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21. 发明授权

US5400002A Strip dual mode filter in which a resonance width of a microwave is adjusted and dual mode multistage filter in which the strip dual mode filters are arranged in series 失效
标题翻译：带状双模式滤波器，其中调节微波的谐振宽度，双模式多级滤波器，其中带状双模滤波器串联布置
公开(公告)号：US5400002A
公开(公告)日：1995-03-21
申请号：US71112
申请日：1993-06-03
申请人： Kazuaki Takahashi , Munenori Fujimura , Hiroyuki Yabuki , Mitsuo Makimoto
发明人： Kazuaki Takahashi , Munenori Fujimura , Hiroyuki Yabuki , Mitsuo Makimoto
IPC分类号： H01P1/203 , H01P7/08
CPC分类号： H01P1/20381 , H01P1/2039 , H01P7/082 , H01P7/084 , H01P7/088
摘要： A strip dual mode filter consists of a strip line ring resonator having an electric length equivalent to a resonance wavelength .lambda..sub.o for resonating microwaves at the resonance wavelength .lambda..sub.o according to a characteristic impedance thereof, an input coupling capacitor for transmitting the microwaves from an input terminal to a coupling point A of the ring resonator, an output coupling capacitor for outputting the microwaves resonated in the ring resonator from a coupling point B of the ring resonator to an output terminal, and a phase-shifting circuit connected to a coupling point C and a coupling point D of the ring resonator for changing the characteristic impedance of the ring resonator by shifting a phase of the microwave by a multiple of a half-wave length of the microwaves. The coupling point B is spaced a quarter-wave length of the microwaves apart from the coupling point A, the coupling point C is spaced the half-wave length of the microwaves apart from the coupling point A, and the coupling point D is spaced the half-wave length of the microwaves apart from the coupling point B.
摘要翻译：带状双模式滤波器由带状线环形谐振器组成，带状线环谐振器具有等于谐振波长λo的电长度，用于根据其特性阻抗谐振波长为λo的微波;输入耦合电容器，用于从输入端发射微波端子连接到环形谐振器的耦合点A，用于将环形谐振器中谐振的微波从环形谐振器的耦合点B输出到输出端子的输出耦合电容器和连接到耦合点C的相移电路以及环形谐振器的耦合点D，用于通过将微波的相位移动微波的半波长的倍数来改变环形谐振器的特性阻抗。耦合点B与耦合点A分开的四分之一波长的微波，耦合点C将微波的半波长与耦合点A分开，耦合点D间隔开除耦合点B之外的微波半波长。

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