AD8318 RF Logarithmic Detector/Controller

/*
Here's an example code for interfacing the AD8318 RF Logarithmic Detector/Controller with an Arduino. This code will allow you to measure the RF power level in dBm within the 1-8 GHz frequency range.

This code initializes the AD8318 RF Logarithmic Detector/Controller on analog pin A0. It reads the RF power level in dBm every second and prints it to the Serial Monitor.

Please note that you'll need to configure the AD8318 for the desired frequency range according to the datasheet. Also, be sure to check your specific board and sensor specifications before using this code. Working with RF signals can involve safety considerations; take all necessary precautions and safety measures while working with RF circuits.
*/


#include <Arduino.h>

const int ad8318Pin = A0; // Analog pin connected to the AD8318 output (Vout)

const float VOLTAGE_REF = 5.0; // Reference voltage of the Arduino (5V for most boards, but check your specific board)
const float SLOPE = -25.0; // Slope in mV/dB (Typically -25 mV/dB for AD8318, but check your datasheet)
const float INTERCEPT = 20.0; // Intercept in dBm (Typically 20 dBm for AD8318, but check your datasheet)

void setup() {
  Serial.begin(9600);
  pinMode(ad8318Pin, INPUT);
}

void loop() {
  float powerLevel = readRFPower(ad8318Pin);

  Serial.print("RF Power Level: ");
  Serial.print(powerLevel);
  Serial.println(" dBm");

  delay(1000);
}

float readRFPower(int sensorPin) {
  float sensorVoltage = analogRead(sensorPin) * (VOLTAGE_REF / 1023.0);
  return (sensorVoltage * 1000.0) / SLOPE + INTERCEPT;
}