 ## Re: BPSK BW Requirement

Many thanks for the assistance. I read Proakis Digital Communications text book and a tutorial on Shannon in ComplextoReal, the bandwidth is equal to the symbol...

## Re: BPSK BW Requirement

Many thanks for your explanation.In the message,  it states that the 3dB of BPSK is the symbol rate.I thought that the first null either side of Fc every 1/symbol...

## BPSK BW Requirement

I captured a BPSK waveform at RF on a spectrum analyser.  I need to determine the 99% bandwidth.  I have a CSV plot. Does anyone knows how to determine 99% BW...

## Re: Determine Classical Phase Noise from EVM

Thank you. I shall look into this. To determine the classical phase noise of PLL from EVM, do you need to know the integration BW.I understand that integration BW...

## Re: Determine Classical Phase Noise from EVM

Hello,There is no link to the paper. Could you please re-send? Thank you

...

## Re: Complex IF

This is in reference to Python.I also ran the Matlab code.  Does it just plot one graph (Fig.1) showing a complex waveform?

## Re: Complex IF

I get an error when I run the code in Spyder.divide by zero encountered in log10 psd_dB = 10 * np.log10(psd)

## Re: Complex IF

Thank you for the code.I like to  get a common understanding. I can see in the last graph that the spectrum have been inverted due to I and Q being reversed so...

## Re: Complex IF

I read one of the message that swapping I and Q (like in the case described earlier)effectively spectrally invert the waveform. Swapping I and Q reverses all the...

## Re: Complex IF

Many thanks for the explanation. Do I take it the overall waveform would be the same on the spectrum analyser (upconverted signal at f1, image)?For Rx down-conversion,...

## Re: Complex IF

Hello I done some calculations just to prove for myself but the angles calculated are different.  Real=0.5. Imag=0.9 Phase = arctan (0.9/0.5) = 60.9deg now...

## Complex IF

HelloI am building up a RF transceiver using integrated up/down converter chip.This particular chip requires a complex Intermediate Frequency as inputs for up conversion...

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