为了满足系统对发射机小型化的需求,设计了一种Ka频段功率合成放大器,采用波导空间功率合成结合电路功率合成的方式,有效地提高了功率合成放大器的功率密度。吸收传统威尔金森电桥的优点,设计了一种低损耗毫米波微带集成3 d B电桥,其成...为了满足系统对发射机小型化的需求,设计了一种Ka频段功率合成放大器,采用波导空间功率合成结合电路功率合成的方式,有效地提高了功率合成放大器的功率密度。吸收传统威尔金森电桥的优点,设计了一种低损耗毫米波微带集成3 d B电桥,其成本低,加工容易,在26~32 GHz插入损耗小于0.3 d B。提出了一种新型的魔T功率合成结构,既保持了较好的3 d B功率分配又提高了两输出支路的隔离度。以此2种3 d B电桥为基础的Ka频段功率合成网络,可提高功率合成放大器工作的稳定性。展开更多
With the advent of 5G and future trends for communication systems moving to millimeter wave(MMW)and higher frequencies,antennas will be required to have high gain,wide bandwidth,and low losses.3D printing realizes str...With the advent of 5G and future trends for communication systems moving to millimeter wave(MMW)and higher frequencies,antennas will be required to have high gain,wide bandwidth,and low losses.3D printing realizes structures by sequential stacking layer-by-layer,which enables the manufacturing of antennas with ar-bitrary shapes in a cheaper,faster,and flexible manner.This study provides a review of current state-of-the-art 3D printed antennas for different frequencies.First,an overview of 3D printing technology is presented.A huge number of 3D printed antennas,categorized by their material composition,have been described,including poly-mer,metallic,ceramic,composite material,and multi-material integrated antennas.Finally,the main challenges and prospects are discussed to provide insight into how 3D printing can be further progressed in antenna manu-facturing.展开更多
文摘为了满足系统对发射机小型化的需求,设计了一种Ka频段功率合成放大器,采用波导空间功率合成结合电路功率合成的方式,有效地提高了功率合成放大器的功率密度。吸收传统威尔金森电桥的优点,设计了一种低损耗毫米波微带集成3 d B电桥,其成本低,加工容易,在26~32 GHz插入损耗小于0.3 d B。提出了一种新型的魔T功率合成结构,既保持了较好的3 d B功率分配又提高了两输出支路的隔离度。以此2种3 d B电桥为基础的Ka频段功率合成网络,可提高功率合成放大器工作的稳定性。
基金supported by National Natural Science Foundation of China(Grant.No.52275310).
文摘With the advent of 5G and future trends for communication systems moving to millimeter wave(MMW)and higher frequencies,antennas will be required to have high gain,wide bandwidth,and low losses.3D printing realizes structures by sequential stacking layer-by-layer,which enables the manufacturing of antennas with ar-bitrary shapes in a cheaper,faster,and flexible manner.This study provides a review of current state-of-the-art 3D printed antennas for different frequencies.First,an overview of 3D printing technology is presented.A huge number of 3D printed antennas,categorized by their material composition,have been described,including poly-mer,metallic,ceramic,composite material,and multi-material integrated antennas.Finally,the main challenges and prospects are discussed to provide insight into how 3D printing can be further progressed in antenna manu-facturing.
