Baseband Circuit
RAPID v3 Interconnect
The baseband board is used for filtering, amplifying and AD converting the radar signals from the 4-10 GHz and 24 GHz modules. It has a similar architecture than the baseband circuitry of the 122 GHz module. It is connected to the radar module intermediate frequency signals by a flat ribbon cable. The baseband board is compatible with the standard RAPIDv3 connector wheras the radar modules are connected in parallel to the RAPIDv3 connector.
The main feautres are:
| Parameter | Value |
| Intermediate frequency | 0 - 2.5 MHz |
| Max. gain | 80 dB |
| AD converter | 12 bit, max. 5 MSPS |
| Operation modes | FMCW and CW |
| Baseband high pass filter cutoff | electrical switchable from DC to AC |
| Baseband low pass filter cutoff | electrical switchable from 600 kHz to 2.5 MHz (9th order) |
| Simultaneous signal paths | 2 differential paths, e.g. I and Q channel |
| Power supply | 3.3 V |
| Current consumption | 150 mA |
| RAPID v3 platform | yes |