在移相器的应用中,具有滤波性能的移相器可以用于选择接收频率的信号,并且在相移带宽内实现稳定的移相值。基于传输线型超宽带移相器的结构,利用滤波型移相值原理和相移斜率闭公式对滤波型超宽带移相器进行设计、电路仿真、电磁仿真以及加工测试。设计的滤波型超宽带移相器实测中心频率为6.85 GHz,可以实现22.5°（相移带宽66.4%）、45°（相移带宽103.7%）和90°（相移带宽93%）。结果表明,滤波型超宽带移相器加工结果与仿真结果基本吻合,实现了超宽带、滤波性能和简单结构的特性,有较好的应用价值。
Abstract
In the application of phase shifters, phase shifters with filtering characteristics can be employed to select signals at the receiving frequency and achieve stable phase shift values within the phase shift bandwidth. This paper is based on the structure of a transmission line ultra-wideband (UWB) phase shifter and utilizes the principles of filtering phase shift values and the closed-form expression for the phase shift slope to design, simulate (both circuit and electromagnetic), and test a filtering-type UWB phase shifter. The measured center frequency of the designed filtering-type UWB phase shifter is 6.85 GHz, capable of achieving phase shifts of 22.5° (with a phase shift bandwidth of 66.4%), 45° (with a phase shift bandwidth of 103.7%), and 90° (with a phase shift bandwidth of 93%). The results demonstrate that the fabricated filtering-type UWB phase shifter closely aligns with the simulation outcomes, exhibiting characteristics of ultra-wideband performance, filtering capability, and a simple structure, indicating its potential for practical applications.
关键词
超宽带 /
移相器 /
滤波器 /
小型化 /
短路短枝节
Key words
ultra-wideband /
phase shifter /
filter /
miniaturization /
short circuits and short branches
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