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提出了一种新颖的高选择性毫米波带通滤波器及其设计方法.在圆谐振腔的侧壁加入槽型微扰结构,通过调节微扰小槽的角度可以控制滤波器带外传输零点的位置,从而实现了带宽可调、高选择性的双模圆谐振腔带通滤波器.根据该滤波器结构、理论分析和仿真设计基础,研制了在V波段滤波器样品并进行了测试.实验结果与方正吻合得良好.与传统双模圆腔滤波器相比,所提出的滤波器不需要额外的调节结构,其设计方法简单,选择特性高,结构紧凑,具有一定的工程价值用于高性能平面化毫米波滤波器的设计.
A novel high-selectivity millimeter-wave band-pass filter and its design method are proposed.A slot-type perturbation structure is added to the side wall of the circular resonator, and the out-of-band transmission zero point of the filter can be controlled by adjusting the angle of the perturbation small slot The tunable and highly selective dual-mode circular resonator band-pass filter is realized.According to the structure of the filter, theoretical analysis and simulation design basis, a sample of the V-band filter has been developed and tested. The experimental results are in good agreement with those of Founder.Compared with the traditional two-mode circular cavity filter, the proposed filter does not need additional adjustment structure, and its design method is simple, the selection characteristics are high, the structure is compact, and has certain engineering value for Design of High Performance Planar Millimeter Wave Filter.