RF power amplifier with total radiated power stabilization
First Claim
1. Circuitry comprising an IC package, which comprises:
- a package interface coupled to upstream RF system circuitry;
an RF amplification circuit configured to amplify an RF signal to generate an amplified RF signal; and
a closed-loop gain linearization circuit, such that the RF amplification circuit and the closed-loop gain linearization circuit form a fast control loop and a slow control loop, wherein;
the slow control loop is configured to;
estimate a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate using a representation of the amplified RF signal; and
control a fast loop gain of the fast control loop based on the TRP estimate; and
the fast control loop is configured to apply a gain adjustment to the RF amplification circuit based on the fast loop gain and a difference between a target reference amplitude and a measured feedback amplitude, wherein the gain adjustment controls amplitude distortion in the RF amplification circuit and the fast loop gain controls TRP-drift in the RF amplification circuit, wherein the TRP-drift is at least partially based on Voltage Standing Wave Ratio (VSWR) variations presented to an output from the RF amplification circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
A radio frequency (RF) amplification circuit and a closed-loop amplitude linearization circuit are disclosed. The RF amplification circuit amplifies an RF signal to generate an amplified RF signal. The RF amplification circuit and the closed-loop amplitude linearization circuit form a fast control loop and a slow control loop. The slow control loop estimates a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate using a representation of the amplified RF signal, and controls a fast loop gain of the fast control loop based on the TRP estimate. The fast control loop applies a gain adjustment to the RF amplification circuit based on the fast loop gain and a difference between a target reference amplitude and a measured feedback amplitude. The gain adjustment controls amplitude distortion in the RF amplification circuit. The fast loop gain controls TRP-drift in the RF amplification circuit.
79 Citations
30 Claims
-
1. Circuitry comprising an IC package, which comprises:
-
a package interface coupled to upstream RF system circuitry; an RF amplification circuit configured to amplify an RF signal to generate an amplified RF signal; and a closed-loop gain linearization circuit, such that the RF amplification circuit and the closed-loop gain linearization circuit form a fast control loop and a slow control loop, wherein; the slow control loop is configured to; estimate a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate using a representation of the amplified RF signal; and control a fast loop gain of the fast control loop based on the TRP estimate; and the fast control loop is configured to apply a gain adjustment to the RF amplification circuit based on the fast loop gain and a difference between a target reference amplitude and a measured feedback amplitude, wherein the gain adjustment controls amplitude distortion in the RF amplification circuit and the fast loop gain controls TRP-drift in the RF amplification circuit, wherein the TRP-drift is at least partially based on Voltage Standing Wave Ratio (VSWR) variations presented to an output from the RF amplification circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. Circuitry comprising:
-
an RF amplification circuit configured to amplify an RF signal to generate an amplified RF signal; and a closed-loop gain linearization circuit, such that the RF amplification circuit and the closed-loop gain linearization circuit form a fast control loop and a slow control loop, wherein; the slow control loop includes a first programmable attenuator and a total radiated power (TRP) control circuit and is configured to control a slow loop gain of the slow control loop by adjusting the first programmable attenuator using the TRP control circuit based on aggregated loop error signal; the fast control loop includes a second programmable attenuator and the TRP control circuit and is configured to control a fast loop gain of the fast control loop by adjusting the second programmable attenuator using the TRP control circuit based on the aggregated loop error signal; and each of the first programmable attenuator and the second programmable attenuator is configured to apply a gain adjustment to the RF amplification circuit based on the slow loop gain and the fast loop gain, respectively, wherein the first programmable attenuator controls TRP-drift in the RF amplification circuit and the second programmable attenuator controls amplitude distortion in the RF amplification circuit. - View Dependent Claims (15)
-
-
16. Circuitry comprising:
-
an integrated circuit (IC) package having a package interface coupled to upstream RF system circuitry and configured to receive a radio frequency (RF) signal from the upstream RF system circuitry and provide an amplified RF signal; an RF amplification circuit in the IC package and configured to amplify the RF signal to generate the amplified RF signal; and a closed-loop gain linearization circuit in the IC package and configured to endogenously; estimate a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate of the amplified RF signal; determine a measured feedback power based on the TRP estimate; and apply a gain adjustment to the RF amplification circuit based on a power difference between a target reference power of the amplified RF signal and the measured feedback power, wherein the gain adjustment controls at least one of amplitude distortion in the RF amplification circuit and TRP-drift in the RF amplification circuit, wherein the TRP-drift is at least partially based on Voltage Standing Wave Ratio (VSWR) variations presented to an output from the RF amplification circuit. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
Specification