Antenna VSWR Bridge Kit — Measure Antenna Match with Arduino Uno, AD8307 Log Amps & OLED Display

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Radio amateurs, students, and makers often need a simple way to verify antenna match quality before transmitting. A directional coupler samples forward and reflected power, and this kit turns those samples into a precise VSWR reading. The OLED display shows VSWR and match condition instantly, so you protect your transmitter and understand your antenna’s behaviour without expensive lab gear.

What You'll Build

A self-contained antenna VSWR meter that uses the directional coupler and dual AD8307 logarithmic amplifiers to capture forward and reflected RF power. The Arduino Uno reads both channels, calculates VSWR, and drives a 0.96‑inch OLED that displays VSWR, return loss, and a simple match‑quality indicator. You’ll end up with a portable tool for testing homebrew antennas, ham radio setups, or school RF experiments—no oscilloscope or spectrum analyser required.

What You'll Learn

• Using AD8307 log amp ICs to detect RF power from directional coupler outputs
• Calibrating a directional coupler for accurate forward and reflected power measurement
• Reading analogue sensor data with Arduino Uno and displaying results on an OLED screen
• Interpreting VSWR and return loss to assess antenna performance and match quality
• Practical RF circuit assembly on a breadboard with proper grounding and decoupling

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11–12 students building physics or electronics projects will find this kit aligns with lab work on RF communication. B.Tech ECE/EEE first‑year students exploring antenna theory get a hands‑on measurement tool. Ham radio enthusiasts can build a portable antenna analyser for field days. ATL Tinkering Labs and school innovation clubs can use it to teach sensor integration and real‑world RF measurement without expensive equipment.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.