I have the following waveform from a Radar thats IVQ-3005 https://www.innosent.de/fileadmin/media/dokumente/datasheets/180222_Datenblatt_IVQ-3005.pdf
That Radar is using the PLL ADF4158 http://www.analog.com/media/en/technical-documentation/data-sheets/ADF4158.pdf
I'm using a sawtooth as modulating carrier signal, what is in the following picture is a detected wall.
Why the waves are not real sin waves ?
Is that a problem of the gain of the IF signals that is controlled by a digital potentiometer ?
Or is it a problem of the generation of the sawtooth signal ?
Note that the signals are I1, Q1, I2, Q2