Method of and apparatus for signal amplification
AssigneeRockwell Collins, Inc.
InventorWilliam B. Sorsby
Life of this patent
Estimating the term…
Abstract
A system for and method of amplifying a modulated input signal can include separating the input signal into a first amplitude component signal and a first amplitude composite signal (e.g., an amplitude only component signal). The method further includes subtracting the first amplitude composite signal from the input signal to provide a difference signal. The method also includes amplifying the difference signal asymmetrically with respect to the first amplitude composite signal. The method can also include adding the difference signal and the first amplitude composite signal after asymmetric amplification. The power amplifier supply voltage can be powered as a function of the first amplitude component signal. The mathematical operations can be performed in the digital domain.
Claims23
A system, comprising:
- a first summer for subtracting a residual signal of an input signal from the input signal;
- a second summer for adding a first amplified signal from the first summer and a second amplified signal, the second amplified signal being related to the residual signal, wherein the first amplified signal is amplified with a first gain and the second amplified signal is amplified with a second gain, the first gain being different from the first gain;
- and
- a power amplifier configured to receive a first sum signal from the second summer, wherein the power amplifier includes a power input receiving a large amplitude component signal related to a separation of the input signal and the residual signal.
A system, comprising:
- a first summer for subtracting a residual signal of an input signal from the input signal;
- a second summer for adding a first amplified signal from the first summer and a second amplified signal, the second amplified signal being related to the residual signal, wherein the first amplified signal is amplified with a first gain and the second amplified signal is amplified with a second gain, the first gain being different from the first gain;
- and
- a power amplifier configured to receive a first sum signal from the second summer, wherein the power amplifier includes a power terminal receiving a large amplitude only component signal related to a separation of the input signal and the residual signal.
A system, comprising:
- a first summer circuit for subtracting a residual signal of an input signal from the input signal;
- a second summer circuit for adding a first amplified signal from the first summer and a second amplified signal, the second amplified signal being related to the residual signal, wherein the first amplified signal is amplified with a first gain and the second amplified signal is amplified with a second gain, the first gain being different from the first gain;
- and
- a power amplifier circuit configured to receive a first sum signal from the second summer, wherein the power amplifier includes a power input receiving an amplitude component signal related to a separation of the input signal and the residual signal.
Dependencies are inferred from the claim text.