hobby #181
Microwave Interferometry
Measuring RF wavelength and phase using standing wave patterns and interference techniques. Combines optical interferometry principles with amateur radio hardware to visualize electromagnetic wave behavior at centimeter wavelengths—same fringe-counting precision as optical work, but with waveguide slotted lines, crystal detectors, and 10 GHz signal sources.
Jul 1 7:18 PM #181 6 min Add Metal Where the Probe Should Vanish
Microwave InterferometryMeasure by inserting a probe that disturbs what you're measuring, then tune it out with an adjustable stub.
code-a-day tied to this hobby
- I/Q Quadrature and the Two-Channel Phase Detector Quadrature Signal Processing