Hello, I work with a team in Berlin that deploys robots to nursing homes to support staff at nighttime. We would like to evaluate the use of radar in sensing residents' breathing rate through walls. We were inspired by Dina Katabi's work (e.g. Vital-radio, RF-capture, RF-Avatar, etc) where they were able to estimate human poses as well as heart rate + breathing through walls. We're experimenting with similar FMCW approaches with Software-defined radios (SDRs) but might want to swap to CW/UWB/SFCW or WiFi due to there not being any off-the-shelf sub-10GHz FMCW radar hardware out there. We were exploring if TI's radars could be of use to us but the 77GHz and 60GHz variants have too high a frequency for good penetration through walls, we have found out many times that sub-10GHz or even sub-3GHz is needed for the best penetration through walls. We would like to do this for up to 8m behind the wall. These are our requirements.
I was talking to a friend who works in telecoms and he mentioned that TI would be able to "give you a work around to generate a sub-10GHz Frequency on top of one of their development boards (extension [external clock ..etc])". It would be great if this is possible, I'm happy to discuss more about this and answer questions.