Optimization of error loops in distributed power amplifiers
First Claim
Patent Images
1. An apparatus comprising:
- a main amplifier within a carrier null loop and configured to receive an RF input signal;
an error amplifier within an error loop;
a switch disposed in the carrier null loop and configured to selectively disable the carrier null loop to provide injection of an actual RF signal amplified by the main amplifier into the error loop to allow optimization of the error loop using the actual RF signal, wherein the switch inhibits reception of the RF input signal by the error amplifier when the carrier null loop is disabled.
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Abstract
Several feed-forward RF power amplifiers configured for use in a distributed array, each having a main amplifier within a carrier null loop and an error amplifier within an error loop. Each carrier null loop includes a switch configured to selectively disable the carrier null loop, thereby disabling the carrier null loop, and injecting an actual RF signal into the error loop allowing the error loop to be optimized using the actual RF signal.
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Citations
22 Claims
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1. An apparatus comprising:
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a main amplifier within a carrier null loop and configured to receive an RF input signal; an error amplifier within an error loop; a switch disposed in the carrier null loop and configured to selectively disable the carrier null loop to provide injection of an actual RF signal amplified by the main amplifier into the error loop to allow optimization of the error loop using the actual RF signal, wherein the switch inhibits reception of the RF input signal by the error amplifier when the carrier null loop is disabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. An apparatus comprising:
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a main amplifier within a carrier null loop; an error amplifier within an error loop; a switch disposed in the carrier null loop and configured to selectively disable the carrier null loop to provide injection of an actual RF signal amplified by the main amplifier into the error loop to allow optimization of the error loop using the actual RF signal; a processor, the switch controlled by the processor; an attenuator, the attenuator configured to reduce the level of the actual RF signal injected into the error loop, the attenuator also controlled by the processor.
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12. An amplifier system, the system comprising:
an array of amplifiers, with each such amplifier comprising; a main amplifier within a carrier null loop; an error amplifier within an error loop; a switch disposed in the carrier null loop and configured to selectively disable the carrier null loop to provide injection of an actual RF signal amplified by the main amplifier into the error loop to allow optimization of the error loop using the actual RF signal and while the carrier null loop in at least one other amplifier in the array is enabled. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
Specification