Device for the coupling to a common antenna of at least two tran

Details Device for the coupling to a common antenna of at least two tran Device for the coupling to a common antenna of at least two tran

1991-02-26

1993-05-18

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 83, 455280, 343858, H04B 148, H04B 118

Patent

active

052128130

ABSTRACT:
This device is intended for the coupling to a same antenna of at least two devices for transmitting and/or receiving microwave frequency signals operating in a same frequency range but having separated working bands. It is constituted by a circuit (M) comprising four passive filters (F.sub.1 -F.sub.4) and two circulators (C.sub.1, C.sub.2) defining four channels for respectively coupling each of the transmitters (E.sub.A, E.sub.B) and receivers (R.sub.A, R.sub.B) of the two devices (A, B) to the antenna. Each circulator (C.sub.1 ; C.sub.2) is connected by the intermediary of a filter to the transmitter of one of the devices and to the receiver of the other device in order to couple them to the antenna, while isolating them from each other. The invention has an application for coupling transmitting and/or receiving devices installed in aircrafts.

REFERENCES:
patent: 3636452 (1972-01-01), Nuding
patent: 3725942 (1973-04-01), Ulkmar
patent: 3742506 (1973-06-01), Wikinson
patent: 4211894 (1980-07-01), Watanabe et al.
patent: 4449128 (1984-05-01), Weir
patent: 5023866 (1991-06-01), DeMuro

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