W3108
Overview
The W3108 from Pulse Electronics is a compact surface-mount helical antenna designed for the 2.4GHz ISM band. It offers a 1.5dBi gain in a small 2.5mm x 5.0mm footprint with a height of 5.5mm. This component is optimized for WiFi, Bluetooth, and ZigBee applications where PCB space is limited but reliable wireless connectivity is required.
Why Choose This Part
The helical design provides a smaller footprint than traditional ceramic chip antennas while maintaining a 1.5dBi gain. It is fully SMD compatible and designed for lead-free reflow soldering, making it easy to integrate into high-volume automated assembly lines. The -8dB return loss ensures efficient power transfer from the RF front-end within the 2400MHz to 2483MHz range.
Applications
Key Specifications
Getting Started
When integrating the W3108, strictly follow the manufacturer's recommended PCB land pattern and clearance zones to ensure optimal resonance. Engineers should perform impedance matching using a pi-network (shunt-series-shunt) to tune the antenna to exactly 50 ohms in the final enclosure environment. Pulse Electronics provides detailed layout guidelines to maintain the specified 1.5dBi gain.
