Circuit for the selective activation of a plurality of antennas from a common end stage
AssigneeSiemens Aktiengesellschaft
InventorsJohannes Ilq, Franz Waltl
Life of this patent
Estimating the term…
Abstract
A circuit for the selective activation of a plurality of antennas (L1 to 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.
Claims15
Circuit for the selective activation of a plurality of antennas from a common end stage, comprising:
- a first selector switch at one terminal of the end stage, the fixed contact of which can be optionally connected to one of two switch contacts,
- a second selector switch with a fixed contact, which is connected via a first antenna to a first switch contact of the first selector switch, a first switch contact which is connected to the other terminal of the end stage, and a second switch contact, which is connected to the first switch contact of the first selector switch,
- a third selector switch, which can be switched simultaneously with the second selector switch, with a fixed contact which is connected via a second antenna to a second switch contact of the first selector switch, a first switch contact, which is connected to the other terminal of the end stage, and a second switch contact, which is connected to the second switch contact of the first selector switch, and a further antenna each, which is connected to the fixed contact of the second selector switch or of the third selector switch and of the other terminal of the end stage.
Circuit for the selective activation of a plurality of antennas from a common end stage, comprising:
- a first selector switch for selectively coupling one terminal of the end stage with one of two switch contacts,
- a second selector switch for selectively coupling a first or a second antenna with the first switch contact of the first selector switch,
- a third selector switch, which can be switched simultaneously with the second selector switch, for selectively coupling a third or fourth antenna with the second switch contact of the first selector switch.
Dependencies are inferred from the claim text.