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https://designers-guide.org/forum/YaBB.pl Simulators >> RF Simulators >> pss does not converge https://designers-guide.org/forum/YaBB.pl?num=1477843044 Message started by sanazadib on Oct 30th, 2016, 8:57am |
Title: pss does not converge Post by sanazadib on Oct 30th, 2016, 8:57am Hi everyone I design clock generator that create four non overlap clock at 1 GHZ,in fact I have four non overlap clock which each one has frequency of 1Ghz I can do transient analysis and it gives me four non overlap clock at 1Ghz,however when I do PSS analysis I got converge problem,it said it does not converge . I change tstab and some parameter but still give me this error anybody have any idea? Thanks in advance |
Title: Re: pss does not converge Post by Geoffrey_Coram on Nov 1st, 2016, 8:09am I think I remember reading that PSS can have convergence difficulties if any of the clocks is transitioning at the end of the period. |
Title: Re: pss does not converge Post by sanazadib on Nov 1st, 2016, 12:32pm Actually I did transient analysis and I create layout for my clock generator ,and this is my RLC extraction from clock generator |
Title: Re: pss does not converge Post by Ken Kundert on Nov 1st, 2016, 4:32pm Autonomous or driven? |
Title: Re: pss does not converge Post by sanazadib on Nov 2nd, 2016, 7:23am Actually I inject 4GhZ Clock generator and it gives me four non overlap clock at 1Ghz,structure of clock is consist of flipflop(transmission gate and inverter) ,inverter .nor gate and so on I try different tstab,different tolerance option ,still did no work result that I show above is transient result where I did RLC extraction |
Title: Re: pss does not converge Post by sanazadib on Nov 2nd, 2016, 3:22pm ************************************************* Periodic Steady-State Analysis `pss': fund = 4 GHz ************************************************** Trying `homotopy = gmin' for initial conditions. Notice from spectre during IC analysis, during periodic steady state analysis `pss'. GminDC = 1 pS is large enough to noticeably affect the DC solution. dV(I0.I171|I1|T3:int_d) = -93.7384 mV Use the `gmin_check' option to eliminate or expand this report. Bad pivoting is found during DC analysis. Option dc_pivot_check=yes is recommended for possible improvement of convergence. DC simulation time: CPU = 899.863 ms, elapsed = 900.905 ms. =============================== `pss': time = (0 s -> 20.25 ns) =============================== Output and IC/nodeset summary: save 1357 (current) save 4238 (voltage) Important parameter values in tstab integration: start = 0 s outputstart = 0 s stop = 20.25 ns period = 250 ps maxperiods = 20 step = 20.25 ps maxstep = 10 ps 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 method = gear2 lteratio = 3.5 relref = sigglobal cmin = 0 F gmin = 1 pS pss: time = 486.4 ps (2.4 %), step = 3.854 ps (19 m%) pss: time = 506.7 ps (2.5 %), step = 488.8 fs (2.41 m%) pss: time = 907.1 ps (4.48 %), step = 564.8 fs (2.79 m%) pss: time = 1.373 ns (6.78 %), step = 2.734 ps (13.5 m%) pss: time = 1.519 ns (7.5 %), step = 1.12 ps (5.53 m%) pss: time = 2 ns (9.88 %), step = 1.692 ps (8.36 m%) pss: time = 2.463 ns (12.2 %), step = 2.118 ps (10.5 m%) pss: time = 2.531 ns (12.5 %), step = 675.8 fs (3.34 m%) pss: time = 3.076 ns (15.2 %), step = 2.231 ps (11 m%) pss: time = 3.545 ns (17.5 %), step = 1.011 ps (4.99 m%) pss: time = 4.137 ns (20.4 %), step = 779.8 fs (3.85 m%) pss: time = 4.557 ns (22.5 %), step = 1.441 ps (7.12 m%) pss: time = 5.016 ns (24.8 %), step = 946.5 fs (4.67 m%) pss: time = 5.411 ns (26.7 %), step = 563.4 fs (2.78 m%) pss: time = 5.569 ns (27.5 %), step = 2.164 ps (10.7 m%) pss: time = 6.006 ns (29.7 %), step = 733.7 fs (3.62 m%) pss: time = 6.427 ns (31.7 %), step = 1.409 ps (6.96 m%) pss: time = 6.581 ns (32.5 %), step = 2.338 ps (11.5 m%) pss: time = 7.018 ns (34.7 %), step = 684.8 fs (3.38 m%) pss: time = 7.414 ns (36.6 %), step = 1.088 ps (5.37 m%) pss: time = 7.595 ns (37.5 %), step = 2.591 ps (12.8 m%) pss: time = 8.021 ns (39.6 %), step = 1.541 ps (7.61 m%) pss: time = 8.499 ns (42 %), step = 1.46 ps (7.21 m%) pss: time = 8.606 ns (42.5 %), step = 1.191 ps (5.88 m%) pss: time = 9.085 ns (44.9 %), step = 1.316 ps (6.5 m%) pss: time = 9.544 ns (47.1 %), step = 1.217 ps (6.01 m%) pss: time = 9.621 ns (47.5 %), step = 2.987 ps (14.7 m%) pss: time = 10.01 ns (49.4 %), step = 722.2 fs (3.57 m%) pss: time = 10.4 ns (51.4 %), step = 432.4 fs (2.14 m%) pss: time = 10.63 ns (52.5 %), step = 628.1 fs (3.1 m%) pss: time = 11.16 ns (55.1 %), step = 601 fs (2.97 m%) pss: time = 11.64 ns (57.5 %), step = 859.6 fs (4.24 m%) pss: time = 12.22 ns (60.3 %), step = 3.403 ps (16.8 m%) pss: time = 12.66 ns (62.5 %), step = 700.7 fs (3.46 m%) pss: time = 13.18 ns (65.1 %), step = 2.268 ps (11.2 m%) pss: time = 13.67 ns (67.5 %), step = 1.191 ps (5.88 m%) pss: time = 14.18 ns (70 %), step = 1.814 ps (8.96 m%) pss: time = 14.68 ns (72.5 %), step = 2.16 ps (10.7 m%) pss: time = 15.3 ns (75.5 %), step = 418.4 fs (2.07 m%) pss: time = 15.7 ns (77.5 %), step = 3.053 ps (15.1 m%) pss: time = 16.3 ns (80.5 %), step = 865 fs (4.27 m%) pss: time = 16.71 ns (82.5 %), step = 3.65 ps (18 m%) pss: time = 17.3 ns (85.5 %), step = 974.5 fs (4.81 m%) pss: time = 17.72 ns (87.5 %), step = 1.454 ps (7.18 m%) pss: time = 18.35 ns (90.6 %), step = 897.2 fs (4.43 m%) pss: time = 18.73 ns (92.5 %), step = 3.033 ps (15 m%) pss: time = 19.35 ns (95.6 %), step = 908.3 fs (4.49 m%) pss: time = 19.74 ns (97.5 %), step = 2.216 ps (10.9 m%) Total time required for tstab analysis `pss': CPU = 394.933 s (6m 34.9s), elapsed = 399.07 s (6m 39.1s). Time accumulated: CPU = 394.934 s (6m 34.9s), elapsed = 399.07 s (6m 39.1s). Peak resident memory used = 121 Mbytes. Conv norm = 12.8e+03, max dV(I0.I222|I217|I187|T3:int_d) = 1.52032 V, took 393.25 s. Important parameter values in pss iteration: start = 20 ns outputstart = 0 s stop = 20.25 ns period = 250 ps maxperiods = 20 steadyratio = 10e-03 step = 20.25 ps maxstep = 1.25 ps ic = all useprevic = no skipdc = no reltol = 100e-06 abstol(V) = 1 uV abstol(I) = 1 pA temp = 27 C tnom = 27 C tempeffects = all errpreset = conservative method = gear2 lteratio = 10 relref = alllocal cmin = 0 F gmin = 1 pS ================================= `pss': time = (20 ns -> 20.25 ns) ================================= pss: time = 20.01 ns (2.6 %), step = 253 |
Title: Re: pss does not converge Post by sanazadib on Nov 2nd, 2016, 3:24pm ================================= `pss': time = (20 ns -> 20.25 ns) ================================= Warning from spectre at time = 20.0002 ns during periodic steady state analysis `pss'. WARNING (SPECTRE-16266): Error requirements were not satisfied because of convergence difficulties. Warning from spectre at time = 20.0002 ns during periodic steady state analysis `pss'. WARNING (SPECTRE-16266): Error requirements were not satisfied because of convergence difficulties. Warning from spectre at time = 20.0002 ns during periodic steady state analysis `pss'. WARNING (SPECTRE-16266): Error requirements were not satisfied because of convergence difficulties. pss: time = 20 ns (97.9 m%), step = 10.83 fs (4.33 m%) Warning from spectre at time = 20.0003 ns during periodic steady state analysis `pss'. WARNING (SPECTRE-16266): Error requirements were not satisfied because of convergence difficulties. Warning from spectre at time = 20.0003 ns during periodic steady state analysis `pss'. WARNING (SPECTRE-16266): Error requirements were not satisfied because of convergence difficulties. Further occurrences of this warning will be suppressed. pss: time = 20 ns (133 m%), step = 59.28 fs (23.7 m%) pss: time = 20 ns (151 m%), step = 30.14 fs (12.1 m%) pss: time = 20 ns (187 m%), step = 50.2 fs (20.1 m%) pss: time = 20 ns (227 m%), step = 51.64 fs (20.7 m%) Jacobian was reordered during integration. Don't use swap file in PSS analysis pss: time = 20 ns (256 m%), step = 10.17 fs (4.07 m%) pss: time = 20 ns (466 m%), step = 4.955 fs (1.98 m%) pss: time = 20 ns (849 m%), step = 28.64 fs (11.5 m%) pss: time = 20 ns (1.44 %), step = 49.64 fs (19.9 m%) pss: time = 20 ns (1.93 %), step = 10.16 fs (4.06 m%) pss: time = 20.01 ns (2.27 %), step = 9.225 fs (3.69 m%) pss: time = 20.01 ns (2.47 %), step = 3.324 fs (1.33 m%) pss: time = 20.01 ns (2.5 %), step = 16.59 fs (6.64 m%) pss: time = 20.01 ns (2.79 %), step = 15.14 fs (6.06 m%) pss: time = 20.01 ns (3.25 %), step = 13.1 fs (5.24 m%) pss: time = 20.01 ns (3.55 %), step = 52.38 fs (21 m%) pss: time = 20.01 ns (4.02 %), step = 49.2 fs (19.7 m%) pss: time = 20.01 ns (4.19 %), step = 2.91 fs (1.16 m%) pss: time = 20.01 ns (4.77 %), step = 43.44 fs (17.4 m%) pss: time = 20.01 ns (5.27 %), step = 21.82 fs (8.73 m%) pss: time = 20.01 ns (5.65 %), step = 31.5 fs (12.6 m%) pss: time = 20.02 ns (6.08 %), step = 33.41 fs (13.4 m%) pss: time = 20.02 ns (6.66 %), step = 6.118 fs (2.45 m%) pss: time = 20.02 ns (7.04 %), step = 12.45 fs (4.98 m%) pss: time = 20.02 ns (7.5 %), step = 40.55 fs (16.2 m%) pss: time = 20.02 ns (8.18 %), step = 21.31 fs (8.52 m%) pss: time = 20.02 ns (8.56 %), step = 7.893 fs (3.16 m%) pss: time = 20.02 ns (9.26 %), step = 25.27 fs (10.1 m%) pss: time = 20.03 ns (10.3 %), step = 28.73 fs (11.5 m%) pss: time = 20.03 ns (11 %), step = 12.16 fs (4.86 m%) pss: time = 20.03 ns (11.5 %), step = 36.91 fs (14.8 m%) pss: time = 20.03 ns (12.3 %), step = 40.89 fs (16.4 m%) pss: time = 20.03 ns (12.5 %), step = 90.72 fs (36.3 m%) pss: time = 20.03 ns (12.9 %), step = 91.41 fs (36.6 m%) pss: time = 20.03 ns (13.5 %), step = 50.25 fs (20.1 m%) pss: time = 20.03 ns (13.9 %), step = 96.42 fs (38.6 m%) pss: time = 20.04 ns (14.3 %), step = 26.18 fs (10.5 m%) pss: time = 20.04 ns (14.5 %), step = 30.52 fs (12.2 m%) pss: time = 20.04 ns (14.7 %), step = 30.52 fs (12.2 m%) pss: time = 20.04 ns (15 %), step = 32.17 fs (12.9 m%) pss: time = 20.04 ns (15.2 %), step = 34.06 fs (13.6 m%) pss: time = 20.04 ns (15.6 %), step = 35.63 fs (14.3 m%) pss: time = 20.04 ns (15.8 %), step = 35.63 fs (14.3 m%) pss: time = 20.04 ns (16 %), step = 33.69 fs (13.5 m%) pss: time = 20.04 ns (16.3 %), step = 32.39 fs (13 m%) pss: time = 20.04 ns (16.5 %), step = 32.39 fs (13 m%) pss: time = 20.04 ns (16.9 %), step = 34.03 fs (13.6 m%) pss: time = 20.04 ns (17.1 %), step = 34.45 fs (13.8 m%) pss: time = 20.04 ns (17.5 %), step = 33.13 fs (13.3 m%) pss: time = 20.04 ns (17.5 %), step = 37.25 fs (14.9 m%) pss: time = 20.04 ns (17.9 %), step = 47.08 fs (18.8 m%) pss: time = 20.05 ns (18.2 %), step = 86.16 fs (34.5 m%) pss: time = 20.05 ns (18.5 %), step = 92.15 fs (36.9 m%) pss: time = 20.05 ns (18.7 %), step = 37.03 fs (14.8 m%) pss: time = 20.05 ns (19 %), step = 24.88 fs (9.95 m%) pss: time = 20.05 ns (19.2 %), step = 30.69 fs (12.3 m%) pss: time = 20.05 ns (19.5 %), step = 61.37 fs (24.5 m%) pss: time = 20.05 ns (19.6 %), step = 29.01 fs (11.6 m%) pss: time = 20.05 ns (19.9 %), step = 30.69 fs (12.3 m%) pss: time = 20.05 ns (20.3 %), step = 42.73 fs (17.1 m%) pss: time = 20.05 ns (20.5 %), step = 35.89 fs (14.4 m%) pss: time = 20.05 ns (20.8 %), step = 22.84 fs (9.13 m%) pss: time = 20.05 ns (21.1 %), step = 35.84 fs (14.3 m%) pss: time = 20.05 ns (21.3 %), step = 71.68 fs (28.7 m%) pss: |
Title: Re: pss does not converge Post by deba on Nov 4th, 2016, 5:15pm I think the circuit which you are trying is a 25% duty cycle generator for mixers. Do you have slow settling nodes in your circuit? Like some biasing ? Is PSS not converging for schematic or extraction? |
Title: Re: pss does not converge Post by Ken Kundert on Nov 5th, 2016, 10:35pm Quote:
If the inputs are periodic in 1GHz, why are you specifying 4GHz as the fundamental frequency? -Ken |
Title: Re: pss does not converge Post by sanazadib on Nov 8th, 2016, 8:46am deba wrote on Nov 4th, 2016, 5:15pm:
Yes,duty cycle is 25%, No I do not have any biasing except vdd Pss does not converge for schematic and also extraction |
Title: Re: pss does not converge Post by sanazadib on Nov 8th, 2016, 8:50am Ken Kundert wrote on Nov 5th, 2016, 10:35pm:
If the inputs are periodic in 1GHz, why are you specifying 4GHz as the fundamental frequency? input is 4Ghz clcok and output is four nonoverlap clcok at 1Ghz I even change input frequncy to 1Ghz ,did not converge again Periodic Steady-State Analysis `pss': fund = 1 GHz ************************************************** Trying `homotopy = gmin' for initial conditions. Notice from spectre during IC analysis, during periodic steady state analysis `pss'. GminDC = 1 pS is large enough to noticeably affect the DC solution. dV(I0.I171|I1|T3:int_d) = -93.7384 mV Use the `gmin_check' option to eliminate or expand this report. Bad pivoting is found during DC analysis. Option dc_pivot_check=yes is recommended for possible improvement of convergence. DC simulation time: CPU = 834.874 ms, elapsed = 833.564 ms. ============================ `pss': time = (0 s -> 21 ns) ============================ Important parameter values in tstab integration: start = 0 s outputstart = 0 s stop = 21 ns period = 1 ns maxperiods = 20 step = 21 ps maxstep = 40 ps 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 method = gear2 lteratio = 3.5 relref = sigglobal cmin = 0 F gmin = 1 pS pss: time = 525 ps (2.5 %), step = 483.5 fs (2.3 m%) pss: time = 1.287 ns (6.13 %), step = 863.3 fs (4.11 m%) pss: time = 1.578 ns (7.51 %), step = 2.744 ps (13.1 m%) pss: time = 2.44 ns (11.6 %), step = 1.996 ps (9.5 m%) pss: time = 2.625 ns (12.5 %), step = 1.971 ps (9.39 m%) pss: time = 3.492 ns (16.6 %), step = 2.259 ps (10.8 m%) pss: time = 3.676 ns (17.5 %), step = 1.363 ps (6.49 m%) pss: time = 4.543 ns (21.6 %), step = 1.086 ps (5.17 m%) pss: time = 4.726 ns (22.5 %), step = 2.499 ps (11.9 m%) pss: time = 5.598 ns (26.7 %), step = 2.286 ps (10.9 m%) pss: time = 5.775 ns (27.5 %), step = 607.5 fs (2.89 m%) pss: time = 6.638 ns (31.6 %), step = 999.4 fs (4.76 m%) pss: time = 6.826 ns (32.5 %), step = 1.418 ps (6.75 m%) pss: time = 7.632 ns (36.3 %), step = 630.2 fs (3 m%) pss: time = 7.875 ns (37.5 %), step = 1.099 ps (5.23 m%) pss: time = 8.646 ns (41.2 %), step = 471.5 fs (2.25 m%) pss: time = 8.925 ns (42.5 %), step = 1.071 ps (5.1 m%) pss: time = 9.742 ns (46.4 %), step = 2.252 ps (10.7 m%) pss: time = 9.976 ns (47.5 %), step = 2.458 ps (11.7 m%) pss: time = 10.86 ns (51.7 %), step = 2.665 ps (12.7 m%) pss: time = 11.03 ns (52.5 %), step = 449 fs (2.14 m%) pss: time = 11.91 ns (56.7 %), step = 733.5 fs (3.49 m%) pss: time = 12.08 ns (57.5 %), step = 2.222 ps (10.6 m%) pss: time = 12.99 ns (61.8 %), step = 1.774 ps (8.45 m%) pss: time = 13.13 ns (62.5 %), step = 2.464 ps (11.7 m%) pss: time = 14.01 ns (66.7 %), step = 631.9 fs (3.01 m%) pss: time = 14.18 ns (67.5 %), step = 1.58 ps (7.53 m%) pss: time = 15.06 ns (71.7 %), step = 1.931 ps (9.19 m%) pss: time = 15.23 ns (72.5 %), step = 2.676 ps (12.7 m%) pss: time = 16.12 ns (76.8 %), step = 1.729 ps (8.23 m%) pss: time = 16.28 ns (77.5 %), step = 286.2 fs (1.36 m%) pss: time = 17.15 ns (81.7 %), step = 868.3 fs (4.13 m%) pss: time = 17.33 ns (82.5 %), step = 1.19 ps (5.67 m%) pss: time = 18.19 ns (86.6 %), step = 2.236 ps (10.6 m%) pss: time = 18.38 ns (87.5 %), step = 2.002 ps (9.53 m%) pss: time = 19.18 ns (91.3 %), step = 2.22 ps (10.6 m%) pss: time = 19.43 ns (92.5 %), step = 1.16 ps (5.53 m%) pss: time = 20.26 ns (96.5 %), step = 656.6 fs (3.13 m%) pss: time = 20.48 ns (97.5 %), step = 2.918 ps (13.9 m%) Total time required for tstab analysis `pss': CPU = 249.32 s (4m 9.3s), elapsed = 250.305 s (4m 10.3s). Time accumulated: CPU = 249.32 s (4m 9.3s), elapsed = 250.305 s (4m 10.3s). Peak resident memory used = 111 Mbytes. Conv norm = 12.8e+03, max dV(I0.I212|I0|T2_1__rcx:int_d) = 1.51496 V, took 247.78 s. Important parameter values in pss iteration: start = 20 ns outputstart = 0 s stop = 21 ns period = 1 ns maxperiods = 20 steadyratio = 10e-03 step = 21 ps maxstep = 5 ps ic = all useprevic = no skipdc = no reltol = 100e-06 abstol(V) = 1 uV abstol(I) = 1 pA temp = 27 C tnom = 27 C tempeffects = all errpreset = conservative method = gear2 lteratio = 10 relref = alllocal cmin = 0 F gmin = 1 pS ============================== `pss': time = (20 ns -> 21 ns) ============================== pss: time = 20.03 ns (2.51 %), step = 91.17 fs (9.12 m%) pss: time = 20.08 ns (7.5 %), step = 398.3 fs (39.8 m%) pss: time = 20.13 ns (12.5 %), step = 111.1 fs (11.1 m%) pss: time = 20.18 ns (17.5 %), step = 625.7 fs (62.6 m%) pss: time = 20.23 ns (22.5 %), step = 422.5 fs (42.3 m%) pss: time = 20.28 ns (27.5 %), step = 91.64 fs (9.16 m%) pss: time = 20.33 ns (32.5 %), step = 678 fs (67.8 m%) |
Title: Re: pss does not converge Post by sanazadib on Nov 8th, 2016, 8:52am `pss': time = (20 ns -> 21 ns) ============================== pss: time = 20.03 ns (2.51 %), step = 91.17 fs (9.12 m%) pss: time = 20.08 ns (7.5 %), step = 398.3 fs (39.8 m%) pss: time = 20.13 ns (12.5 %), step = 111.1 fs (11.1 m%) pss: time = 20.18 ns (17.5 %), step = 625.7 fs (62.6 m%) pss: time = 20.23 ns (22.5 %), step = 422.5 fs (42.3 m%) pss: time = 20.28 ns (27.5 %), step = 91.64 fs (9.16 m%) pss: time = 20.33 ns (32.5 %), step = 678 fs (67.8 m%) pss: time = 20.38 ns (37.5 %), step = 585.3 fs (58.5 m%) pss: time = 20.43 ns (42.5 %), step = 709.4 fs (70.9 m%) pss: time = 20.48 ns (47.5 %), step = 1.273 ps (127 m%) pss: time = 20.53 ns (52.5 %), step = 221.2 fs (22.1 m%) pss: time = 20.58 ns (57.5 %), step = 451.2 fs (45.1 m%) pss: time = 20.63 ns (62.5 %), step = 211.3 fs (21.1 m%) pss: time = 20.68 ns (67.5 %), step = 772.1 fs (77.2 m%) pss: time = 20.73 ns (72.6 %), step = 1.436 ps (144 m%) pss: time = 20.78 ns (77.5 %), step = 98.64 fs (9.86 m%) pss: time = 20.83 ns (82.5 %), step = 529 fs (52.9 m%) pss: time = 20.87 ns (87.5 %), step = 987.9 fs (98.8 m%) pss: time = 20.93 ns (92.6 %), step = 753.8 fs (75.4 m%) pss: time = 20.98 ns (97.6 %), step = 1.525 ps (152 m%) Conv norm = 2.94e+03, max dV(I0.I212|I0|T1:int_d) = -45.9961 mV, took 68.62 s. ============================== `pss': time = (20 ns -> 21 ns) ============================== pss: time = 20.03 ns (2.51 %), step = 88.82 fs (8.88 m%) pss: time = 20.08 ns (7.54 %), step = 1.08 ps (108 m%) pss: time = 20.13 ns (12.5 %), step = 126.6 fs (12.7 m%) pss: time = 20.18 ns (17.5 %), step = 629.2 fs (62.9 m%) pss: time = 20.23 ns (22.5 %), step = 818.5 fs (81.9 m%) pss: time = 20.28 ns (27.5 %), step = 74.51 fs (7.45 m%) pss: time = 20.33 ns (32.5 %), step = 392.7 fs (39.3 m%) pss: time = 20.38 ns (37.5 %), step = 937.5 fs (93.8 m%) pss: time = 20.43 ns (42.5 %), step = 774.3 fs (77.4 m%) pss: time = 20.48 ns (47.5 %), step = 1.262 ps (126 m%) pss: time = 20.53 ns (52.5 %), step = 291.3 fs (29.1 m%) pss: time = 20.58 ns (57.5 %), step = 742 fs (74.2 m%) pss: time = 20.63 ns (62.5 %), step = 187.4 fs (18.7 m%) pss: time = 20.68 ns (67.5 %), step = 758.3 fs (75.8 m%) pss: time = 20.73 ns (72.5 %), step = 1.199 ps (120 m%) pss: time = 20.78 ns (77.5 %), step = 97.55 fs (9.76 m%) pss: time = 20.83 ns (82.5 %), step = 435.3 fs (43.5 m%) pss: time = 20.87 ns (87.5 %), step = 979.8 fs (98 m%) pss: time = 20.93 ns (92.6 %), step = 758.6 fs (75.9 m%) pss: time = 20.98 ns (97.6 %), step = 949.6 fs (95 m%) Conv norm = 167, max dV(I0.I209|I184|T5:int_d) = -2.43831 mV, took 64.06 s. `pss': time = (20 ns -> 21 ns) ============================== pss: time = 20.03 ns (2.51 %), step = 90.86 fs (9.09 m%) pss: time = 20.08 ns (7.57 %), step = 842 fs (84.2 m%) pss: time = 20.13 ns (12.5 %), step = 114.1 fs (11.4 m%) pss: time = 20.18 ns (17.5 %), step = 696.7 fs (69.7 m%) pss: time = 20.23 ns (22.5 %), step = 808.4 fs (80.8 m%) pss: time = 20.28 ns (27.5 %), step = 89.89 fs (8.99 m%) pss: time = 20.33 ns (32.5 %), step = 781.5 fs (78.2 m%) pss: time = 20.38 ns (37.5 %), step = 848.3 fs (84.8 m%) pss: time = 20.43 ns (42.5 %), step = 759.5 fs (75.9 m%) pss: time = 20.48 ns (47.5 %), step = 1.328 ps (133 m%) pss: time = 20.53 ns (52.5 %), step = 282.4 fs (28.2 m%) pss: time = 20.58 ns (57.5 %), step = 462 fs (46.2 m%) pss: time = 20.63 ns (62.5 %), step = 232.5 fs (23.3 m%) pss: time = 20.68 ns (67.5 %), step = 768.7 fs (76.9 m%) pss: time = 20.73 ns (72.5 %), step = 1.384 ps (138 m%) pss: time = 20.78 ns (77.5 %), step = 90.51 fs (9.05 m%) pss: time = 20.83 ns (82.5 %), step = 583.7 fs (58.4 m%) pss: time = 20.87 ns (87.5 %), step = 716.7 fs (71.7 m%) pss: time = 20.93 ns (92.6 %), step = 759.1 fs (75.9 m%) pss: time = 20.98 ns (97.6 %), step = 1.966 ps (197 m%) Conv norm = 94.4, max dV(I0.I212|I0|T3:int_g) = -1.43786 mV, took 62.84 s. ============================== `pss': time = (20 ns -> 21 ns) ============================== pss: time = 20.03 ns (2.51 %), step = 90.86 fs (9.09 m%) pss: time = 20.08 ns (7.57 %), step = 842 fs (84.2 m%) pss: time = 20.13 ns (12.5 %), step = 120.7 fs (12.1 m%) pss: time = 20.18 ns (17.5 %), step = 442.2 fs (44.2 m%) pss: time = 20.23 ns (22.5 %), step = 820.8 fs (82.1 m%) pss: time = 20.28 ns (27.5 %), step = 79.16 fs (7.92 m%) pss: time = 20.33 ns (32.5 %), step = 691 fs (69.1 m%) pss: time = 20.38 ns (37.5 %), step = 987.3 fs (98.7 m%) pss: time = 20.43 ns (42.5 %), step = 804.3 fs (80.4 m%) pss: time = 20.48 ns (47.6 %), step = 1.368 ps (137 m%) pss: time = 20.53 ns (52.5 %), step = 207 fs (20.7 m%) pss: time = 20.58 ns (57.5 %), step = 968.1 fs (96.8 m%) pss: time = 20.63 ns (62.5 %), step = 199.8 fs (20 m%) pss: time = 20.68 ns (67.6 %), step = 775.1 fs (77.5 m%) |
Title: Re: pss does not converge Post by deba on Nov 8th, 2016, 5:50pm Your input is fin and output is at fin/4. The PSS fundamental period should be defined as fin/4. For 4 GHz, you should use 1 GHz. Similarly for 1 GHz, beat is 250 MHz. |
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