Clik here to view.
Doing an AC analysis in a time-varying circuit.
Hi every one :-)I wanted to do a simulation on an oscillator but I couldn't find any tools in cadence for that. Basically what I want to do is :Considering an oscillator which is oscillating. During...
View ArticleClik here to view.
Load pull (incorrect results) vs load sweep (correct results)
HelloUsing ADEL, I am trying to find the optimum load impedance for a power amplifier with HB and a port adapter. I use two methods:1. Loadpull simulation:I select a Loadpull simulation option in HB,...
View ArticleClik here to view.
VGA design from 0-5GHz bandwidth
I'm designing a project with 0-5GHz VGA. With 1dB gain steps from 12dB to 20dB. Power less than 1W. 50 Ohm input/output impedance.My architecture is using resistive CS amplifiers (2 stage cascaded),...
View ArticleClik here to view.
Difference between Shooting and HB ENV results
Hi All,I will try to phrase my problem here but please do refer to the enclosed 4 slides: they contain snapshots of the circuit and setup concerning this question.I need to get a good grasp on how the...
View ArticleClik here to view.
Could the ideal delay cell of analogLib be used in PSS simulation?
I used the ideal delay cell of analogLib to generate 256 delayed signals as the inputs of the circuit. Now I got convergence problem. It could be caused by other issues. But is the ideal delay cell OK...
View ArticleClik here to view.
Hidden state problem / HB analysis
Hello everyone,I am new to VerilogA and have a little problem figuring out what's wrong with my module. The error message says that my module is not supported in PSS analysis because it is a behavior...
View ArticleClik here to view.
PSS and PXF analysis of Boost converter operating in Pulse Frequency Modulation
Hi,In the circuit below, the VerilogA Comparator block (no hidden states) along with the RS Flip Flop is generating the switching frequency required for the ideal switch and keeps the boost converter...
View ArticleClik here to view.
Instance exclusion for noise / pnoise analysis.
I am doing an HB / PNoise simulation and I would like to exclude the noise contribution of an entire block (instance) out of several blocks. Is this possible with a special property on that particular...
View ArticleClik here to view.
High Q XOSC - PSS shooting engine: erroneous results
Hi,I am designing a simple high Q 16M XTAL + INV oscillator in MMSIM 14.10.576 (I think this is the latest version?) using PSS with the shooting engine. The reason I went for the shooting engine rather...
View ArticleClik here to view.
PAC analysis not working for Boost Converter operating as autonomous circuit
Hi,Below figure gives the circuit of boost converter operating as autonomous circuit (does not have an explicit clock). The set signal `s` becomes high when the inductor current goes below some...
View ArticleClik here to view.
Contents of hbnoise_xf results directory
Hi, from within Virtuoso 6.1.6 , MMSIM 13.1 ISR10I am performing an hbnoise analysis on top of a {single|double}tone HB.The simulation creates a series of directories under the psf...
View ArticleClik here to view.
NF simulation using EM-extracted S-parameter touchstone
Hello Support team,case study:1.S-parameter ( S17P, touchstone, 17 ports) for a passive package is extracted using EM simulation ( EMPro)2.testbench is made In ADS and performed s-parameter simulation...
View ArticleClik here to view.
PSS & PAC simulation running very slowly when running through OCEAN script in...
Dear All,Pss & PAC simulation running very slowly when running through OCEAN script. But if I run in ADE it runs much faster.I have filed a service request since almost 2 month.But they say that...
View ArticleClik here to view.
Documents for Ring Oscillator , Injection-locked Ring Oscillator Jitter...
Dear All,Can anybody please tell , whether cadence (MMSIM14) has any application Notes that explains how to measure jitter of Ring Oscillator , Injection-locked Ring Oscillator. ( As HB analysis is...
View ArticleClik here to view.
PSS convergence issue
I'm having difficulties in achieving convergence in PSS simulation (corner dependent). This appears to be happening due to a few high impedance/tri-state nodes in the design getting capacitively...
View ArticleClik here to view.
How add a specific phase noise shape to a LO input waveform
Dear All,I want to add a specific phasenoise shape to my LO input waveform ( which will drive my designed circuit ).Could anybody please tell how that can be done ?Kind Regards,
View ArticleClik here to view.
EVM measurement for an up-converting mixer using the Wireless analysis
Dear all, I want to measure the EVM for the up-converting mixer using the Wireless analysis. I invoked a wireless source (wlan11n) from the rfLib and set it to baseband and used it as an...
View ArticleClik here to view.
ENVELOPE: Fast mode Level1 engine not recognizing bus notation
Hi,I am using Virtuoso 6.1.6-64b.500.10 and MMSIM131_ISR10I select the Classic (not Wireless) ENV simulation, Harmonic Balance Engine - fast Level 1, baseband method.I have had some experience with...
View ArticleClik here to view.
unable to see spiceIn generated cell in library manager
Dear All ,I am not sure this is the correct forum but if it is wrong please point me to the correct forum.I am trying to convert a spice netlist to a schematic view. IC616 has virtuoso@ spice In...
View ArticleClik here to view.
difference between hb_mt_fd and hb_mt_fi
Hiin the results of harmonic balance simulations, i see two folders hb_mt_fd and hb_mt_fi. Can anyone tell me what is the difference between these two? BRalok
View Article