Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2007-03-09
2009-06-02
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S127000, C333S125000, C333S134000
Reexamination Certificate
active
07541892
ABSTRACT:
According to one exemplary embodiment, a three-way splitter includes a printed element and a resistive network comprising discrete resistors. A first printed branch, second printed branch, and third printed branch distribute a received communication signal to respective outputs having substantially the same phase, frequency, and impedance. Each printed branch includes a number of substantially ninety-degree angles. In one embodiment, the printed branches are quarter wavelength transmission lines in a frequency range of 1.5 GHz. In one embodiment, the three-way splitter consumes less than one square inch of surface area on a printed circuit board, and can be used in a satellite receiving system, for example. In this embodiment, the three-way splitter is utilized for frequencies in the range of approximately 900 MHz to 2.2 GHz.
REFERENCES:
patent: 4556856 (1985-12-01), Presser
patent: 5021755 (1991-06-01), Gustafson
patent: 5079527 (1992-01-01), Goldfarb
patent: 6037845 (2000-03-01), Parker
patent: 6078227 (2000-06-01), Buer et al.
Broadcom Corporation
Farjami & Farjami LLP
Glenn Kimberly E
Pascal Robert
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