Assuming operating frequency is 106MHz and power is -20dBm, is it possible that an FM radio frequency energy harvesting system is powering the olfactory e-nose sensor in an AI self-driving car?
It is around 10 microwatt power required to drive your system. Energy harvesting techniques can scavenge cited power. More study is required to examine FM signal level (varies country to country) as an energy source. Vibration energy harvesting can certainly scavenge 10 micro watt.
-20dBm is 10 microWatt. The best energy efficiency demontrated for such conditions is perhaps 20..40%. E.g. as in the plot below taken from
Article RF energy harvesting systems: An overview and design issues
It is quite small power e.g. Lithium coin battery may provide such power over several years.
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