针对微波射频器件小型化的需求,文中采用ADS与HFSS联合仿真设计的方法,设计并制作了一种宽带小型化带状线一分二Wilkinson功分器。使用带状线结构取代传统的微带线结构,并引入"蛇形布线"和"翻折结构",利用过孔进行...针对微波射频器件小型化的需求,文中采用ADS与HFSS联合仿真设计的方法,设计并制作了一种宽带小型化带状线一分二Wilkinson功分器。使用带状线结构取代传统的微带线结构,并引入"蛇形布线"和"翻折结构",利用过孔进行垂直互连。采用PCB板叠压的形式实现带状线结构和隔离电阻的装配。此结构在很大程度上减小了功分器的物理尺寸,并拥有优良的电性能。测试结果表明,功分器在1～3 GHz的工作频带内,插入损耗<0. 7 d B,隔离度>18 d B,驻波在1. 4以下。展开更多
Purpose The superfast kickers are required for the HEPS storage ring on-axis injection system due to its very small dynamic aperture.A 750-mm-long stripline pair type of kicker prototype was researched and developed t...Purpose The superfast kickers are required for the HEPS storage ring on-axis injection system due to its very small dynamic aperture.A 750-mm-long stripline pair type of kicker prototype was researched and developed to demonstrate achieved performance of bandwidth,impedance,kicker strength,field uniformity and beam power loss.Methods The cross sections of the kicker main body and the end of taper part are optimized for a good impedance matching and field uniformity.3D simulation further optimizes the taper part to minimize the beam power loss and maintain a lower reflection.The high-voltage feedthrough is also designed and optimized by 3D CST.RF and high-voltage measurements are taken to verify the design of kicker assembly.Results The testing transmission odd-mode impedance is 50±0.5Ω,the even-mode impedance is 60±0.5Ω,and return loss is less than−13 dB.The peak voltage and the rise time of pulse width inserting kicker assembly just decrease 3%of 20 kV and slow down 80 ps,respectively.Conclusions RF testing results agree well with the simulation ones,which meet the design specification.The kicker assembly works well at±20 kV pulse.展开更多
文摘针对微波射频器件小型化的需求,文中采用ADS与HFSS联合仿真设计的方法,设计并制作了一种宽带小型化带状线一分二Wilkinson功分器。使用带状线结构取代传统的微带线结构,并引入"蛇形布线"和"翻折结构",利用过孔进行垂直互连。采用PCB板叠压的形式实现带状线结构和隔离电阻的装配。此结构在很大程度上减小了功分器的物理尺寸,并拥有优良的电性能。测试结果表明,功分器在1～3 GHz的工作频带内,插入损耗<0. 7 d B,隔离度>18 d B,驻波在1. 4以下。
基金Funding was provided by National Natural Science Founda-tion of China(Grant Nos.11475200 and 11675194).
文摘Purpose The superfast kickers are required for the HEPS storage ring on-axis injection system due to its very small dynamic aperture.A 750-mm-long stripline pair type of kicker prototype was researched and developed to demonstrate achieved performance of bandwidth,impedance,kicker strength,field uniformity and beam power loss.Methods The cross sections of the kicker main body and the end of taper part are optimized for a good impedance matching and field uniformity.3D simulation further optimizes the taper part to minimize the beam power loss and maintain a lower reflection.The high-voltage feedthrough is also designed and optimized by 3D CST.RF and high-voltage measurements are taken to verify the design of kicker assembly.Results The testing transmission odd-mode impedance is 50±0.5Ω,the even-mode impedance is 60±0.5Ω,and return loss is less than−13 dB.The peak voltage and the rise time of pulse width inserting kicker assembly just decrease 3%of 20 kV and slow down 80 ps,respectively.Conclusions RF testing results agree well with the simulation ones,which meet the design specification.The kicker assembly works well at±20 kV pulse.
