Model of fourier component in analogLib library

I doubt you need a model. If you look at "spectre -h fourier" you'll see that all the model parameters are also available as instance parameters. The only benefit of a model is that you can then predefine the model parameters in an include file and reference them by using the model name.

Even if you did want to use a model, nobody can provide it for you because the parameters are completely dependent upon what you want to do.

Kind Regards,

Andrew.

Thank you. 

I am having problems using the component in analogLib. I also tried model one in "spectre -h fourier" but I still doesn't work.

I run transient of a common source amplifier and connected the output with fourier (connected drain with plus and negative of fourier with ground).

When simulation end, I open psf file to plot signal. It is clear that there is the desired signal in fourier analysis folder but this signal has nothing, when I plot there is nothing in it. 

Without knowing what you've set up, it's really hard to know what's wrong.

Can you post the complete spectre.out output log, and ideally the tran analysis and fourier component from your netlist (input.scs)?

This way I can tell what version you're using, whether there were any relevant warnings, and also what the transient and fourier setup was. Even this may not be enough, and you may be better off going to customer support, but there may be a shot of figuring it out from just this information.

Regards,

Andrew.

Thanks for your kindness.

Here are the netlist and spectre.out.

1. input.scs

// Generated for: spectre
// Generated on: Mar 21 08:39:18 2016
// Design library name: Huan
// Design cell name: CSAmp
// Design view name: schematic
simulator lang=spectre
global 0 vdd!
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio3
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio_dnw
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=dio
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_sa
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfind
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rtmom
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bbmvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfesd
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_mim
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfrtmom
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_hri
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfres_rpo
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3vna
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_m
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmos
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmim
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfjvar
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3m
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_res
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bip3
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_bip
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_3v
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfmos33
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_na
include "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" section=tt_rfsbd

// Library name: Huan
// Cell name: CSAmp
// View name: schematic
V0 (vdd! 0) vsource dc=1.8 type=dc
V1 (net1 0) vsource dc=600m mag=1m type=sine ampl=1m freq=1M
M0 (net7 net1 0 0) nch l=180n w=2u m=1 ad=9.6e-13 as=9.6e-13 pd=4.96u \
        ps=4.96u nrd=0.135 nrs=0.135
R0 (vdd! net7) resistor r=10K
FOUR0 (net7 0) fourier fund=10M harms=5
simulatorOptions options reltol=1e-3 vabstol=1e-6 iabstol=1e-12 temp=27 \
    tnom=27 scalem=1.0 scale=1.0 gmin=1e-12 rforce=1 maxnotes=5 maxwarns=5 \
    digits=5 cols=80 pivrel=1e-3 sensfile="../psf/sens.output" \
    checklimitdest=psf
tran tran stop=1m errpreset=moderate write="spectre.ic" \
    writefinal="spectre.fc" annotate=status maxiters=5
finalTimeOP info what=oppoint where=rawfile
modelParameter info what=models where=rawfile
element info what=inst where=rawfile
outputParameter info what=output where=rawfile
designParamVals info what=parameters where=rawfile
primitives info what=primitives where=rawfile
subckts info what=subckts  where=rawfile
saveOptions options save=allpub

2. spectre.out

Cadence (R) Virtuoso (R) Spectre (R) Circuit Simulator
Version 13.1.1.049 64bit -- 15 Apr 2014
Copyright (C) 1989-2014 Cadence Design Systems, Inc. All rights reserved worldwide. Cadence, Virtuoso and Spectre are registered trademarks of Cadence Design Systems, Inc. All others are the property of their respective holders.

Includes RSA BSAFE(R) Cryptographic or Security Protocol Software from RSA Security, Inc.

User: root   Host: iclab   HostID: 7F0100   PID: 4413
Memory  available: 2.9312 GB  physical: 8.1514 GB
CPU Type: Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
          Processor PhysicalID CoreID Frequency Load
              0         0        0     1600.0    15.5
              1         0        1     1600.0    16.1
              2         0        2     1600.0    16.0
              3         0        3     3201.0    16.8


Simulating `input.scs' on iclab at 8:39:19 AM, Mon Mar 21, 2016 (process id: 4413).
Current working directory: /root/simulation/CSAmp/spectre/schematic/netlist
Environment variable:
    SPECTRE_DEFAULTS=-E
Command line:
    /usr/cadence/MMSIM131/tools/bin/spectre -64 input.scs +escchars  \
        +log ../psf/spectre.out +inter=mpsc  \
        +mpssession=spectre26_3883_141 -format psfxl -raw ../psf  \
        +lqtimeout 900 -maxw 5 -maxn 5
spectre pid = 4413

Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libinfineon_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libphilips_o_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libphilips_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libsparam_sh.so ...
Loading /usr/cadence/MMSIM131/tools.lnx86/cmi/lib/64bit/5.0/libstmodels_sh.so ...
Reading file:  /root/simulation/CSAmp/spectre/schematic/netlist/input.scs
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/configs/spectre.cfg
Reading file:  /root/Design6/Simulation_Efficiency/TSMC18/models/spectre/rf018.scs

Warning from spectre in `ndio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18628: The inline subckt definition `ndio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `pdio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18645: The inline subckt definition `pdio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `nwdio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18662: The inline subckt definition `nwdio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `endio_3', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18679: The inline subckt definition `endio_3' does not contain any inline components. The `inline' qualifier will therefore be ignored.
Warning from spectre in `dnwpsub', during circuit read-in.
    WARNING (SFE-2296): "/root/Design6/Simulation_Efficiency/TSMC18/tsmc18rf/../models/spectre/rf018.scs" 18697: The inline subckt definition `dnwpsub' does not contain any inline components. The `inline' qualifier will therefore be ignored.
        Further occurrences of this warning will be suppressed.

Time for NDB Parsing: CPU = 337.949 ms, elapsed = 374.345 ms.
Time accumulated: CPU = 354.945 ms, elapsed = 374.35 ms.
Peak resident memory used = 52.4 Mbytes.

Reading link:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/discipline.h
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/disciplines.vams
Reading link:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/constants.h
Reading file:  /usr/cadence/MMSIM131/tools.lnx86/spectre/etc/ahdl/constants.vams
Time for Elaboration: CPU = 23.996 ms, elapsed = 23.814 ms.
Time accumulated: CPU = 378.941 ms, elapsed = 398.339 ms.
Peak resident memory used = 58.2 Mbytes.

Time for EDB Visiting: CPU = 1 ms, elapsed = 469.923 us.
Time accumulated: CPU = 379.941 ms, elapsed = 398.973 ms.
Peak resident memory used = 58.6 Mbytes.


Global user options:
             reltol = 0.001
            vabstol = 1e-06
            iabstol = 1e-12
               temp = 27
               tnom = 27
             scalem = 1
              scale = 1
               gmin = 1e-12
             rforce = 1
           maxnotes = 5
           maxwarns = 5
             digits = 5
               cols = 80
             pivrel = 0.001
           sensfile = ../psf/sens.output
     checklimitdest = psf
               save = allpub

Circuit inventory:
              nodes 3
            bsim3v3 1     
            fourier 1     
           resistor 1     
            vsource 2     

Analysis and control statement inventory:
               info 7     
               tran 1     

Output statements:
             .probe 0     
           .measure 0     
               save 0     


Notice from spectre.
    4 warnings suppressed.

Time for parsing: CPU = 1.999 ms, elapsed = 192.691 ms.
Time accumulated: CPU = 381.94 ms, elapsed = 591.798 ms.
Peak resident memory used = 59.5 Mbytes.

~~~~~~~~~~~~~~~~~~~~~~
Pre-Simulation Summary
~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~
Entering remote command mode using MPSC service (spectre, ipi, v0.0, spectre26_3883_141, ).

Warning from spectre.
    WARNING (SPECTRE-16707): Only tran supports psfxl format, result of other analyses will be in psfbin format.


***********************************************
Transient Analysis `tran': time = (0 s -> 1 ms)
***********************************************
DC simulation time: CPU = 0 s, elapsed = 447.035 us.
Important parameter values:
    start = 0 s
    outputstart = 0 s
    stop = 1 ms
    step = 1 us
    maxstep = 20 us
    ic = all
    useprevic = no
    skipdc = no
    reltol = 1e-03
    abstol(V) = 1 uV
    abstol(I) = 1 pA
    temp = 27 C
    tnom = 27 C
    tempeffects = all
    errpreset = moderate
    method = traponly
    lteratio = 3.5
    relref = sigglobal
    cmin = 0 F
    gmin = 1 pS


Output and IC/nodeset summary:
                 save   2       (current)
                 save   3       (voltage)

    tran: time = 25.08 us    (2.51 %), step = 83.33 ns    (8.33 m%)
    tran: time = 75 us        (7.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 125 us      (12.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 175 us      (17.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 225.1 us    (22.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 275.1 us    (27.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 325.1 us    (32.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 375.1 us    (37.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 425.1 us    (42.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 475.1 us    (47.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 525.1 us    (52.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 575 us      (57.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 625 us      (62.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 675 us      (67.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 725 us      (72.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 775 us      (77.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 825 us      (82.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 875 us      (87.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 925 us      (92.5 %), step = 83.33 ns    (8.33 m%)
    tran: time = 975 us      (97.5 %), step = 83.33 ns    (8.33 m%)
Number of accepted tran steps =             12180

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Post-Transient Simulation Summary
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   -   To further speed up simulation, consider
          add ++aps on command line
          add +cktpreset=sampled on command line for ADC/DAC simulation
          add +cktpreset=pll on command line for PLL simulation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Initial condition solution time: CPU = 0 s, elapsed = 522.852 us.
Intrinsic tran analysis time:    CPU = 338.949 ms, elapsed = 389.999 ms.


========================
Fourier Analysis `FOUR0'
========================

Fundamental frequency = 10 MHz.
Fundamental period = 100 ns.

Fourier components of V(net7) for the interval from 999.9 us to 1 ms:
DC = 1.36938 V.

Harm:  Absolute        Absolute        Relative        Relative
       Magnitude       Phase           Magnitude       Phase
   1:  857.287 uV     -92.8791 Deg     0.000 dB        0 Deg <- normalizer
   2:  425.329 uV     -92.9399 Deg    -6.088 dB       -60.8688 mDeg
   3:  283.211 uV     -93.6285 Deg    -9.620 dB       -749.429 mDeg
   4:  212.374 uV     -94.4755 Deg    -12.120 dB      -1.5964 Deg
   5:  169.935 uV     -95.3875 Deg    -14.057 dB      -2.50841 Deg
Total harmonic distortion = 67.5238 % (-3.41086 dB).
RMS value of computed spectrum (excluding DC) = 1.03443 mV.
RMS value of computed spectrum (including DC) = 1.36938 V.
Nonperiodicity (first/last point mismatch) = 2.66335 mV (310.671 %).


Total time required for tran analysis `tran': CPU = 341.949 ms, elapsed = 393.964 ms.
Time accumulated: CPU = 731.888 ms, elapsed = 1.18654 s.
Peak resident memory used = 62.4 Mbytes.

finalTimeOP: writing operating point information to rawfile.
modelParameter: writing model parameter values to rawfile.
element: writing instance parameter values to rawfile.
outputParameter: writing output parameter values to rawfile.
designParamVals: writing netlist parameters to rawfile.
primitives: writing primitives to rawfile.
subckts: writing subcircuits to rawfile.

I used exactly the same MMSIM version as you (just in case) and got fourier results in the log file that matched yours (I found the same models). I then plotted the result in ViVA (both directly and then changing the plot style to spectral) and as you can see, the results are matching the log file:

Which IC subversion are you using (Help->About in the CIW will tell you)?

Regards,

Andrew.

Thank you.

The IC subversion: IC6.6-64b.500.9.

"I then plotted the result in ViVA (both directly and then changing the plot style to spectral) and as you can see, the results are matching the log file."

What do you mean by the results match the log file here?

Also from my spectre.out:

Fourier components of V(net7) for the interval from 999.9 us to 1 ms:
DC = 1.36938 V.

I am wondering why the interval is so short.

I attached the picture below with about the result but net7 contains no data. The waveform shown is from transient analysis not fourier.

I tried that version, and it works fine for me. How are you trying to plot the signal? If you plot the transient signal first, and then try to plot the fourier signal by dragging net7 from the fourier results onto the graph, that won't work because the axes are incompatible. 

If instead you double click on the net7 in the results browser, or select it and hit the plot icon, or select it and do Right Mouse->Plot Signal, then it should plot OK in a separate sub-window.

I said it matches because the markers I added match these values (this is from my log file, but they match yours). I've marked in red the outputs I added markers for:

========================
Fourier Analysis `FOUR0'
========================

Fundamental frequency = 10 MHz.
Fundamental period = 100 ns.

Fourier components of V(net7) for the interval from 999.9 us to 1 ms:
DC = 1.36938 V.

Harm: Absolute Absolute Relative Relative
Magnitude Phase Magnitude Phase
1: 857.287 uV -92.8791 Deg -0.000 dB 0 Deg <- normalizer
2: 425.329 uV -92.9399 Deg -6.088 dB -60.8688 mDeg
3: 283.211 uV -93.6285 Deg -9.620 dB -749.429 mDeg
4: 212.374 uV -94.4755 Deg -12.120 dB -1.5964 Deg
5: 169.935 uV -95.3875 Deg -14.057 dB -2.50841 Deg
Total harmonic distortion = 67.5238 % (-3.41086 dB).
RMS value of computed spectrum (excluding DC) = 1.03443 mV.
RMS value of computed spectrum (including DC) = 1.36938 V.
Nonperiodicity (first/last point mismatch) = 2.66335 mV (310.671 %).

The reason why it is such a short interval is that you have a fundamental in the fourier analyser of 10MHz, which corresponds to 0.1us - and it analyses the last period during the transient, which is exactly what you're seeing. It would make no sense to have a longer interval unless the fundamental was a lower frequency.

Regards,

Andrew.

Thanks for the detailed answer.

If instead you double click on the net7 in the results browser, or select it and hit the plot icon, or select it and do Right Mouse->Plot Signal, then it should plot OK in a separate sub-window.

I already tried that but it doesn't work.

By the way, I also sent the signal to calculator and then plotted it but calculator said the expression is nil. So I think there is something wrong with the signal here. It doesn't have any data. 

Is there a way to plot the signal in fourier with the data given in log file?

I have no idea why this doesn't work for you, when it works absolutely fine for me with the same netlist, same simulator and Virtuoso versions.

Can you (in UNIX) go into the psf directory and type:

psf FOUR0.tran.test_fourier

and post the output here.

No, you can't plot the log file (that's pretty obvious, I would have thought). You could put the numbers in a file and use the getAsciiWave function in the calculator to read it (it would have to be a set of x,y pairs in the file you're reading) but that's pretty clunky.

Regards,

Andrew.

Thanks for the patience!

Here is what I got after executing the command:

HEADER
"PSFversion" "1.00"
"BINPSF creation time" "1458704652"
"simulator" "spectre"
"version" "13.1.1.049"
"date" "10:44:11 AM, Wed Mar 23, 2016"
"design" "// Generated for: spectre"
"analysis type" "tran.test_fourier"
"analysis name" "FOUR0"
"analysis description" "Fourier Analysis `FOUR0'"
"xVecSorted" "unknown"
"tolerance.relative" 0.00100000
TYPE
"sweep" FLOAT DOUBLE PROP(
"key" "sweep"
)
"V" COMPLEX DOUBLE PROP(
"units" "V"
"key" "node"
"tolerance" 1.00000e-06
)
"I" COMPLEX DOUBLE PROP(
"units" "A"
"key" "branch"
"tolerance" 1.00000e-12
)
"MMF" COMPLEX DOUBLE PROP(
"units" "A*turn"
"key" "node"
"tolerance" 1.00000e-12
)
"Wb" COMPLEX DOUBLE PROP(
"units" "Wb"
"key" "node"
"tolerance" 1.00000e-09
)
"Temp" COMPLEX DOUBLE PROP(
"units" "C"
"key" "node"
"tolerance" 0.000100000
)
"Pwr" COMPLEX DOUBLE PROP(
"units" "W"
"key" "node"
"tolerance" 1.00000e-09
)
"U" COMPLEX DOUBLE PROP(
"units" ""
"key" "node"
"tolerance" 1.00000e-06
)
"V/Sec" COMPLEX DOUBLE PROP(
"units" "V/s"
"key" "node"
"tolerance" 0.000100000
)
"I/Sec" COMPLEX DOUBLE PROP(
"units" "A/s"
"key" "node"
"tolerance" 1.00000e-06
)
"1/Sec" COMPLEX DOUBLE PROP(
"units" "1/s"
"key" "node"
"tolerance" 0.000100000
)
"HOD" COMPLEX DOUBLE PROP(
"units" ""
"key" "node"
"tolerance" 0.0100000
)
"Q" COMPLEX DOUBLE PROP(
"units" "Coul"
"key" "node"
"tolerance" 1.00000e-15
)
SWEEP
"tran.test_fourier" "sweep" PROP(
"sweep_direction" 0
"units" "Hz"
"plot" 0
"grid" 4
)
TRACE
"net7" "V" PROP(
"Fund" 1.00000e+07
)
VALUE
END