Decoupling Network Raises Antenna Port Isolation

摘要

Through the use of multi-element antennas, wireless systems are accommodating increasingly higher data rates. At National Chiao Tung University (Hsinchu,Taiwan), a compact decoupling network for enhancing the port isolation between two closely spaced antennas has been investigated by Shin-Chang Chen, Yu-Shin Wang, and Shyh-Jong Chung. Using the proposed decoupling structure, two examples of printed antennas at 2.45 GHz were created. Isolation between the antennas went from 3 dB to more than 20 dB at the center frequency. Input return losses remained better than 10 dB.