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11 Threads found on edaboard.com: Fourier Cadence

How to use the cell fourier in analogLib of Cadence?

I am having difficulty in using fourier cell in cadence. Could anyone explain these? Thanks. "Model name": which and where is the model? "Fundamental Frequency": is this the sampling frequency? "Min no. of time points": one sample time? "Order of interpolation":what does this mean? "Number of Harmonics": ? "Number of reference Harmonics":

How can I get spectral response (frequency domain) of an oscillator like shown in pic

You should expand this waveform into Discrete fourier Transform by using Calculator of cadence.

Measured SNR and SNDR versus differential signal amplitude in cadence

What kind of analysis used? An FFT (Fast fourier Transformation) analysis. With the tabular outputs of such an analysis you can generate such curves using the wavetool, or by exporting the FFT result values to an appropriate presentation tool like Excel, Matlab ...

SNR calculation of Delta Sigma ADC after Modulator and After Decimation

hello Eminent.Engineer, I hve also designed a delta sigma ADC and i calculate the SNR order to caculate the SNR after the modulator you must make the fast fourier transform function (FFT) by MATLAB after the modulator. About the decimation,until now i have designed the complete ADC in Smulink (MATLAB) then by using cadence, i only designed t

How to get the spectrum of a singal in cadence spectre?

Yes... After doing a transient simulation, you have to do DFT ( Discrete fourier Transformation) to obtain spectral intensity of a periodic signal... For more information, see spectre user's guide...

In amplifiers, if the input signal frequency is low enough, I would suggest avoid transient sim (+DFT) or flex-balance (just like HB) in Spectre(RF). The easiest way is to use DC simulation, and through VerilogA function and calculator to find the fourier series coefficients. You can obtain much more insight in DC sim and avoid possible settling

How to use the cell fourier in analogLib of Cadence?

hi, how to use the cell fourier in analogLib of cadence

Weird THD results of a SH circuit

Dear Friends I designed a SH circuit as first stage for my pipeline ADC. I use cadence Analog Design environment and spectre for simulations. I performed a DFT analysis on data obtained by transient analysis (coherant sampling, strobeperiod option used). The plot looks fine. I also included the "fourier" component from the "analogLib" to g

about total harmonic distortion

An easy to determine the THD/SFDR or whatever, is to make use of the component fourier/fourier2ch. These two components are located in analogLib and they are specific to the cadence simulator spectre. If you place them in a schematic and run a transient anaysis, you will get the fourier coefficients of the corresponding (...)

How to calculate the 3rd harmonic distortion in Cadence?

You can also run a fourier analysis. It uses the fourier Integral to calculate the distortion products.

fourier spectrum by cadence

How to use fourier and fourier2ch components in analogLIb of cadence to get spectrum by transient analysis?