AD8318 RSSI Meter

[@Yuēhàn24]

The meter you have created is an RF field strength meter not a receive signal strength indicator RSSI, An RSSI is to be found on a Radio receiver or transceiver. To measure relative received signal strength.

[@dennisk.5829]

Hi,can I attach a 2.4 GHz antenna to the input to measure the signal strength of the specific frequency. The values will be double checked using a spectrum analyzer. How accurate it is?

[@Non-Existent03]

thank you very much!

[@dipankarsutradhar]

Hi Sir, can you explain why the slope and intercept values are taken as -0.025 and 0.020 ; rather than -24.5 and 22 as mentioned in AD8318 datasheet for 900MHz?

[@ke6chris]

The slope and intercept values on the data sheet are in mV.

[@dipankarsutradhar5551]

@@ke6chris Thank you for the confirmation

[@zainulhakim9583]

can you show your full Arduino ide code? im using this for my final year project. Please. Thank you

[@ke6chris]

#include
float Vout = 0;
float val =0;
float voltage =0;
LiquidCrystal lcd(9, 8, 7, 6, 5, 4);
void setup() {
Serial.begin(9600);
lcd.begin(8, 2);
lcd.print("RSSI ");
}
void loop() {
val = analogRead(A0); //read the input on analog pin 1
voltage = (val*5.0) / 1023; // Convert the analog reading
Vout = - (voltage /(.0245) + 22);
if (val < .1)Vout = 0.00;
Serial.println(Vout);
Serial.println(val);
lcd.setCursor(0, 1);
lcd.print(Vout);
delay(1000);
}

[@zainulhakim9583]

Chris's Workbench thanks much!

[@zainulhakim9583]

What if i use AD8310? Is it different? How is it

[@ke6chris]

@@zainulhakim9583 AD8318: 1 to 8000MHz 60dB range , ±0.5 Temp Drift, 10ns response time, 16-Lead 4x4 mm CSP 50 ohm drive
AD8310: dc to 440MHz 60dB range, ±1 Temp Drift, 15ns response time, 8-lead MSOP
Different calibration graph

[@usairummirza9617]

@@ke6chris HI! how will the code change for different frequencies?