论文部分内容阅读
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 dBm的驱动信号下,倍频器的最大输出功率达12.21 mW,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 mW。“,”A 0.17 THz Schottky varactors frequency doubler for 0.34 THz wireless communication system was presented in this paper, which can supply the low phase noise and low spurions of local oscillator (LO) signal. The doubler was based on quartz microstrip circuit integrated in waveguide cavity and with the Schottky varactor diodes constituting anti- parallel pairs as the key part. The modeling and simulation for the diodes were accomplished by combining the knot parameter model with three- dimensional electromagnetic model. Two ways were found to achieve a matching circuit for the optimal doubler design and a 0.17 THz doubler was fabricated and tested according to these simulating results. The test results indicate that, at the 80- 86 GHz driving frequency and 20 dBm driving power , the maximum output power of the doubler is 12.21 mW with the efficiency up to 11% at 163 GHz, and it can reach to 21.41 mW while the input power at the saturation terminal.