Triplexer circuit

Details Triplexer circuit Triplexer circuit

2006-05-18

2009-02-24

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S126000, C333S129000

Reexamination Certificate

active

07495528

ABSTRACT:
The present invention provides a triplexer circuit obtaining an impedance matching in each of frequency bands with a simple configuration and separating a signal excellently. Three filters are connected in parallel with each other and, for signals in a pass frequency band of one of the filters, the other two filters form a parallel resonant circuit. In this case, the total impedance of the whole parallel resonant circuit becomes infinite (∞) and the other two filters can be made open to the pass frequency band of the one filter. With the simple configuration in which the three filters are connected in parallel with each other, an impedance matching is obtained in each of the frequency bands, and excellent signal separation can be performed.

REFERENCES:
patent: 7126440 (2006-10-01), Bradley et al.
patent: A 2003-198309 (2003-07-01), None

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