Walsin Technology - Walsin Technology Corporation, part of the Passive Systems Alliance Taiwan, is a leading supplier of RF passive devices. The Walsin offering includes Bluetooth® , GPS and WiMAX® chip antennas, high frequency band pass, balanced and low pass filters, balun transformers, diplexers, and common-mode filters. Walsin's customer base spans the globe with products used in automotive, consumer, industrial or medical applications, the PSA family of RF Devices provides a broad lineup to cover your design needs.