Patent ID: 7372345
Filing Date: 2008-05-13
Classification: H03K

Abstract:
1. A circuit comprising: at least two signal sources; a signal output; a control unit, connected to each of said signal sources, that emits a control signal to selectively activate or deactivate the respective signal sources; each signal source having a corresponding blocking unit electrically connected thereto, each blocking unit also being connected to said control unit and being switchable between a blocking state, which blocks a connection between the corresponding signal source to which the blocking unit is connected and said signal output, and an enabling state that enables said connection between said corresponding signal source to which the blocking unit is connected and said signal output, each blocking unit being switched to said enabling state by said control signal when the corresponding signal source to which the blocking unit is connected is activated by said control signal; a primary electrical line connected to said signal output; and a plurality of stub lines via which the respective signal sources are connected to said primary line, with a first of said at least two signal sources being connected to said primary line with a first of said plurality of stub lines, a second of said signal sources being connected to said primary line with a second of said plurality of stub lines, said first of said stub lines being connected to said primary line at a first connection point and said second of said stub lines being connected to said primary line at a second connection point, and the blocking unit connected to the second of said at least two signal sources comprising at least one blocking element connected between said first connection point and said second connection point.