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Thanks for your time and try.
Since this filter (I am designing) is acting as Decimation Low Pass Filter for Delta Sigma Modulator so Fs of the Delta Sigma Modulator is "6500000".
Thanks for the reply. Yes I know but we are doing this just for analysis/experimentation in simulations. Any suggestion how I can design the filter with specs as mentioned above ?
Hello Everyone
I designed a FIR Low Pass Filter using MATLAB's fdatool, filter specifications are:
Fpass = 10K
Fstop = 12.5K
stopband attenuation = 200dB
but the designed filter doesn't show the 200dB attenuation ? The filter's specs and its response in fdatool is attached as images.
Thanks in...
Hello sdedov
I want to store the timing instant at which the output is being stored, how to get this in Verilog-A and $abstime stores values as "0.00000001,0.00000001,0.00000001,0.00000002,0.00000002 and so on", so no difference in first three values, how to get better precision i.e. let say...
Hello Everyone
Would like to know about very basic concept regarding Decimation Process, Let my baseband signal is 1KHZ and it is sampled at very high sampling rate let say 650KHz now I want to downsample the signal to decrease sampling frequency to Nyquist criteria, so what should be the cut...
Hello dipsbals
Perhaps something similar are available at:
https://stackoverflow.com/questions/2692482/get-the-indices-of-the-n-largest-elements-in-a-matrix
https://www.mathworks.com/matlabcentral/answers/48473
Hope this will be helpful.
Hello Everyone,
Delta Sigma ADC:
Modulator = 2nd Order
CIC Filter = 3rd Order
OSR = 256
CIC is hardware efficient Decimation Filter but its frequency response shows passband droop and wide transition band, so my question is due to these non-idealities of CIC filter, How much degradation in...
Hello Dawson,
In my opinion, since you never obtain an impulse in frequency domain for a pure sinusoid, because of implicit windowing that is taking place, i.e., rectangular windowing because you consider sinusoid over limited time. So applying window (hann, hamming etc) to time domain signal...
Thanks for timely reply.
No Interface.
I am doing simulations in MATLAB and I want to plot the input Sine Wave and the Voltage equivalent output on the same plot and also want to calculate the SNR by calculating noise by "subtracting output from input".
Hello Everyone
I have got the output of Delta Sigma ADC after Decimation (FIR LPF and Downsampling), How to convert Delta Sigma ADC's output to its voltage equivalent ? Any suggestions/relevant material will be helpful.
Thanks in Advance.
Hello Everyone
The Delta Sigma Modulator has 1-bit quantizer (so 0s and 1s as output) so Do I need to take 0s and 1s as input to Decimation filter or I need to convert them to -1 and +1, got confused after some literature review, any suggestion will be highly appreciated.
Thanks in Advance.
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