, i figured that it's not straight forward to do TRL calibration in the PNA E8358A. we need to add new calibration kit before using them...
  2. Closed: Re: [CST] How to simulate Radiated Spurious Emissions (RSE)

    i would like to predict radiated spurious emission test failure via EMC/EMI simulation.
  3. Closed: [CST] How to simulate Radiated Spurious Emissions (RSE)

    i know there is a way to simulate radiated spurious emissions using CST. can anyone have methodology documents or know how to do it step by step?
  4. Closed: [ADS] ADS simulation not using graphic card memory

    im doing momentum or EM simulation in ADS. however, my graphic card memory is not used in the simulation. that graphics card is stated in ADS simulation acceleration and full fill the acceleration...
  5. Closed: Re: [ADS]method to establish correlation between LNA EM simulation and circuit simula

    I was looking for a methodology to optimize the circuit with parasitics. thanks for your input. I really appreciate it.
  6. Closed: Re: [ADS]method to establish correlation between LNA EM simulation and circuit simula

    I got what you mean now. actually, the layout follows good RF layout guidelines which avoid long interconnects and parallel ground plane underneath component pads and so on. However, parasitic...
  7. Closed: Re: [ADS]method to establish correlation between LNA EM simulation and circuit simula

    could you please explain this further? are you asking to measure parasitic inductance and capacitance of the each transmission line?
  8. Closed: [ADS]method to establish correlation between LNA EM simulation and circuit simulation

    it's often easy to design an LNA circuit by doing impedance matching using "Smith chart utility" tool in ADS. In the layout simulation, due to parasitic introduced by the layout, the layout...
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    Closed: Re: [ADS] ADS netlist error

    sorry, solved the problem myself. the goal which i set to optimize impedance looking into port 1 is wrong. i set wrong experssion in the goal. i set complex impedance at 1st which is the mistake....
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    Closed: [ADS] ADS netlist error

    154128

    netlist error above appearing on my Momentum simulation. Please let me know how to solve it. thanks.
  11. Closed: Re: How to make cluster computer with MSI desktop and MSI laptop

    Any idea for that kind of software?
  12. Closed: How to make cluster computer with MSI desktop and MSI laptop

    i have MSI WT72 laptop and a desktop which uses X99A XPOWER AC (MS-7881) mother board. How can interface both computers and make cluster computer?

    Note: Thunderbolt 3 (USB-C) is only available in...
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    Hi ktr,
    looks like you are stuck. the basic rule of thumb is design an interconnect which does not introduce parasitic inductance to the design. since you have already designed it, you are trying to...
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    what is your frequency of operation?
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    what is the best impedance we should design the interconnect so that it won't form an inductor? 50ohm? or 75ohm?
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    Dr Volker, how did u extract the exact C associated with the coil?
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    attached the s2p as requested. thanks.

    151797
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    thank you so much Dr. Volker. i have created s2p file. please refer below.

    151771
  19. Closed: Re: [ADS] designing series coils (spiral inductors)

    thank you so much Dr Volker. i will look at scalable arwork cell for my design.
  20. Closed: Re: [ADS] designing series coils (spiral inductors)

    Hi FvM,
    Yes, I'm using MIND. i understand ADS will only give the calculated pure inductance for the MIND. it doesn't take into account the coupling between windings and coupling between the coil on...
  21. Closed: [ADS] designing series coils (spiral inductors)

    the value of my coil (spiral inductor) is very high. due to this, I would like to reduce the size of the coil by replacing it with multiple coils connected in series. my PCB board has 6 layers. each...
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    Dr.151761 Volker,
    actually, I don't know how to generate an s-parameter file from the ADS. due to that, i sending you my coil parameters. you can simulate it and get the S-parameters. sorry for the...
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    could you please clarify what is ccdist manual?
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    this inductor connected in series and not shunt to ground. Pure inductance and resistance extraction (Y12) shows +ve ind which is correct. shunt to ground inductance (Y11) shows negative inductance...
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    Closed: Re: need 7pF to 10pF at 2.5GHz

    mistake.. pls ignore

    - - - Updated - - -

    dr volker,
    i have one last question. im getting different inductance when i simulate using a different set of formulas. Please let me know which one is...
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