Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1998-03-18
2000-05-30
Pascal, Robert
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333177, 333185, 333202, H01P 1213, H01P 1201
Patent
active
060695412
ABSTRACT:
A high-frequency filter 10 serving as a bandpass filter has three transmission lines SL11 to SL13 side-coupled in three stages. The transmission lines SL11 to SL13 are respectively connected in parallel to capacitors C11 to C13. One end of the input transmission line SL11 is connected to an input terminal Pi through an input capacitor C14. One end of the output transmission line SL13 is connected to an output terminal Po through an output capacitor C15. The other ends of the transmission lines SL11 and SL13 are connected and the connection point is connected to the ground through an inductor Lg for forming a pole in the transmission characteristic of the high-frequency filter. One end of the transmission line SL12 is connected to the ground.
REFERENCES:
patent: 3718874 (1973-02-01), Cooper, Jr.
patent: 4888568 (1989-12-01), Kawaguchi
patent: 5521564 (1996-05-01), Kaneko et al.
patent: 5525942 (1996-06-01), Horii et al.
patent: 5834992 (1998-11-01), Kato et al.
Bando Tomoya
Mandai Harufumi
Tonegawa Ken
Tsuru Teruhisa
Murata Manufacturing Co. Ltd.
Pascal Robert
Summons Barbara
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