Clik here to view.
tstab method in hb with mmsim12
Hello,In the old versions of mmsim (now I'm using the v12) it was possible to set the method used by the initial transient (tstab). How can I set it in mmsim12?In my simulations transient gives a...
View ArticleClik here to view.
What is the use of No of harmonics option in PSS form
Hi,In PSS form, there is one option called Number of harmonics. I am NOT able to understand what is its use as PSS is any way a Steady state DC operating point analysis ?Of course, No of harmonics...
View ArticleClik here to view.
Issue with Flicker phase noise simulaiton with PSS+Pnoise in cadence
I have a problem with Flicker phase noise of a quartz crystal oscillator (RLC equivalent cirucit + opamp current amplifier + opamp inverter) simulated with PSS + Pnoise of CADENCE:Indeed I simulate the...
View ArticleClik here to view.
Link for "Virtuoso Spectre Circuit Simulator User Guide"
Dear All,I am looking for the latest "Virtuoso Spectre Circuit Simulator User Guide".While searching in cadence online support it gives me many links with "Virtuoso Spectre Circuit Simulator User...
View ArticleClik here to view.
Simulating Quadrature Injection locked multiplier (tripler) in Cadence
HelloInitial information - Using Cadence virtusoso 6.1.5-64b & spectre simulator for designing the followingquadrature injection locked frequency tripler. circuit Diagram - The first input I gave...
View ArticleClik here to view.
Does AMS envlp analysis ignore (* ignore_hidden_state *), etc... attributes?
Dear all,An error occurs regarding hidden states when running an AMS envlp simulation:"ERROR (SPCRTRF-15177): ENVLP analysis doesn't support behavioral module components with hidden states found...
View ArticleClik here to view.
What is Strobed Periodic Noise simulation in SpectreRF
Dear All, In SpectreRF documents I have come across "Strobed Periodic Noise simulation in SpectreRF" for Synchronous Jitter measurement.But in Pnoise analysis I have not seen Strobed option.So what is...
View ArticleClik here to view.
spectre mtline connection problem
When using mtline model in cadence spectre schematic simulation, why I can not connect output of one mtline to output of another mtline? (warnings show there will be short circuit and floating nodes)
View ArticleClik here to view.
pnoise simulation of DLL
Hi,I am now working on the delay locked loop simulation. I use a circuit level design for the voltage-controlled delay line, and verilog-a model for the phase detector and charge pump. My target is to...
View ArticleClik here to view.
phase noise of divider
I need to simulate the phase noise of a divider (or, more generally, simulate the phase noise on a non-sinusoidal signal). Most straightforward way is SpectreRF -> pss -> pnoise. There used to...
View ArticleClik here to view.
HPA Design
Hi cadence community,In designing a power amplifier, what is the purpose of s-parameters of transistor? Incase the manufacturer does not give the s-parameters, how to start designing a power amplifier?
View ArticleClik here to view.
HPA design
Hi cadence community,I have to design amplifier with following specs:Input power = 2.5 WOutput power= 676 WGain= 24.33 dB Frequency = 1030 MHzI have searched a lot to find transistors for the above...
View ArticleClik here to view.
Noise Figure of an upconverting mixer under input IF signal
I'm trying to simulate the noise figure of a transmit mixer as a function of input IF power. From the cadence tutorials it seems as if the HBnoise sim is performed under small signal conditions where...
View ArticleClik here to view.
spectreRF pss analysis : formula for PAE
Hi,When using the direct plot option to trace out the PAE (= Pout - Pin / Pdc) after a pss analysis, if the PAE is added to the outputs the formula which gets added to Output window reads as follows :...
View ArticleClik here to view.
Plotting gm Vs. time from PSS simulation (6.1.5-64b.500.11)
Hi all,yes...there is this support answer #11003524 which should address the topic.I also learnt from Andrew some time ago about saving oppoints and/or specific info through a file and attaching it to...
View ArticleClik here to view.
cadence problem : IP3 and IM3 with PWL
Hello All/Cadence Support, I am having the problem figuring out how to run IM3 and IP3 simulation if the input file is a pwl file. I am easily able to run all other analysis of PSS except...
View ArticleClik here to view.
Phase noise of frequency multiplier
Hi!I am trying to simulate a frequency multiplier. The oscillators are simple ring oscillators oscillating at 2GHz made form inverters.What the multiplier circuit is that it cancels the fundamental...
View ArticleClik here to view.
Threshold voltage calculation
Sir, can you specify the steps required for calculating the exact threshold voltage of an NMOS device?
View ArticleClik here to view.
Help for pnoise simulation in cadencespectre for VCO simulation
Hi, When I am doing pnosie analysis in cadence spectre (IC 416) , the simulation prematuarly teminated & error flushing like belowProvided I have fixed tstb =200ns for beat frequency =...
View ArticleClik here to view.
harmonic balance oscillator
I'm trying to simulate a simple passive LRC resonator circuit (https://www.dropbox.com/s/nlzpv9b9gvtceca/Untitled.png), i get results as expected from AC and transient sim (resonance at 10 MHz) but...
View Article