Comb-line wireless filter

Details Comb-line wireless filter Comb-line wireless filter

2005-08-05

2008-10-28

Phu, Sanh D (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S213000, C455S286000, C455S299000, C455S306000, C333S202000, C333S203000, C333S204000, C333S205000

Reexamination Certificate

active

07444129

ABSTRACT:
A comb-line wireless filter (5) includes an input end (505a), an output end (505b), a first transmission line (501b), a second and third transmission line (501a,501c) each having a curved shape, and a first, second, and third capacitor (503b,503a,503c). The first transmission line has a first transmission line part and a second transmission line part. The second transmission line and the third transmission line are separately on the two sides of the first transmission line part of the first transmission line. The input end and the output end are separately connected to first ends of the second transmission line and the third transmission line. The capacitors are separately connected to first ends of the transmission lines. According to the curved shape of the second transmission line and the third transmission line, the size of the comb-line wireless filter is significantly reduced.

REFERENCES:
patent: 5888942 (1999-03-01), Matthaei
patent: 6020799 (2000-02-01), Ishizaki et al.
patent: 6208226 (2001-03-01), Chen et al.
patent: 6240144 (2001-05-01), Ha
patent: 6653912 (2003-11-01), Robinson et al.
patent: 7256666 (2007-08-01), Uchida et al.
patent: 2003/0222732 (2003-12-01), Matthaei
patent: 1317847 (2001-10-01), None

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