In this paper,a linear optimization method(LOM)for the design of terahertz circuits is presented,aimed at enhancing the simulation efficacy and reducing the time of the circuit design workflow.This method enables the ...In this paper,a linear optimization method(LOM)for the design of terahertz circuits is presented,aimed at enhancing the simulation efficacy and reducing the time of the circuit design workflow.This method enables the rapid determination of optimal embedding impedance for diodes across a specific bandwidth to achieve maximum efficiency through harmonic balance simulations.By optimizing the linear matching circuit with the optimal embedding impedance,the method effectively segregates the simulation of the linear segments from the nonlinear segments in the frequency multiplier circuit,substantially improving the speed of simulations.The design of on-chip linear matching circuits adopts a modular circuit design strategy,incorporating fixed load resistors to simplify the matching challenge.Utilizing this approach,a 340 GHz frequency doubler was developed and measured.The results demonstrate that,across a bandwidth of 330 GHz to 342 GHz,the efficiency of the doubler remains above 10%,with an input power ranging from 98 mW to 141mW and an output power exceeding 13 mW.Notably,at an input power of 141 mW,a peak output power of 21.8 mW was achieved at 334 GHz,corresponding to an efficiency of 15.8%.展开更多
研制了一种基于肖特基变容二极管的0.17 THz二倍频器,该器件为0.34 THz无线通信系统收发前端提供了低相噪、低杂散的本振信号。倍频器结构基于波导腔体石英基片微带电路实现,其核心器件是多结正向并联的肖特基变容二极管。文中采用结参...研制了一种基于肖特基变容二极管的0.17 THz二倍频器,该器件为0.34 THz无线通信系统收发前端提供了低相噪、低杂散的本振信号。倍频器结构基于波导腔体石英基片微带电路实现,其核心器件是多结正向并联的肖特基变容二极管。文中采用结参数模型和三维电磁模型相结合的方式对二极管进行建模,通过两种电路匹配方式实现了0.17 THz二倍频器的最优化设计,最终完成器件的加工及测试。测试结果表明,在输入80~86 GHz,20 d Bm的驱动信号下,倍频器的最大输出功率达12.21 m W,倍频效率11%,输出频点为163 GHz;当前端输入功率达到饱和状态时,该频点输出功率可达21.41 m W。展开更多
基金Supported by the Beijing Municipal Science&Technology Commission(Z211100004421012),the Key Reaserch and Development Pro⁃gram of China(2022YFF0605902)。
文摘In this paper,a linear optimization method(LOM)for the design of terahertz circuits is presented,aimed at enhancing the simulation efficacy and reducing the time of the circuit design workflow.This method enables the rapid determination of optimal embedding impedance for diodes across a specific bandwidth to achieve maximum efficiency through harmonic balance simulations.By optimizing the linear matching circuit with the optimal embedding impedance,the method effectively segregates the simulation of the linear segments from the nonlinear segments in the frequency multiplier circuit,substantially improving the speed of simulations.The design of on-chip linear matching circuits adopts a modular circuit design strategy,incorporating fixed load resistors to simplify the matching challenge.Utilizing this approach,a 340 GHz frequency doubler was developed and measured.The results demonstrate that,across a bandwidth of 330 GHz to 342 GHz,the efficiency of the doubler remains above 10%,with an input power ranging from 98 mW to 141mW and an output power exceeding 13 mW.Notably,at an input power of 141 mW,a peak output power of 21.8 mW was achieved at 334 GHz,corresponding to an efficiency of 15.8%.
文摘研制了一种基于肖特基变容二极管的0.17 THz二倍频器,该器件为0.34 THz无线通信系统收发前端提供了低相噪、低杂散的本振信号。倍频器结构基于波导腔体石英基片微带电路实现,其核心器件是多结正向并联的肖特基变容二极管。文中采用结参数模型和三维电磁模型相结合的方式对二极管进行建模,通过两种电路匹配方式实现了0.17 THz二倍频器的最优化设计,最终完成器件的加工及测试。测试结果表明,在输入80~86 GHz,20 d Bm的驱动信号下,倍频器的最大输出功率达12.21 m W,倍频效率11%,输出频点为163 GHz;当前端输入功率达到饱和状态时,该频点输出功率可达21.41 m W。
