Radio frequency signal combining/sorting apparatus

Details Radio frequency signal combining/sorting apparatus Radio frequency signal combining/sorting apparatus

1992-07-13

1993-07-20

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333134, 3332191, H01P 1213

Patent

active

052297292

ABSTRACT:
A radio frequency signal combining/sorting apparatus which includes a plurality of channel filters which allow band regions of respective transmission channels to pass through them, isolators connected to respective inputs of the channel filters, a plurality of sets of power composing circuits each including branch lines for composing outputs of the channel filters into one output, and hybrid circuits arranged to each compose the outputs per two sets of the power composing circuits. The band regions to be applied to the respective channel filters are selected in such relation that the band regions of the respective channel filters corresponding to a given power composing circuit are spaced from each other to the largest possible extent.

REFERENCES:
patent: 3124768 (1964-03-01), Tilston
patent: 3865990 (1975-02-01), Kuenemund
patent: 4639699 (1987-01-01), Nishikawa et al.
patent: 5015974 (1991-05-01), Komazaki et al.
patent: 5021756 (1991-06-01), Tajima et al.
patent: 5034707 (1991-07-01), Kagstrom
Microwave Journal, vol. 32, No. 6, Jun. 1989, Dedham U.S., pp. 99-112; Levinson and Bennett: "Multiplexing With High Performance Directional Filters", pp. 108-110; Figure 8.
Microwave Journal, vol. 30, No. 11, Nov. 1987, Dedham U.S., pp. 79-86; Levy: "A New Adaptive Filter/IFM Receiver System", the whole document.
39th IEEE Vehicular Technology Conference, vol. I, May 1989, San Francisco, U.S. pp. 353-358; Clark: "Cellular Rural Statistical Area (RSA) Transmit And Combining", p. 355 and Fig. 5.

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