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专利名称：Ring filter wideband band pass filter using
therewith
发明人：Kiyomichi Araki,Hitoshi Ishida,Takao
Nakagawa
申请号：US10558058申请日：20040220公开号：US07443271B2公开日：20081028
专利附图：
摘要：In order to provide a band pass filter for high wavelength which has a wideband,small insertion loss and flat passband and obtains steep attenuation, a plurality of ring
filters, in which, an input terminal of a high-frequency signal is provided to an arbitrarypoint on a line in a microstripline ring resonator having the line with one wavelength atelectrical length, an output terminal is provided to a point positioned at a half
wavelength at electrical length from the input terminal, a open stub of ¼ wavelength atelectrical length (or ½ wavelength short stub) is connected to a point positioned at ¼wavelength at electrical length from the input terminal, are connected by cascadeconnection with attenuation pole frequencies being different.
申请人：Kiyomichi Araki,Hitoshi Ishida,Takao Nakagawa
地址：Tokyo JP,Tokyo JP,Tokyo JP
国籍：JP,JP,JP
代理机构：Ladas & Parry LLP
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