A Precise Harmonic Control Technique for High Efficiency Concurrent Dual-Band Continuous is Class-F Power Amplifier
A Precise Harmonic Control Technique for High Efficiency Concurrent Dual-Band Continuous is Class-F Power Amplifier
复制标题
高效率并发双频连续F类功率放大器的精确谐波控制技术
DOI：
10.1109/access.2018.2870865
复制
发表时间：
2018-01-01
期刊：
影响因子：
3.9
通讯作者：
Yu, Zhiqiang
中科院分区：
文献类型：
--
作者：
Yang, Zhenxing;Yao, Yao;Yu, Zhiqiang
In this paper, a design approach for a high-efficiency concurrent dual-band power amplifier (PA) with precise harmonic control up to third order is proposed. With the precise harmonic control approach, the high-efficiency performance of the PA can be improved at two arbitrary wide interval frequencies. Based on the inherent impedance matching flexibility of the continuous Class-F (CCF) operating mode, the design spaces of fundamental and harmonic impedances of the PA are largely expanded. The optimal impedances of a CCF PA mode at the internal current-generator (I-gen) plane and package plane are investigated, respectively, and a novel dual-band matching network topology is designed to simultaneously present required load impedances at the fundamental and harmonic impedances of both operation frequencies. First, a harmonic control network is designed to control the harmonic impedances precisely for CCF operation. Then, the fundamental impedances are synthesized using the real frequency technique. To verify the validity of proposed methodology, a dual-band CCF PA operating at 2.6 and 3.5 GHz is designed, fabricated, and measured. The measurement results show that the peak drain efficiency is 76.7% with an output power 42.4 dBm at the lower band and 72.8% with an output power 41.1 dBm at the upper band.
