Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2005-08-09
2005-08-09
Takaoka, Dean (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S185000
Reexamination Certificate
active
06927648
ABSTRACT:
Four frequency components (f1to f4) (where, f1<f2<f3<f4) are input into a port (10) of a first demultiplexing filter circuit (1), and demultiplexed into low frequency components (f1and f2) and high frequency components (f3and f4), and input in a port (20) of a second demultiplexing filter circuit (2) and a port (30) of a third demultiplexing filter circuit (3), respectively. The frequency components (f1and f2) are demultiplexed into the component (f1) and the component (f2) by the second demultiplexing filter circuit (2), and output from a port (23) and a port (24), respectively. The frequency components (f3and f4) are demultiplexed into the component (f3) and the component (f4) by the third demultiplexing filter circuit (3), and output from a port (33) and a port (34), respectively. The first demultiplexing filter circuit (1) comprises a low-pass filter (11) and a high-pass filter (12), the second demultiplexing filter circuit (2) comprises a low-pass filter (21) and a combined filter (22) of a combination of a low-pass filter and a band elimination filter, and the third demultiplexing filter circuit (3) comprises a combined filter (31) of a combination of a high-pass filter and a band elimination filter and a high-pass filter (32). These demultiplexing filter circuits are formed of a stacked structure.
REFERENCES:
patent: 5021756 (1991-06-01), Tajima et al.
patent: 2003/0125001 (2003-07-01), Kushihi
patent: 58-138415 (1983-09-01), None
patent: 6-90128 (1994-03-01), None
patent: 6-188622 (1994-07-01), None
patent: 10-98348 (1998-04-01), None
patent: 10-117117 (1998-05-01), None
patent: 10-200442 (1998-07-01), None
patent: 11-31905 (1999-02-01), None
patent: 11-168303 (1999-06-01), None
Fukuda Koichi
Furuya Yoshiko
Ichikawa Hiroshi
Iwashita Kazuki
Oyama Ryuji
Santucci Ronald R.
Takaoka Dean
UBE Industries Ltd.
LandOfFree
Multiplexer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiplexer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiplexer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3523435