Very often it is necessary to measure standing wave ratio SWR or transmission power of a device. The presented design is a classic system of power and SWR measurements, except that to calculate and display the results of measurements, it uses Atmega8 microprocessor.

The device is based on the measurement system:

Illustrated results:

The program was written in Bascom. Material published in attachment (original thread) should be treated as a teaching resource. Prototype of the device worked properly and the results of measurements do not differ from factory meters.

Link to original thread (useful attachment) – Cyfrowy miernik SWR i mocy