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# Freq Sampling

67 Threads found on edaboard.com: Freq Sampling

## Testing INL/DNL on PCB using ramp signals

add a ramp signal as the source signal. waht's the relation between the freq of ramp and the freq. of sampling? i means what freq of ramp is suitable for testing the static performance . and what about the freq of sin wave for testing the dynamic performance, what's the coherent freq?

## Gaussian Filter in C programming

Hello everyone, Thanks in advance for your kindly help. I'm to use a bandpass filter (preferably Gaussian window filter with 2.4 MHz and 5 MHz cutoff freq.s) to filter out my discrete samples array (8017 samples, sampling rate= 100 MHz), and then obtain the output in C language. Using Matlab fdatool, I obtained the necessary filter coeffici

## (ASK) How to convert speech signal into binary??..

Hi, To convert speech signal into binary, perform the steps - sampling, QUANTIZING AND ENCODING. Step 1: Sample the signal according to sampling theorem i.e., use a sampling frequency greater than the highest freq. component of the message u'r case, the highest freq. component of (...)

## Why Delay line before ADC in ASIC design?

Why delay line is used before ADC? Is it for sampling pupose? How much delay should be in a sytem whose external freq is 1 MHz and internal 6 to 7KHz?

## Discrete Integrator = Discrete Filter?

hi all, if i have a discrete integrator with t.f of Z^-1/(1-Z^-1), can i implement in veriloga using the Z-Transform Filters module? if so, what should i use as the sampling period of filter? the switch freq which samples the signal? thank you.

## Relation between Sampling Frequency and Bandwidth

Hi, 1.What is the relation between sampling frequency and Bandwidth when you are using a Scope? 2.What is the maximum frequency you can measure on a 200 Mhz Oscilloscope? TIA., Regards Deepak

## What is Bandpass sampling? How is it better ?

I think, Its wrong to say that "ordinary sampling carried out at twice the frequency i.e Nyquist criterion?" In fact, IMHO, bandpass sampling is what comes in Nyquist criterion. B'cos it says twice the freq of bandwidth not twice the absolute freq. To be more clear bandpass sampling means (...)

## How to do PSS analysis in Cadence Spectre?

How to do PSS analysis in cadence spectre..I had given PSS run for SC filter with sampling freq=10MHz and fun=3KHz.Its taking very long time to simulate..I am not ablet debug the problem.plz help me?

## Analog / Digital conversion for DSP

hey...here is wat i think may help u.... 1. a filter before the a/d is always advisable.... but u need to know abt the carrier freq to filter it. 2. schmith trigger can be used only if u can make up with certain constrains...like u need to clearly know the delay wid whcih the signal is comin to ur samplin point and even the sampling (...)

## Does increasing sampling size help to keep noise down ?

An analog, low-pass filter prior to the input of the ADC eliminates or significantly reduces aliased noise. The corner frequency of the filter must be lower than fsampling/2. Increasing the order of the filter can minimize the noise.

## How to caculate the necessary sampling time of a SHA?

If you don't mean sample freq, it is the setting time of SHA. It depends on the resolution you want, (for ADC or something) .

## Difference between DTFT and DFT

isnt DTFT the fourier transform of a discrete time signal,so isnt that also discrete in the frequency domain too.. and incase my signal is of and 5 Khz1Khz and sampling freq is 10KHz ,so will a 10 point DFT accurately capture both the frequency components

## low pass filter design using matlab.(program)

hi thank you for sharing the files Added after 8 minutes: how to design -a LPF(fir) by window method sampling freq=100hz and cut off=20khz..without using FFT builtin function. plz can u give me a code(program) to implement this using matlab softwear.please. u can use thes

## How to design a LPF(fir) by window method sampling without using FFT?

Can ne1 help me how to design a LPF(fir) by window method sampling freq=100hz and cut off=20khz..without using FFT

## calculate DTFT of an analog signal

Be clear that in MATLAB you can do only FFT which is a efficient form of DTFT. now lets take a analog signal x(n)= A sin (2*pi*f*t); ( in a PC nothing is analog)... so lets make it Discrete ... and the sampling freq fs = ( 1/Ts) lets and fs > 2*fm .. fm = max freq in our input signal lets take Ts=0.1 for a period (...)

## FFT in MATLAB and SPICE

Try this FFT in spice or spectre: N/(FFT point) = Fin/(sampling freq) N prime number 7,9,13,17,19,23,29,31............. FFT point : power of 2 , 1024,2048,4096,32768,65536 , larger will give a lower FFT noise floor Fin : your input signal Let say, I have 1024 sampled data wit Fs = 10 MHz. How can I can FFT them us

## actual freq to normalized freq

hi all, does anyone knows how to convert actual freq to normalized freq from ? Eg: Actual freq=500hz. sampling freq=5khz. thanks regards scdoro

## Looking for frequency output delayers

I need circuits that can delay a signal with certain freq (1Hz - 100kHz) so the output signal is the same shape and form and frequency as the input but with delayed output appearance Bottom line is i want to reduplicate a signal with variable frequency so that the output is delayed X seconds from the input Any idea?? :cry::cry:

## OFDM - Carrier Freq. offset

"unmatched local osc" means the the RF upsampling oscillator at TX and the RF downsampling oscialltor at RX.. for eg WLAN OFDM (802.11a ) its in the range of 5GHz ... the difference in sampling point and difference in sampling frequency is what which causes the CFO.

## zero padding - increase sampling rate in freq domain

zero padding can not increase sampling rate in freq domain, it increase resolution of frequency domain.