| 摘要 |
A self balancing matrix amplifier is provided in which a plurality of input signals are divided with an input transform matrix, amplified by a number of amplifiers, and recombined with an output transform matrix to form amplified versions of the input signals. One of the inputs is set aside as a monitor input, and this is connected to the characteristic impedance of the system. The output corresponding to this input is monitored for gain imbalances which should be zero if the entire matrix amplifier is perfectly balanced. Then, on the basis of the monitored phase and gain imbalances, attenuators and phase adjusters in series with each of the amplifiers are iteratively controlled so as to insert phase shift or gain/loss so as to reduce the monitored phase and gain imbalances.
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