PIN电调衰减器可分匹配型和反射型二种.常用的是匹配型衰减器;而反射型衰减器一般要配有隔离元件才能使用,所以实用价值较小.有关毫米波段PIN电调衰减器,迄今虽未见有产品报道;但实验型毫米波段的PIN电调衰减器已有报道,其结构均是采用鳍线插入单脊或双脊波导中.对毫米波段匹配型PIN衰减器,文献[1]作了尝试;采用了双向鳍线结构,将衰减管与匹配管分别接于鳍线的两面;这种结构的衰减器,其缺点是衰减量受到限制.这是由于微波能量不可能集中到双向鳍线的一个侧面的衰减管上.文献[1]所报导的典型结果是:工作频带为28—40千兆赫,零偏插损 PIN electric attenuator can be divided into two types of matching and reflection. Commonly used is matched attenuator; and reflective attenuator is generally equipped with isolation components to use, so the practical value of small. PIN millimeter-wave attenuation Although there is no product report hitherto, experimental pin millimeter-wave PIN attenuators have been reported and their structures are inserted into single or double-ridged waveguides using fin lines.With the matched millimeter-band PIN attenuator, An attempt was made in the literature [1], which adopted a bidirectional fin structure to attach the attenuating tube and the matching tube to both sides of the fin line, respectively. The disadvantage of this attenuator is that the attenuation is limited, because the microwave energy is not May concentrate on one side of the attenuating tube of the bidirectional fin wire.The typical result reported in [1] is that the operating band is 28-40 GHz with zero offset insertion loss