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how to get the physical model or model description of an element?
A question has bothered a lot, when I using "Vsource" which is from 'rfLib' library to run an ACPR, but I don't know how to set the element value of 'vsource', my question is how to get a help document...
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substrate layer of inductor
Hello, I have build an inductor as shown bellow, there are two layers layer 9 and layer 8 with a VIA connecting between them. There are 3 layers where a substrate could be define.under layer 9,...
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s-param ports problem in Goldengate s-param simulation
Hello, i am trying to simulate my inductor s-param with goldengate . i have built the schematics and defined the simulation as shown bellow.but it says that i havent defined sparam ports although i did...
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harmonic balance of oscilator spur injection
Hello, i have an oscilator oscilating at 10GHz, in theory if we add another VSIN source to the bias as shown bellow (18GHz) then those two spurs can bacome one spurunder certaing condtion,or at least...
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Difference in power values after performing a PSS analysis
HelloI am running a PSS analysis for my RF rectifier. I am trying to get the power plot of the input source "port" by selecting Direct plot-power. However, the plot varies if select "instance with 2...
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fundamental frequency problem in HB
Hello, i have tried to simulate a mixer with LO=303ps=3.3GHz Vpulse RF=6.6GHz VSIN as shown bellow.and i defined HB to see the combinations of these tones, but it says "The source V6 couldn't find...
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common source amplifier of RF signal problem
Hello,my input signal is 3GHz and 0.3V i need my signal to be at least 0.7,so i built a common source amplifier by the principle of the schematics bellow.as you can see,from my operating point...
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HB simulation of a mixer using two different oscilator sources
Hello , I am trying to simulate a 6.66GHz 3.3GHz mixer where oscillators act as sources.I have tested oscillator 6.66G ,oscillator 3.3G and the mixer with VSIN sources separately in a different...
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HB and TRANSIENT shows different result regarding dc block
Hello, i implemented a DC block of 100pf to remove the DC component on the LO_not net, as shown bellow.When i checked with HB then it shows that the DC component was removed( the plots of before DC...
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Constant Q Circles in Smith Chart
Dear all,I apologize in advance if this question has been asked previously (I was unable to find it), but is there a way to plot constant Q circles in Virtuoso's Smith Chart? By constant Q circles I am...
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Improve the Insertion loss of a 1st order Polyphase filter
I am designing a Polyphase filter as the main block for my Quadrature phase generator. I am using the 1st order polyphase filter to check how much insertion loss can be expected before I fix the...
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operating point data contradicts region data
Hello, i am trying to bias my mixer transistors to be in saturation (region 2)The operating point data shown bellow fits the conditions of saturation, but my transistor region status is 1(linear) as...
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transistor state in Vpulse source
Hello, i am simulation a mixer with LO vpulse and RF with sinus source,The mixer output spectrum works fine as shown bellow,but when i look and the BIAS state of LO transistor it shows me that its in...
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path error connecting mixer to amplifier
Hello , i have built a cascaded amplifier , which i turned it into a symbol and it worked fine as shown bellow.When i tried to add it to my mixer it gives me a problem shown in the end.where did i...
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VCO verilogA model not running PSS
Dear all, I have a verilogA model of a VCO implemented as such:_________________________________________________________________________________`include "disciplines.vams"`include "constants.vams"////...
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Verifying PSTB results by using PAC results.
Dear All,We have successfully verified the STB analysis results by using AC analysis results. We have injected voltage and the current sources as given in the document...
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Different simulation result from ADE L and ADE XL
Hello everyone,I am using cadence ICADV 12.3 and ADE XL for my simulations. For some reason, I am having a differences in the result I get from ADE-L and ADE-XL simulations despite that everything is...
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amplifier Assura LVS check problem
Hello , i have built an aplifier in schematics which worked fine, when i tried to convert my schematics into layout , when i tried Assura LVS check,i get an error as shown bellow.I have attached the...
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PPV extraction through PSS simulation
Recently, I’m studying perturbation projection vector(PPV) based phase noise computation. There are three simulation methods to extract PPV, of which PSS is the fastest and most convenient method. As...
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Problem of phase noise file used in vsource/port
Hi,I want to put the phase noise file into the vsource/port for a PLL phase domain simulation. The phase noise file is from a VCO PSS+Pnoise simulation and is saved as ".in.spectre" format. If the unit...
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