Compact directional coupler using semiconductor process and mobile RFID reader transceiver system using the same

摘要

Disclosed herein is a mobile Radio-Frequency Identification (RFID) reader transceiver system comprising a compact directional coupler. The RFID reader transceiver system includes a primary transmission line (31), a secondary transmission line (32), and a second capacitor (34). The primary transmission line is formed on a semiconductor substrate. The secondary transmission line is formed on the semiconductor substrate. The second capacitor is connected in parallel to the secondary transmission line.