CIRCUITS AND METHODS FOR COMBINING SIGNAL POWER
First Claim
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1. An apparatus comprising:
- a plurality of power amplifiers, each power amplifier having an input and an output;
a plurality of first transmission lines, wherein the output of each of the plurality of power amplifiers is electrically coupled to a different one or more of the first transmission lines;
a central conductive region, the central conductive region having a node coupled to an antenna terminal; and
a plurality of second transmission lines, wherein each of the second transmission lines is coupled to a different output of the plurality of power amplifiers through respective first transmission lines, wherein each of the second transmission lines includes an end electrically coupled to the central conductive region,wherein each power amplifier receives an input signal and produces an output signal, and wherein the output signals of the plurality of power amplifiers are magnetically coupled from the first transmission lines to the second transmission lines and added at the node of the central conductive region.
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Abstract
The present disclosure includes techniques for combining signal power. In one embodiment, a plurality of power amplifiers generate amplified signals. A plurality of first transmission lines are electrically coupled outputs of the power amplifiers. Second transmission lines are magnetically coupled to the first transmission lines to receive the amplified signals. The amplified signals propagate down the second transmission lines to a central conductive region to a node. The amplified signals are added at the node. The node is coupled to an antenna terminal.
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Citations
20 Claims
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1. An apparatus comprising:
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a plurality of power amplifiers, each power amplifier having an input and an output; a plurality of first transmission lines, wherein the output of each of the plurality of power amplifiers is electrically coupled to a different one or more of the first transmission lines; a central conductive region, the central conductive region having a node coupled to an antenna terminal; and a plurality of second transmission lines, wherein each of the second transmission lines is coupled to a different output of the plurality of power amplifiers through respective first transmission lines, wherein each of the second transmission lines includes an end electrically coupled to the central conductive region, wherein each power amplifier receives an input signal and produces an output signal, and wherein the output signals of the plurality of power amplifiers are magnetically coupled from the first transmission lines to the second transmission lines and added at the node of the central conductive region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A wireless system comprising:
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an antenna; a plurality of power amplifiers, each power amplifier having an input and an output; a plurality of first transmission lines, wherein the output of each of the plurality of power amplifiers is electrically coupled to a different one or more of the first transmission lines; a central conductive region, the central conductive region having a node coupled to an antenna terminal, wherein the antenna terminal is coupled to the antenna; and a plurality of second transmission lines, wherein each of the second transmission lines is coupled to a different output of the plurality of power amplifiers through respective first transmission lines, wherein each of the second transmission lines includes an end electrically coupled to the central conductive region, wherein each power amplifier receives an input signal and produces an output signal, and wherein the output signals of the plurality of power amplifiers are magnetically coupled from the first transmission lines to the second transmission lines and added at the node of the central conductive region.
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12. A method comprising:
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amplifying power of a signal in a plurality of power amplifiers to produce a plurality of amplified signals; electrically coupling the amplified signals to a plurality of first transmission lines, wherein the plurality of amplified signals are electrically coupled to a different one or more of the first transmission lines; magnetically coupling the amplified signals from the plurality of first transmission lines to a plurality of second transmission lines, wherein each of the second transmission lines receives an amplified signal through respective first transmission lines; electrically coupling the amplified signals from each of the second transmission lines to a central conductive region to produce an added amplified signal; and electrically coupling the added amplified signal to an antenna terminal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification