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pnoise noise separation & pac analysis contradicitng
Hi,I am simulating a circuit with nonlinearity, time variance & frequency translation. The output Vout=(V1) + (V2) .I used pnoise+noise separation to find transfer function from drain noise of M1...
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Problems with IIP3 with PSS and PAC analysis
Hi I am working on a (passive like) CMOS attenuator and my problem is that when I do the IIP3 with PSS and PAC analysis my third harmonic is not increasing by 3dB. It is much lower. Me and my thesis...
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Time delay on an FMCW signal
I am trying to build a simple ciruit to delay an FMCW signal (frequency range of [1-10] Ghz) with mutiple of 50 pico second (ps). A bank of delays with mutiple of 50 ps, i.e., 50 ps, 100 ps, 150 ps,...
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Spectre and Simulink cosimulation
Hi,I would like to include a Cadence simulation in my simulink system-level simulations.However, Cadence runs on a centralized CAD server whereas MATLAB/Simulink on my own machine.I can successfully...
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Parameterizing the Finger No of MOS in the PDK
Dear All,I am trying to create a parameterized inverter. I am using pPar("W_p") and pPar("W_n") for PMOS and NMOS total widths.pPar("Fing_p") & pPar("Fing_n") for no of fingers for PMOS and...
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Simulink SpectreRF connection problems
Hi,I am playing with the SpectreRF Engine Simulink connector and face severe problems.First of all, it is unuseable slow!I created a simple RF passive mixer. If I simulate it in Spectre alone it is...
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Cadence license for IC616
Hello,We are currently using IC5141 and have the license present on a server. Now we want to install new version of Cadence IC616 on some of our machines for which we need to update the license. The...
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Noise gain to internal vgs using AC analysis
Hi,I have attached BSIM equivalent model. I want to know the (transresistance) transfer function from drain channel noise source to the internal vgs of the MOSFET (Not between external G and S but...
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Plotting gm and its harmonics in a mixer
Hi,What is the cleanest method of plotting gm and its harmonics in a transconductance mixer?
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pnoise and pac contradiction
Hi,First I want to know hoe does spectre compute flicker and thermal noise1) using a current modelbetween drain and source2) using a voltage model at the gateI am using BSIM 4.5 models where doc says...
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Cadence Hotfix error
Hello,While installing Cadence version 6, we have installed all the necessary packages successfully and we can open the schematic environment even but the hotfixes of Assura 141 and IC616 are giving...
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Noise correlation simulation in pnoise
Hi,1. I am using IC6.1.6-64b.500.1 and my simulator version is 10.1.1.296.isr18 64 bit2. I am simulating a basic downconversion mixer as shown in attached figure. I want to know the correlation...
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Smith Chart Bug
Somehow when you add label in Smith Chart Plot window, it's really difficult to move label marque on smith chart and sometimes impossible to edit label captions.Hope someone fixes it in next release.
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Spectre temperature coefficient oddness
We have a tool that makes subcircuit models of passive components (an integrated inductor in this example). It can now produce models that have temperature dependence, and in that case the output...
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oscillation frequency estimate using harmonic balance
Hi, I am working on a crystal oscillator. I want to estimate frequency pulling over temperature caused by circuit (excluding crystal). I am looking at something around 0.01ppm/C level or less. It...
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Parameterizing the Finger No of MOS in the PDK
Dear All,I am trying to create a parameterized inverter. I am using pPar("W_p") and pPar("W_n") for PMOS and NMOS total widths.pPar("Fing_p") & pPar("Fing_n") for no of fingers for PMOS and...
View ArticleClik here to view.
Simulink SpectreRF connection problems
Hi,I am playing with the SpectreRF Engine Simulink connector and face severe problems.First of all, it is unuseable slow!I created a simple RF passive mixer. If I simulate it in Spectre alone it is...
View ArticleClik here to view.
Noise gain to internal vgs using AC analysis
Hi,I have attached BSIM equivalent model. I want to know the (transresistance) transfer function from drain channel noise source to the internal vgs of the MOSFET (Not between external G and S but...
View ArticleClik here to view.
Plotting gm and its harmonics in a mixer
Hi,What is the cleanest method of plotting gm and its harmonics in a transconductance mixer?
View ArticleClik here to view.
pnoise and pac contradiction
Hi,First I want to know hoe does spectre compute flicker and thermal noise1) using a current modelbetween drain and source2) using a voltage model at the gateI am using BSIM 4.5 models where doc says...
View Article