
FMCW radar - All About Circuits
Nov 29, 2020 · Hi team Does anyone come across a FMCW radar (module) in the sub 24Ghz range? thanks team!
Fast Bipolar -10v+10v analog signal isolator - All About Circuits
Dec 18, 2025 · Please note I haven't made a board in my life except some esp32 stuff to manage my home automation. But I'm good with soldering and have basic electronic knowledge.
Long Range PIR sensor. - All About Circuits
Jan 18, 2025 · The new FMCW radar detectors actually use intelligent discrimination and they are quite inexpensive, less then $20.00USD for a very sophisticated one. You can tune the parameters via a …
simulation of chirp signals - All About Circuits
Nov 6, 2014 · Hi guys, I am new to this forum and also new to using LTspice. I have a project on simulation of chirp signals, please I will really appreciate if anyone can tell me how to simulate a …
Seeking a review of Siglent SDS1204X HD - All About Circuits
Apr 10, 2025 · This is a 12-bit, 4 chan, 200 MHz scope that I recently purchased and wondered if anyone here also has this scope or knows of a written review of the scope...
Best approach to sweep 410-525 MHz? PLL/VCO vs ramped timer vs …
Nov 26, 2025 · I need to implement a frequency sweep covering 410-525 MHz. I’m considering several approaches but want advice on real-world practicality: Simple ramp voltage → timer IC → ??? (drive …
Fast Bipolar -10v+10v analog signal isolator - All About Circuits
Dec 18, 2025 · ±10V analog isolators are not common: Here (Figure 12) is a reference on how to build one using two op amps and two linear opto isolators. Of course isolation requires no common ground …
Measuring short distances using radio waves - All About Circuits
Apr 30, 2023 · Look up FMCW (frequency-modulated continuous-wave) radar. Use something in the 915-930 MHz band (because that's open - in the US anyway). You won't need to measure in …
Generating composite video using only basic chips - All About Circuits
Aug 30, 2016 · Hi all, I am looking for a way of generating composite black and white NTSC or PAL video signals using only basic chips like the CMOS 74HC series, clocks...
Radar -- Sub-Miniature Radar for Detecting Motor Vehicle Movement
Jan 4, 2024 · I am searching for a tiny radar transmitter/receiver that can detect a slow-moving motor vehicle but only vehicles moving directly towards the radar source (doppler?). Detection range would …