SWRZ071D May 2017 – December 2020 AWR1243
Synthesizer Frequency Nonlinearity around 76.8 GHz when Synthesizer (Chirp) Frequency Monitor Enabled
AWR1243 ES1.0, AWR1243 ES2.0, and AWR1243 ES3.0
When the synthesizer (chirp) frequency monitor is enabled and the synthesizer chirp is around 76.8 GHz, the frequency error can be as high as 500 kHz due to coupling between the monitor and the synthesizer. The RF frequencies impacted are 500Mhz around 76.8Ghz (76.8 ± 0.5 GHz).
Implication: Increased nonlinearity in the chirp can lead to up to 20 dB degradation in the noise floor surrounding large objects. This leads to potential loss of dynamic range when large and small objects are present simultaneously.