Study of One stage multi-port Wilkinson Power Combiner for Wireless Power Transfer Application

• Main Authors: TSAI, WEI-CHUN, 蔡惟鈞
• Other Authors: CHEN, JA-HAO
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/s9j47z

碩士 === 逢甲大學 === 通訊工程學系 === 106 === A one-stage six-way Wilkinson power combiner for improving the efficiency of 2.4 GHz microwave wireless power transmission system is proposed. The proposed power combiner is with small area and low-loss characteristics, that can greatly reduce the size of the transmitter and the receiver. Compared with traditional Wilkinson power combiner, the area of the proposed combiner can be reduced by more than 40%. The reflection loss and insertion loss performances of each port are greater than 10 dB and about 8.3 dB, and the isolation between each port is greater than 20 dB. Integrate this circuit into the microwave wireless power transmission system. In the transmitter, the transmitted power which is combined form output power of six power amplifiers with utilizing proposed combiner can achieve to 38.8 dBm. In receiver, for improving the efficiency of the receiving energy, the received power is integrated from six antennas with using the proposed combiner. In the experiment of this study, the LED is used as a load in receiver, and the LED lamp can still be lighted at a distance of 25 meters.