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Effect of decimation, tuning (mixing) on phase noise
Started by 1 year ago●9 replies●latest reply 1 year ago●231 viewsIf I build an analog receiver using a DDS where the DDS is my local oscillator (LO), based on a reference oscillator with phase noise ℒ(n), as I decrease the...
Adding 45 degrees phase shift to a FIR bandpass
Started by 8 years ago●15 replies●latest reply 1 year ago●2199 viewsDear sirs, I have a question regarding the calculation of filter taps for a FIR bandpass filter with additional phase shift of approx. 45 degrees. Background: shortwave...
I am trying to find a mathematical model to understand the correlated phase noise. In the link https://www.markimicrowave.com/blog/does-a-mixer-add-phase-noise/
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Is there any DAC math model around?
Started by 1 year ago●18 replies●latest reply 1 year ago●255 viewsHi All,I assume Matlab and other math tools do not have a dedicated function to model DAC or ADC.I will try model DAC in digital domain:- generate a clean single...
I am having difficulties accepting the validity of FFT interpolation / time domain zero padding. When a section of time data of length T is selected from which...
Sampling Rate conversion with arbitrary and variable ratios
Started by 1 year ago●14 replies●latest reply 1 year ago●638 viewsHi Folks, I would like to ask you about a non-very common topic... Arbitrary Ratio Sampling Rate conversion... With this, I want to refer to resampling of...
ADXL1002 signal processing for condition monitoring application
Started by 1 year ago●11 replies●latest reply 1 year ago●232 viewsI am a fresher in the field of condition monitoring. I have been working on a condition monitoring project for rotating machines using ADXL1002 accelerometer. I...
Difference between averaging and decimation on oversampled data
Started by 1 year ago●4 replies●latest reply 1 year ago●550 viewsIn my project I am oversampling the data (12 bit ADC) for the following reasons,1. To relax the antialiasing filter requirements before the ADC.2. Increase or...
Hi All,if you google "fft process gain" you get plenty hits including various analysis down to bin spread concepts.However, I notice that this can be viewed in a...
Single-bit long-range low-power communication
Started by 1 year ago●7 replies●latest reply 1 year ago●218 viewsSuppose I want to send a single bit (like an SOS) from some remote location using a low-power RF transmitter. The transmitter emits a pure tone at some frequency,...
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