Frequency Measurement of HB100 Doppler Radar with BNC 865 Signal Generator

Описание: An indirect frequency measurement that is, using the HB100’s own mixer …
↓↓↓ Complete description, time index and links below ↓↓↓

I wanted to measure the transmit frequency of my HB100 Doppler radar modules. Unfortunately I don’t have a 10GHz scope or spectrum analyzer. But I still had that Berkeley Nucleonics Model 865 microwave signal generator in the lab.

And so I measured the HB100’s oscillator frequency by feeding a microwave signal of a known frequency into its receive patch antenna, using its own frequency mixer to measure the frequency difference between that signal and its oscillator.

00:00 Intro – what’s the transmit frequency of my HB100?
01:48 HB100 – by the numbers from the datasheet(s)
02:20 How not to – measure the frequency
03:15 How to - measure it with a 10GHz scope or spectrum analyzer
03:55 Spectrum analyzer – has a frequency mixer at its heart
05:21 Frequency mixer – at the heart of a Doppler radar
06:49 Indirect measurement – of the frequency with a signal generator
16:30 Temperature stability – non existent
17:39 Second HB100 – frequency even more off
19:04 Results – the cold, hard numbers
21:10 Wrap-up – there’s more than one way to skin a cat

Tutorials    • Tutorials  
HB100 Doppler Radar, Limpkin’s Amplifier and Arduino MCU – The Details (1/3)    • HB100 Doppler Radar, Limpkin’s Amplifier a...  
HB100 Doppler Radar, Limpkin’s Amplifier and Arduino MCU – The Details (2/3)    • HB100 Doppler Radar, Limpkin’s Amplifier a...  
HB100 Doppler Radar, Limpkin’s Amplifier and Arduino MCU – The Details (3/3)    • HB100 Doppler Radar, Limpkin’s Amplifier a...  
BNC Model 865 40 GHz RF / Microwave Signal Generator: Review Part 1    • BNC Model 865 40 GHz RF / Microwave Signal...  
All About Circuits | Teardown Tuesday: HB100 Doppler Radar Module https://www.allaboutcircuits.com/news...

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