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RF high frequency transient/harmonic simulation
I am trying to run a large signal simulation of an RF Switch after running an initial transient as the internal voltages need to be set and attain steady state before I run power through the circuit.I...
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Spectre Parametric sweep analysis followed by ocean based processing
Hi All, I am trying to mix spectre simulation with ocean simulation. I am doing parametric sweep (say transient) using spectre netlist simulation whcih generates multiple (tran.tran) output files for...
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Regarding SP simulation for phase shifter (phase interpolator)
Dear all, I would like to ask a question about S-Parameter (SP) simulation for phase shifter (phase interpolator) design. I am designing a 10GHz phase shifter using I/Q interpolation (so called,...
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APS is being deisabled for PSS shooting analysis
Dear All,When I am using APS for PSS (shooting Method) using swap file, APS is being disbled.How can prevent APS being disabled.Kind Regards,
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Different op amp gains using different spectre analysis
Hi all,I am new to analog design. I have created an op-amp schematic and tried to get open loop gain by 2 ways:(Simulation uses cadence virtuoso)1) Transient analysis: applied a ramp pulse of 0->VDD...
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Finding DC operating points at certain timepoints during TRANSIENT analysis
Dear All,I need to run transient analysis of a circuit.However, I also want to find the dc operating points of some components at certain instants ( time points) during the transient analysis on the...
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Data update issue using SpectreRF MATLAB toolbox
Hi, I am trying to do post-processing on my output signals in MATLAB using the SpectreRF toolbox. I use the cds_srr() command in MATLAB to import the signal data into MATLAB and take it from there....
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spectre 32 bit or 64 bit?
Hi,Ok, I am just an administrator. One of my users is adking me, why spectre gets invoked from 32bit directory instead of 64bit. Here is the log snippet, Memory available: 187.1503 MB physical:...
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S parameter
Hi, when doing s parameter analysis in cadence simulation, S11 generated during simulation is w.r.to voltage or w.r.to Power? Regards,Praveen450
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Defining Noise in VDC by using noise/freq pairs
Hi All,if I set:number of noise/freq pairs : 3Freq1 : 1kNoise1 : 1e-12Freq2 : 100kNoise2 : 1e-18Freq3 : 1MNoise3 : 1e-24I would expect, similarly to what happens with pwl sources in time domain, to get...
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ADEXL and Montecarlo : 'global' PSF file creation
Hi all,I have a *very long* MC run which is taking far more than expected. It simulated some 1000 points already and I would like to examine the results. Unfortunately (for a reason that escapes me)...
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Corner and varible sweep simulation in spectre
Hi ,I am trying to do a multivariable sweep and corner simulation in spectre . In ocean , it is easy , I can do following b0_list = list(0.0 1.2)b1_list = list(0.0 1.2)b2_list = list(0.0...
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ERROR (SPECTRE-7031): SST2 Error: No space left on device
Dear All,I was running a simulation of a PEXed circuit block.The size of psf folder was exceeding 297GB !! Why So large size ?The PSS really took almost 2 days with APS enabled and at 39%, it gave...
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Export results of Monte Carlo simulation using cds_srr
Hi, I simulate a VCO in my design and export results to MATLAB using the cds_srr() function. Now, to account for mismatches, I want to run a Monte Carlo simulation (only 1 run). 1) Is there any change...
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Does capacitor in analoglib have some leak current?
Hi everyone,I've simulated a very simple circuit, as follows.It has a step-up signal as input. And signal "n2" is interesting.
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pnoise simulation setup questions (again?)
Hello, thereI'm simulating the jitter performance of a driven ckt (inverter chain like, e.g.). I'm confused by the simulation setup and like to ask a couple of questions regarding the setup parameters....
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How to change .tran options in Virtuoso
Hi everybodyVirtuoso cannot find a DC solution for my extracted (Calibre) circuit. The message says that I46_node0, where I46 refers to my main circuit symbol in the testbench circuit, has no path to...
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Run into problem with calculator plotting
Hi, I'm from university of southern california. I'm using cadence on school's server. However, whenever I try to use calculator to take derivertive or FFT of certain signal, it shows nilERROR...
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PSS-PSP simulation running into a hang mode.
Dear All,I am running a PExed circuit for PSS-PSP simulation with APS enabled. CDS.log shows that it hangs at " Conv norm = 28.7, max dI(V10:p) = 7.1098 uA, took 632.41 s. " The machine also becomes...
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Reading parmetric sweep data through ocean
Hi All,I have a set of parmetric sweep results generated through spectre simulation . These file names are of the format "sweep_variablename_-<iteration...
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