Pick the right radar before you buy the wrong one.
Most radar projects fail at selection, not at integration. Wrong band, wrong antenna, wrong range assumption — and the sensor ships back three months later. These are the tools and field notes I use to rule options out fast.
Open the range calculator All toolsRadar range calculator
Maximum detection range from power, gain, RCS, bandwidth and integration. The first number to check before any design review.
02Band compliance lookup
Is 24 GHz legal where you are installing? 60, 77, 79 GHz? Country by country, with the rule section behind every limit.
03Technology selector
mmWave vs PIR vs ultrasonic vs LiDAR — what actually survives your environment. In progress.
Why this site exists
I am based in China and work directly with radar manufacturers. That means I see the datasheets, the test reports, the certification files and — more usefully — the failures that never make it into a brochure.
Chip vendors publish excellent application notes about their own silicon. Distributors publish catalogues. Almost nobody publishes the part an integrator actually needs: which module survives a rainy perimeter fence line, and which one quietly degrades at 40 °C.
Everything here is written from that position. No sponsored rankings, no affiliate-first recommendations. When I do earn money it is from sourcing, and I say so on the about page.
Start here
- You have a range requirement — run the range calculator first. Half of all "the radar doesn't work" tickets are a 4th-root problem.
- You have a site selected — check the band. 24 GHz is being squeezed out in Europe; 60 GHz is unlicensed but short; 77/79 GHz is automotive-first.
- You have a shortlist — read the guides on how to verify a manufacturer is actually a manufacturer.
Have a radar requirement you cannot pin down?
Describe the application — what you detect, at what distance, indoors or outdoors, and what it has to survive. I will tell you which architecture fits and which to stop considering.