RF power transmission, modulation, and amplification embodiments
First Claim
1. An apparatus for RF power transmission, modulation, and amplification, comprising:
- a bias circuit configured to generate a bias signal, wherein the bias circuit is configured to receive input information and to generate the bias signal according to the input information, wherein the input information comprises an in-phase data component or a quadrature data component;
a vector modulator configured to generate a constant envelope signal by multiplying the in-phase data component with a corresponding in-phase amplitude component and multiplying the quadrature data component with a corresponding quadrature amplitude component; and
an amplifier configured to amplify the constant envelope signal using the bias signal.
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Abstract
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
754 Citations
18 Claims
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1. An apparatus for RF power transmission, modulation, and amplification, comprising:
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a bias circuit configured to generate a bias signal, wherein the bias circuit is configured to receive input information and to generate the bias signal according to the input information, wherein the input information comprises an in-phase data component or a quadrature data component; a vector modulator configured to generate a constant envelope signal by multiplying the in-phase data component with a corresponding in-phase amplitude component and multiplying the quadrature data component with a corresponding quadrature amplitude component; and an amplifier configured to amplify the constant envelope signal using the bias signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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generating a bias signal using a bias circuit, wherein the bias circuit is configured to receive input information and to generate the bias signal according to the input information, wherein the input information comprises an in-phase data component or a quadrature data component; generating a constant envelope signal using a vector modulator by multiplying the in-phase data component with a corresponding in-phase amplitude component and multiplying the quadrature data component with a corresponding quadrature amplitude component; and amplifying the constant envelope signal with an amplifier using the bias signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification