The board has the following components:

The AD8307 demodulating logarithmic amplifier for the probe with a Slope of 25 mV/dB and intercept of –84 dBm.

MAX187 serial 12-bit analog-to-digital converter
The output of the AD8307 is converted via a MAX187 serial 12-bit analog-to-digital converter to the µC,

The Atmel®AVR®ATmega32 8-bit microcontroller
The microcontroller controls the ADC and the 2 * 16 Character display, the program is written in C. The measured value is calculated from 8192 individual measurements and the result is displayed in mW and pW / nW / μW / mW You can change the settings for slope and intercept via the define.
The software use the LCD library for HD44780 based LCD's from Peter Fleury.