RF Interference Detection: Cellular "Ping" Analysis Using the AD8317 Logarithmic Amplifier and High-Speed Sampling Project Overview This project investigates the electromagnetic interference generated by cellular devices during data transmission "pings." By utilizing an AD8317 , we convert RF signals from the 1MHz to 10GHz range into measurable DC voltages.

The core of this study focuses on Signals, specifically comparing how low-speed Analog to Digital Converters can miss critical interference data that high-speed ADCs capture clearly.

Hardware Stack RF Sensor: AD8317 Demodulating Logarithmic Amplifier

Microcontrollers: * Arduino Uno R3 (paired with ADS1115)

Arduino R4 Minima (Internal ADC for high-speed capture)

External ADC: ADS1115 (16-bit, but limited to 860 SPS)

The Problem (Phase 1 vs. Phase 2) In Phase 1, we utilized the ADS1115 at its maximum 860 Samples Per Second (SPS). While accurate in voltage resolution, it proved too slow to catch the nanosecond-duration pulses of 4G/5G signals.

Finishing Accuracy was around 99% Data is saved from testing. Over 1000 different data points.

Submitted to Synopsys Science Fair 2026 Awards: IEEE Award 1st Place
3rd in Electrical Engineering Category (Honorable Mention)