摘要
针对现代无线通信系统日趋高性能的需求,设计了一种基于开关电容功率放大器(Switched Capacitor Power Amplifier, SCPA)的圆极化有源集成发射天线。在有源集成发射天线中,天线不仅为开关电容功率放大器提供最佳负载阻抗,同时还对键合线引入的寄生电感进行补偿,进而减小了电路损耗,实现了紧凑的一体化设计。得益于天线提供的最佳负载阻抗,开关电容功率放大器芯片去除了输出匹配网络。芯片采用极性和正交复用的设计,在保持系统紧凑性的同时支持了更复杂的调制方式。平面缝隙天线在环形槽结构中引入一段细长枝节,使得环形槽结构的基膜分解为两个正交的简并谐振模,在同一频段中同时实现了右旋圆极化和左旋圆极化。实验结果表明,所设计的开关电容功率放大器频率为1.92 GHz,最大输出功率为10.25 d Bm,有源集成天线在工作频率上的等效各向同性辐射功率(Equivalent Isotropic Radiated Power, EIRP)达到12.5 d Bm。
A circularly polarized active integrated transmitter antenna based on a switched capacitor power amplifier(SCPA)is designed to meet the increasing demand for high performance in modern wireless communication systems.In the active integrated transmitter antenna,the antenna not only provides the optimal load impedance for the SCPA,but also compensates for the parasitic inductance introduced by the bonding wires,reducing circuit losses and achieving a compact and integrated designing result.Due to the optimal load impedance provided by the antenna,the SCPA die removes the output matching network,and the die is designed with polar and quadrature multiplexing to support more complex modulation while maintaining system compactness.The planar slot antenna introduces a section of elongated stub in the annular slot structure so that the base mode of the annular slot structure is decomposed into two orthogonal degenerate resonant modes,and both right-hand circular polarization and left-hand circular polarization are achieved in the same frequency band.The experimental results show that the designed SCPA operates at 1.92 GHz with a maximum output power of 10.25 dBm.The equivalent isotropic radiated power(EIRP)of the active integrated antenna at the operating frequency reaches 12.5 dBm.
作者
官伟恒
潘振明
陈思宇
李咏诗
杜志侠
郭春炳
Guan Wei-heng;Pan Zhen-ming;Chen Si-yu;Li Yong-shi;Du Zhi-xia;Guo Chun-bing(School of Integrated Circuits,Guangdong University of Technology,Guangzhou 510006,China;School of Physics and Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006,China)
出处
《广东工业大学学报》
CAS
2024年第6期33-38,共6页
Journal of Guangdong University of Technology
基金
国家自然科学基金青年基金资助项目(62101139)
广东省自然科学基金资助项目面上项目(2023A1515012831)。
关键词
有源集成天线
开关电容功率放大器
圆极化
active integrated antenna
switched capacitor power amplifier
circular polarization
