Arrangement for combining the output signals from a plurality of transmitters tuned to the same frequency
First Claim
1. An arrangement for combining in phase the output signals from a pair of transmission units tuned to the same frequency, said arrangement including means for minimizing the phase difference of said signals, comprising:
- (a) a sum and difference network electrically connected to the pair of transmission units for producing sum and difference signals from the output signals of the pair of transmission units;
(b) a detector electrically connected to said network for producing from the sum and difference signals a phase control signal representative of any phase difference between said output signals; and
(c) phase control means electrically connected to the detector and to at least one of the transmission units for controlling said phase difference in response to said control signal.
2 Assignments
0 Petitions
Accused Products
Abstract
An arrangement for combining the output signals from a plurality of transmission units (2, 3) tuned to the same frequency and included in the arrangement, while each arrangement is by itself capable of functioning as a transmission unit (2) whose output signal can be combined with that of another transmission unit (3). For each pair of transmission units (2, 3) to be combined the arrangement incorporates control circuitry (5) for generating a control signal used to effect combination of the output signals of the pair of transmission units (2, 3) in phase. The control circuitry (5) includes a sum and difference network (6) connected to the transmission units (2, 3) and a detector (7), for example a phase-sensitive detector, for deriving the control signal from the output signals of the sum and difference network (6), the sign of the control signal being of special importance.
15 Citations
11 Claims
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1. An arrangement for combining in phase the output signals from a pair of transmission units tuned to the same frequency, said arrangement including means for minimizing the phase difference of said signals, comprising:
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(a) a sum and difference network electrically connected to the pair of transmission units for producing sum and difference signals from the output signals of the pair of transmission units; (b) a detector electrically connected to said network for producing from the sum and difference signals a phase control signal representative of any phase difference between said output signals; and (c) phase control means electrically connected to the detector and to at least one of the transmission units for controlling said phase difference in response to said control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification