Circuit for the selective activation of a plurality of...

Details Circuit for the selective activation of a plurality of... Circuit for the selective activation of a plurality of...

2005-02-01

2005-02-01

Gregory, Bernarr E. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C343S876000

Reexamination Certificate

active

06850189

ABSTRACT:
A circuit for the selective activation of a plurality of antennas (L1to L4) from a common end stage (8) contains a first selector switch (10) at a terminal (6) of the end stage (8), the switch contacts (12, 22) of which are each connected to a switch contact (20, 26) and via an antenna (L1, L2) each to one fixed contact each of a twin selector switch (14, 24). The fixed contacts of the twin selector switch are each connected via a further antenna (L3, L4) to the other terminal (18) of the end stage and these are also connected to the other switch contacts (16, 28) of the twin selector switch.

REFERENCES:
patent: 4123759 (1978-10-01), Hines et al.
patent: 5977929 (1999-11-01), Ryken
patent: 6542119 (2003-04-01), Howell et al.

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