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owl [soylentnews.org] writes:

Join us as we crack open an HB100 Doppler radar module and delve into the mysteries of RF component design.

In this special edition of Teardown Tuesday, we crack open an HB100 Doppler radar module and delve into the mysteries of RF component design.

The HB100 Doppler Radar module costs about $5 from the usual online suspects, which is down at the “insanely cheap” end of the spectrum when you’re talking about 10Ghz radio gear. Does it work? Surprisingly, yes. It needs some support components for most uses (like a post-amplifier for the “couple of millivolts” signal it outputs) but does its part of the job well enough.

Original Submission