Power amplifier circuit with low degradation in the event of breakdowns
First Claim
1. A power amplifier apparatus, comprising:
- N input terminals and N output terminals;
an input matrix connected to N input terminals;
N amplification channels connected to the input matrix, wherein each amplification channel includes at least one cell, each cell comprising;
an input coupler connected to the input matrix,two amplifiers connected to the input coupler,signal switches connected to the outputs of the amplifiers, andan output coupler connected to the outputs of the signal switches; and
an output matrix, connected to the output coupler of each cell, connected to N output terminals.
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Abstract
The invention relates to a configuration of power amplifiers comprising firstly N inputs and N outputs, and secondly N amplification channels. The configuration is such that all of the amplification channels have substantially the same power even if the input signals are of different powers. Each amplification channel has at least one cell comprising two preferably identical amplifiers connected to first and second ports of a coupler having a third port constituting the output of the cell. An input coupler is preferably also provided having one port that constitutes the input of the cell and two other ports respectively connected to the inputs of the amplifiers. Each cell includes means for recombining the signals on the ports of the output coupler in such a manner as to maximize the output power in the event of one of the amplifiers breaking down.
9 Citations
12 Claims
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1. A power amplifier apparatus, comprising:
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N input terminals and N output terminals; an input matrix connected to N input terminals; N amplification channels connected to the input matrix, wherein each amplification channel includes at least one cell, each cell comprising; an input coupler connected to the input matrix, two amplifiers connected to the input coupler, signal switches connected to the outputs of the amplifiers, and an output coupler connected to the outputs of the signal switches; and an output matrix, connected to the output coupler of each cell, connected to N output terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification