Radio relay channel branch cascade exhibiting uniform transit-ti

Details Radio relay channel branch cascade exhibiting uniform transit-ti Radio relay channel branch cascade exhibiting uniform transit-ti

1977-06-24

1979-07-17

Griffin, Robert L.

325 3, H04B 714

Patent

active

041616944

ABSTRACT:
A multi-channel radio relay system in which a plurality of high-frequency channels are provided in a link between a transmitting station and a receiving station, said channels being combined to form a high-frequency group, and separated at the receiving end, utilizing therefor, at each station, a cascade circuit of channel branch elements, which comprise circulators and band-pass filters, in which one of the two edge channels located at the respective upper and lower edges of the frequency band to be transmitted, at the transmitting end, is assigned to the channel branch element furthest from the antenna terminal thereat, and the other of such two edge channels, at the receiving end, is assigned to the channel branch element furthest from the antenna terminal thereat, with the band-pass filters of the respective channel elements for the two edge channels being detuned, with respect to their middle frequencies, relative to the middle frequency of their assigned edge channels, by an amount .DELTA. f, in the direction of the middle frequency of the respective channel adjacent in frequency position.

REFERENCES:
patent: 3273064 (1966-09-01), Kunemund
patent: 3411088 (1968-11-01), Hutchison
patent: 3636452 (1972-01-01), Nuding
patent: 3742149 (1973-06-01), Yoshida et al.
patent: 3865990 (1975-02-01), Kuenemund
patent: 3974448 (1976-08-01), Baum

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