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Meaning of the "Event Time" in Direct Plot form of Pnoise Jitter
Dear All,I am doing Pnoise-Jitter analysis (for both Rise and Fall edge).In the direct plot form I see Event Time (Please see the attached Snapshot).What it actually means ? Kind Regards,
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Noise Figure of LNA with an input tone (using hb/hbnoise)
Hi all,First of all, I am using version MMSIM 13.11.176 and Cadence IC6.1.6-64b.500.14.I have the following question:I want to simulate the Noise Figure of an LNA by applying an RF tone (frf=1.575GHz)...
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VCO output power
Generally the output power of VCO doesn't remain constant and that is its drawback. What could be the reason behind varying output power of VCO?
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Cavity Filter WR 90 based and horn antenna
Hi,Would it be simpler to perform an EM simulation of the above mentioned filter using CST or ADS rather? Which would be the better tool for the task? Same question, for producing radiation curves in E...
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Getting Oscillator PPV waveform in pnoise analysis
Dear All,I would like to see the perturbation projection vector(PPV) waveform which is used, e.g. to calculate phase noise in an oscillator in pnoise analysis by Specre.From the PPV wave form one can...
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Capacitance vs Bias Voltage Curve for Ferroelectric Varactor
Hi,I have created a passive circuit model with equation and passive elements of a ferroelectric varactor. I want to use it while designing in many RF applications like VCO and other applications. Now...
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RF coil design
Hello,i'm doing some rf coil, with tuning capacitors, simulations using HFSS. The impedance bandwidth is very very narrow (S11), which is expected. I found that when i changed some minor values in the...
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Suggestion for Primer design and conditions
Hello,I have used RF-cloning successfully several times. Recently I have attempted to substitute 8 aa using the technique. I have made two sets of primers that are slightly different. Both sets have...
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Large Signal Y-Parameters
Dear All,This thread from a few years ago, https://community.cadence.com/cadence_technology_forums/f/rf-design/33221/large-signal-y-parameter-or-s-parameter, concerns large-signal y-parameters. The...
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Captab in cadence
Hi all,I Wanted to get the transistor parasitic capacitance in a circuit so I printed DC operating Point. The values were negative so I gave up and started to find other ways. I found that there is a...
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Multiple S-parameter simulation in same testbench
Hello, I want to do s-parameter simulation of more than one in same testbench. The thing is I have extracted .s4p file of a real differential channel and I have created passive differential channel...
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Input impedance calculation using DFT for Radio Frequency
HiI am trying to find the input imepdance of an RF rectifier circuit by using FFT in cadence. The equation I'm using is Zin = DFT(Voltage)/DFT(Current) at the required...
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SpectreRF pnoise error SPCRTRF-15397
Hi,I have a question about a spectreRF error when running harmonic balance pnoise. for a VCO.It was able to run a pss succesfully, but when it starts running the pnoise, I get the following...
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Transient Simulation with NPORT from analogLib
I am using ICADV12.3-64b.500.11.I have simulated a set of interconnects in ADS Momentum. I have then saved the S-parameter data into a ".snp" file using ADS' "Data File Tool" Option. I have added a...
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step by step RFIC Cadence Virtuoso manual
Hello , i am trying to learn implementing RFIC circuits in cadence virtuoso, basic mixer ,PLL etc..i am looking for a fine step by step manual(showing which button was pushed on every step) for...
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Momentum/Dynamic Link/GoldenGate Errors with Cadence Virtuoso
Hello, I am running Cadence Virtuoso 1.6.4 with Agilent/Keysight ADS 2011 with Dynamic Link/Golden Gate tools for running Agilent/Keysight Momentum simulations with Cadence Layouts in Virtuoso. With...
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converting ams 350nm design into gpdk 90 nm
Hello , there is a manual that implements a gilbert cell mixer with ams 350nm i want to convert it to work also on gpdk 90nmwhat adjustments do i need to do , so it will give me the same result in...
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How to save PSP analyses result into an sNp file?
I have found no way to save the S-parameters of a PSP analysis directly. In ViVA we can not really plot a complex waveform, since we have only two dimensions, so exporting a trace will not work. I...
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GPDK090 I V characteristics
Hello, i am trying to build I_ds/V_ds curves from nmos1v gpdk090.what Vdd to use?what is the V threshhold?is there some basic step by step manual that shows how to build IV carateristics of gpdk090?Thank
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How to set input power in transient simulation?
Dear allI am currently working on RF rectifier which has an equivalent circuit as shown in fig below. I have calculated Zin =...
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