Show us your situations in detail.
Wrong.In HB simulation in ADS, I set fundamental frequency to 30 GHz
Wrong.and enable oscillator analysis
Show me ADS netlist.How should I configure HB simulation?
You have to set enough large Max Order such as 10*(30G/1.875G)=160.Just setting fundamental frequency to 1.875 GHz?
Is that enough?
Still you can not understand HB analysis at all.How should I specify oscillators node?
Noisecon:NC6 InputFreq=noisefreq NoiseFreqPlan="NC6_nl_stim" CarrierIndex[1]=16 \
PhaseNoise=1 NoiseNode[1]="Vop2 Von2" SortNoise=1 \
NoiseThresh=30 IncludePortNoise=yes \
BandwidthForNoise=1.0 Hz
SweepPlan: NC6_nl_stim Start=10 Hz Stop=100 MHz Dec=20
Fosc=29.771651 GHz
Finj=Fosc/16
Noisecon:NC5 NoiseFreqPlan="NC5_nl_stim" CarrierFreq=Finj \
PhaseNoise=1 NoiseNode[1]="Vop Von" SortNoise=0 \
IncludePortNoise=yes \
BandwidthForNoise=1.0 Hz
SweepPlan: NC5_nl_stim Start=10 Hz Stop=100 MHz Dec=20
HB:HB6 MaxOrder=4 Freq[1]=Finj Order[1]=200 StatusLevel=2 Restart=no OutputBudgetIV=no OutputPlan="HB6_Output" Noisecon[1]="NC6" Noisecon[2]="NC5"
OutputPlan:HB6_Output \
Type="Output" \
UseNodeNestLevel=yes \
NodeNestLevel=2 \
UseEquationNestLevel=yes \
EquationNestLevel=2 \
UseSavedEquationNestLevel=yes \
SavedEquationNestLevel=2 \
UseDeviceCurrentNestLevel=no \
DeviceCurrentNestLevel=0 \
DeviceCurrentDeviceType="All" \
DeviceCurrentSymSyntax=yes \
UseCurrentNestLevel=yes \
CurrentNestLevel=999 \
UseDeviceVoltageNestLevel=no \
DeviceVoltageNestLevel=0 \
DeviceVoltageDeviceType="All"
Tran:HB6_tran HB_Sol=1 SteadyState=1 StatusLevel=3 \
Freq[1]=Finj Order[1]=200
Component:tahb_HB6 Module="ATAHB" Type="ModelExtractor" \
Tran_Analysis="HB6_tran" HB_Analysis="HB6"
Show me time waveforms and Spectrum for output nodes of 1.875GHz and 30GHz.It is an autonomous circuit.
I disabled oscillator analysis in HB simulation
and set its order to 200,
but my problem still exists.
Time domain waveforms:Show me time waveforms and Spectrum for output nodes of 1.875GHz and 30GHz.
I confirmed your 1.875GHz block is an autonomous circuit.Next time I enabled oscillator analysis
and chose 1.875GHz oscillator nodes for this purpose.
You plot HB.Vop2-HB.Von2.The amplitude for the 1.875GHz oscillator is almost correct but for 30GHz one is wrong.
I think it is correct.However, I can't trust this result
because oscillation amplitude shown in last HB simulation is wrong.
What do you think?
Is the phase noise result correct?
Choose 30GHz nodes as oscillation nodes.Next time I enabled oscillator analysis
and chose 1.875GHz oscillator nodes for this purpose.
Choose 30GHz nodes as oscillation nodes.
Show me plot of ts(HB.Vop2), ts(HB.Von2) and ts(HB.Vop2-HB.Von2).
Warning detected by hpeesofsim in frequency search during HB analysis `HB1'.
Circuit is stable. No zero phase crossings of the injected current were
found. For oscillation, a negative going zero phase crossing should exist.
Will try fixed frequency amplitude search.
Error detected by hpeesofsim in arc-length continuation during HB analysis `HB1'.
Value of `HB1_OP.V' went out of range during arc-length continuation.
The range is -999.998 V to 2 kV.
Convergence hints:
o Expand the range with ArcMinValue and ArcMaxValue and re-simulate.
Warning detected by hpeesofsim during HB analysis `HB1'.
Oscillator analysis did not converge. Setting solution to zero.
Warning detected by hpeesofsim during HB analysis `HB1'.
More than one mixing term has landed on frequency 0 Hz.
Set "Harm=16".In this case, the oscillator analysis does not converge.
OscProbe:HB1_OP Node[1]="Vop2" Node[2]="Von2" FundIndex=1 Harm=16 NumOctaves=8 Steps=100
Which algorithm does he use as PSS, Shooting-Newton or HB ?Besides, when I asked one of the authers of a paper with the same topic,
he told me the same approach.
(However in Cadence and with PSS and PNOISE simulation)
Set "Harm=16".
Which algorithm does he use as PSS, Shooting-Newton or HB ?
It seems convolutions are required for your circuits.Still not convergence:
It is relatively important, since you use reshaping circuits.He did not mention the details.
Is it important?
Do you use as S-Parameter or frequecy dependent description for Component `L1.Z1' and `L2.Z1' ?
It is relatively important, since you use reshaping circuits.
Do you have any other simulator ?
e.g. Synopsys HSPICE, Cadence Spectre, Mentor Eldo, Ansys Nexim, Silvaco SmartSpice.
OK.However I prefer ADS.
If it is necessary, I can use them.
"INDQ" has sqrt(freq) characteristics.These components are INDQ inductors.
(Inductors with specific quality factor).
Why is the time domain waveform of 30GHz oscillator not a sinusoidal?
Still not convergence:
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?