访问量:   最后更新时间:--

刘发林

博士生导师
硕士生导师
教师姓名:刘发林
教师英文名称:LIU Falin
电子邮箱:
学历:博士研究生毕业
联系方式:0551-63601922
学位:工学博士学位
职称:研究员
毕业院校:中国科学技术大学
所属院系:信息科学技术学院
学科:电子科学与技术    信息与通信工程    
其他联系方式

邮编:

办公室电话:

邮箱:

论文成果
Design of a Fully Integrated Wideband Continuous-Mode Asymmetrical Doherty Power Amplifier in GaN-on-SiC HEMT Technology
发布时间:2024-07-30    点击次数:

DOI码:10.1109/TCSII.2024.3434572

所属单位:国立新加坡大学,中国科学技术大学,香港城市大学

教研室:Dept. ECE, Dept. EEIS, Dept. EE

发表刊物:IEEE Transactions on Circuits and Systems-II: Express Briefs (Early Access)

关键字:Broadband, Doherty power amplifier (DPA), monolithic microwave integrated circuit (MMIC)

摘要:In this brief, a novel continuous-mode asymmetrical Doherty power amplifier (CM-ADPA) is proposed. It is illustrated that by applying complex impedance at the power combining node, the continuous-mode impedance condition can be obtained for the main amplifier at both saturation and output power back-off (OBO) to obtain broadband high-efficiency performance. To further expand the bandwidth, an LC-ladder-based lumped Wilkinson divider and impedance inverter are employed for wideband power division and phase alignment between sub-amplifiers, respectively. To validate the proposed topology, a CM-ADPA monolithic microwave integrated circuit (MMIC) is implemented with a highly compact die size of 2.2 × 1.8 mm2 . The fabricated MMIC obtains a 4.4-5.6 GHz bandwidth. Within the operating band, the DPA exhibits a saturation output power of 40.7-41.0 dBm, a saturated drain efficiency (DE) of 53.7%- 59.4%, and a DE of 34.0%-43.8% at 8-dB OBO. Under a 100 MHz orthogonal frequency division multiplexing (OFDM) signal, the CM-ADPA also demonstrates good linearity and efficiency.

合写作者:Renlong Han,Falin Liu

第一作者:Jingyuan Zhang

论文类型:期刊论文

通讯作者:Xu Yan,Yongxin Guo

论文编号:10.1109/TCSII.2024.3434572

学科门类:工学

文献类型:J

卷号:online

期号:online

页面范围:1-5

是否译文:

发表时间:2024-07-30

收录刊物:SCI