Search:

Type: Posts; User: pancho_hideboo

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Replies
    6
    Views
    146

    Closed: Re: Two IP3 related question

    Multitone HB Analysis is based on aperiodic function expansion.

    Formulation of Keysight ADSsim uses Freq[1] as special meaning.
    This is dragging from MDS which is ancestor of ADS.

    See...
  2. Closed: Re: What is the definition of the efficiency in energy harvesting circuit ??

    See datasheet of https://e-peas.com/types/energy-harvesting/
  3. Closed: Re: What is the definition of the efficiency in energy harvesting circuit ??

    It depends on what energy you use.

    Solar, Vibration, Thermal, RF, etc.
  4. Replies
    6
    Views
    146

    Closed: Re: Two IP3 related question

    Local frequency has to be Freq[1] in Keysight ADSsim.

    Show me netlist regarding HB Analysis settings.
    I want to know order and maxorder.

    Try followings as Test.
    Freq[1]=2436 MHz (Local...
  5. Closed: Re: Stability of a circuit and its role in design steps

    You have to learn followings.

    - Uncoditionally Stable
    - Conditionally Stable

    See https://designers-guide.org/forum/YaBB.pl?num=1218635777/0#5

    Conditionally Stable.

    Large width results in...
  6. Replies
    6
    Views
    146

    Closed: Re: Two IP3 related question

    It depends on application of your LNA.

    For example, you can use input power at almost 1dB gain compression point, if your LNA application is narrowband and there is no adjacent channel.

    It...
  7. Replies
    5
    Views
    143

    Closed: Re: PAE contours in Cadence spectre

    Do you design ?
    Isn't it EDA Tool Play ?
  8. [SOLVED]Closed: Re: Rational Approximation of Gaussian LPF

    I can get same result as ADS.

    function [z, p, k] = my_gaussianap(order, wp, Ap_dB)
    s = tf('s');
    T2 = 0;
    for n = 0:order
    T2 = T2 + (-1)^n * s^(2*n) / factorial(n);
    end

    z = zero(T2);
  9. Replies
    5
    Views
    143

    Closed: Re: PAE contours in Cadence spectre

    Surely understand general note in https://www.edaboard.com/showthread.php?384620#35

    - Don't mix up Simulation with Post Processing.
    They are completely different phase.

    Contour plots are...
  10. [SOLVED]Closed: Re: Rational Approximation of Gaussian LPF

    Thanks for good clue.

    I think they are opposite.

    Why does top(odd order case) have zero at s=0 ?

    I can calculate Taylor series expansion of exp(p^2), as eq. (13-73) in start of this thread...
  11. [SOLVED]Closed: Re: Rational Approximation of Gaussian LPF

    Attached figures show characteristics of Gaussian-LPF and Bessel-LPF in Keysight ADS.
    S(2,1), delay(2,1) : Gaussian-LPF
    S(4,3), delay(4,3) : Bessel-LPF

    I know what polynomials are used for...
  12. Replies
    2
    Views
    234

    Closed: Re: Even Order Elliptic LPF

    We can get LC values for even order case with applying such frequency conversion in the following.
    https://rf-tools.com/lc-filter/
  13. Replies
    0
    Views
    75

    Closed: Selection of Zeros of S11(s)

    We can determine S11(s) from S21(s).

    S11(s)*S11(-s) = 1 - S21(s)*S21(-s)
    Zin(s) = {1 + S11(s)} / {1 - S11(s)} or
    Zin(s) = {1 - S11(s)} / {1 + S11(s)}

    Here two options exist for S11(s).
    (1)...
  14. [SOLVED]Closed: Re: Cadence Spectre CIW Warning and Error (ADE-3023)

    No.

    spectre is not located there.

    Enter “which spectre” in Linux prompt.
    Then show me result.
  15. [SOLVED]Closed: Re: Cadence Spectre CIW Warning and Error (ADE-3023)

    Show me location of “spectre”.

    Enter getShellEnvVar("PATH") in CIW.
    Show me result.
  16. [SOLVED]Closed: Re: Drawing simple Data in Smith ADS smith Chart

    It seems that you can understand what you plot in a start of this thread, https://www.edaboard.com/showthread.php?384833#1
    ADS simply plots minimum=0.1+j*0 and maximum=3.0+j*0.

    It was very long...
  17. [SOLVED]Closed: Re: Drawing simple Data in Smith ADS smith Chart

    You are still misunderstanding.
    And you can not understand both ADS and Smith Chart at all.

    Wrong.

    Full circles and Partial circles are no more than sub grids for ADS Plot.
    ADS plots data...
  18. Closed: Re: How to plot Loadline in cadence spectre

    See https://www.edaboard.com/showthread.php?354052
  19. Closed: Re: How to plot Loadline in cadence spectre

    I don’t know what postprocessing tool you use.

    However almost all postprocessing tool have ability of X-Y plot.
    Use X-Y plot.

    If you prefer static load line, do DC analysis.
    If you prefer...
  20. [SOLVED]Closed: Re: measuring the parasitic capacitance at a certain node in cadence

    What do you want to mean ?
    Describe correctly with correct terminology.

    If you use Cadence Spectre, use "info what=captab" analysis in Cadence Spectre.

    Surely see...
  21. [SOLVED]Closed: Re: Drawing simple Data in Smith ADS smith Chart

    However this thread's issue is software implementation.

    See attached figure.

    Very fortunately it is simply drawing any complex value aho.

    boke=(1+aho)/(1-aho)
    Marker calculates and shows...
  22. [SOLVED]Closed: Re: measuring the parasitic capacitance at a certain node in cadence

    I don't know what you want to mean by "in a schematic in cadence" at all.

    However Synopsys HSPICE have following.

    .OPTION CAPTAB
    Adds up all the capacitances attached to a node and prints a...
  23. Closed: Re: Response of the TLINE for different frequencies and lengths

    I used Cadence Spectre from Cadence ADE.
    You may use "sp Analysis" instead of "ac Analysis".

    "test_circuitslave_2.scs"
    // Generated for: spectre
    // Generated on: Jun 17 11:59:19 2019
    // Design...
  24. Closed: Re: Response of the TLINE for different frequencies and lengths

    I use Synopsys HSPICE from Cadence ADE.
    You may use ".LIN Analysis" instead of ".AC Analysis".

    "test_circuitslave_1.spi"
    ** Generated for: hspiceD
    ** Generated on: Jun 17 11:47:47 2019
    **...
  25. Closed: Re: Confused - transmission line component in Virtuoso and ADS

    It gives correct value if port impedance is pure real number.
    However it never gives correct value, if port impedance is complex number.

    See https://www.edaboard.com/showthread.php?378353#8...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4