发明名称 |
Strip dual mode filter in which a resonance width of a microwave is adjusted |
摘要 |
A strip dual mode filter includes a strip line ring resonator having a uniform line impedance and an electric length equivalent to a wavelength of a microwave, an input terminal coupled to a point A of the ring resonator, a feed-back circuit connected to points C and D and arranged in a central hollow space of the ring resonator and an output terminal coupled to a point B of the ring resonator. The points A to D are spaced by a quarter-wave length of the microwave in that order. The microwave input to the point A is resonated in the ring resonator in a first mode and is input to the feed-back circuit from the point C. Therefore, a phase of the microwave shifts by a multiple of a half-wave length of the microwave, and the microwave is output to the point D. Thereafter, the microwave is resonated in the ring resonator in a second mode orthogonal to the first mode and is output from the point B to the output terminal. Therefore, the microwave can be resonated and filtered in two orthogonal modes in the strip dual mode filter.
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申请公布号 |
US5659274(A) |
申请公布日期 |
1997.08.19 |
申请号 |
US19950534470 |
申请日期 |
1995.09.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TAKAHASHI, KAZUAKI;FUJIMURA, MUNENORI;YABUKI, HIROYUKI;MAKIMOTO, MITSUO |
分类号 |
H01P1/203;H01P7/08;(IPC1-7):H01P1/203 |
主分类号 |
H01P1/203 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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