Design Professional NFC & RF Antennas — Free

Calculate inductance, synthesize impedance matching networks, and export production-ready PCB layouts — all in your browser. No signup required.

Everything you need to design antennas

• NFC Antenna Calculator — Compute inductance using Wheeler's formula for 13.56 MHz antennas
• RF Antenna Designer — Design antennas for multiple frequency bands and styles
• Impedance Matching — Automatic matching network synthesis (L-network, Pi-network)
• ISO 14443 Compliance Audit — Verify your NFC antenna meets ISO standards
• PCB Export — Export designs as Gerber files or KiCad projects
• AI Analysis — Get AI-powered design recommendations
• Multiple Shapes — Square, circular, hexagonal, and octagonal antenna geometries

Supported Antenna Types

Design antennas for NFC (13.56 MHz), RFID, Bluetooth, WiFi, LoRa, GPS, and custom frequencies. Supports popular NFC chips including ST25R, PN532, RC522, and more.

Launch the Antenna Designer | Engineering Handbook | Blog

From the Blog

• NFC Antenna Design Guide
• PCB Antenna Design Tutorial
• 13.56 MHz Antenna Calculator Guide
• Antenna Matching Network Calculator
• NFC Antenna Simulation
• RFID vs NFC Antenna Design