Distributed antenna system

Details Distributed antenna system Distributed antenna system

1988-09-29

1990-04-10

Hille, Rolf

Communications: radio wave antennas

Antennas

With coupling network or impedance in the leadin

455606, 455612, H01Q 2100, H04B 900

Patent

active

049164600

ABSTRACT:
The present invention provides a distributed antenna system comprising a primary antenna (14A, 16A) and a plurality of secondary antennas (36, 40), a fibre optic network (20, 22) connected between the primary antenna (14A, 16A) and the secondary antennas (36, 40), first means (16, 44) associated with a first one of the antennas (16A, 40) which transmits signals received by that antenna (16A, 40) into the fibre optic network (20, 22), and second means (32, 50) associated with a second one of the antennas (14A, 36) which causes that antenna (14A, 36) to transmit signals received by the second means (32, 50) from the fibre optic network (20, 22).
Preferably, the use of a heterodyne circuit is avoided and the light signals travelling within the fibre optic networks (20, 22) are modulated at radio frequency.

REFERENCES:
patent: 4456793 (1984-06-01), Baker et al.
patent: 4596051 (1986-06-01), Feldman
patent: 4736463 (1988-04-01), Chavez

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