文中介绍了驱动延时组件在雷达中的工作原理,进行延时组件的宽带、小型化和高精度设计。基于低温共烧陶瓷与微波多层板层叠的结构,将延时与驱动电路集成设计。 利用宽带幅度均衡技术、宽带幅相精度调节技术进行高精度延时设计。最终实现了宽带小型化高精度驱动延时组件的研制。根据实测结果,在3 GHz~6 GHz频率范围内幅度带内平坦度优于±0.4 dB,延时相位精度≤±5°,延时幅度精度≤±0.5 dB。

In this paper, the working principle of drive time-delay module in radar system is introduced. Wideband, miniaturization and high accuracy design of time-delay modules is given. The cooperation of microwave multilayer printed circuits board and low temperature co-fired ceramic is adopted to implement integration design of true time-delay and drive circuit. On a basis of wideband amplitude equalized technique and wideband amplitude/phase accuracy fine-tuning methods, high accuracy time-delay is warranted. Consequently, a wideband miniaturized high accuracy drive time-delay module is designed. According to the measured results, at the frequency band of 3 GHz~6 GHz, amplitude fluctuation is better than ±0.4 dB, time-delay phase accuracy is within ±5°, and time-delay amplitude accuracy is within ±0.5 dB.

TN958