RF power amplifier with PM feedback linearization
First Claim
1. Circuitry comprising:
- a package interface configured to receive a radio frequency (RF) signal and provide an amplified RF signal;
an RF amplification circuit configured to amplify the RF signal to generate the amplified RF signal, such that an intermediate RF signal is generated during amplification of the RF signal; and
a closed-loop phase linearization circuit configured to;
endogenously establish a target phase of the amplified RF signal using the RF signal; and
apply a phase-shift to the intermediate RF signal based on a difference between the target phase and a measured phase, which is representative of a phase of the amplified RF signal, wherein the phase-shift reduces phase distortion in the amplified RF signal.
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Accused Products
Abstract
Circuitry, which includes a package interface, an RF amplification circuit, and a closed-loop phase linearization circuit, is disclosed. The package interface receives an RF signal and provides an amplified RF signal. The RF amplification circuit amplifies the RF signal to generate the amplified RF signal, such that an intermediate RF signal is generated during amplification of the RF signal. The closed-loop phase linearization circuit endogenously establishes a target phase of the amplified RF signal using the RF signal. Further, the closed-loop phase linearization circuit applies a phase-shift to the intermediate RF signal based on a difference between the target phase and a measured phase, which is representative of a phase of the amplified RF signal, wherein the phase-shift reduces phase distortion in the amplified RF signal.
53 Citations
25 Claims
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1. Circuitry comprising:
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a package interface configured to receive a radio frequency (RF) signal and provide an amplified RF signal; an RF amplification circuit configured to amplify the RF signal to generate the amplified RF signal, such that an intermediate RF signal is generated during amplification of the RF signal; and a closed-loop phase linearization circuit configured to; endogenously establish a target phase of the amplified RF signal using the RF signal; and apply a phase-shift to the intermediate RF signal based on a difference between the target phase and a measured phase, which is representative of a phase of the amplified RF signal, wherein the phase-shift reduces phase distortion in the amplified RF signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method comprising:
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using a package interface to receive a radio frequency (RF) signal and provide an amplified RF signal; amplifying the RF signal to generate the amplified RF signal using an RF amplification circuit, such that an intermediate RF signal is generated during amplification of the RF signal; endogenously establishing a target phase of the amplified RF signal using the RF signal; and applying a phase-shift to the intermediate RF signal based on a difference between the target phase and a measured phase, which is representative of a phase of the amplified RF signal, wherein the phase-shift reduces phase distortion in the amplified RF signal.
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Specification