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US 8,975,959 B2Granted
Monotonic conversion of RF power amplifier calibration data
AssigneeRF Micro Devices, Inc.
InventorNadim Khlat
Life of this patent
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Abstract
Circuitry, which includes data memory and processing circuitry, is disclosed. The data memory is used to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data. The processing circuitry converts at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data. As such, a magnitude of an envelope power supply control signal is determined based on a magnitude of an RF input signal using the monotonic response curve-based data.
Claims23
Circuitry comprising:
- data memory adapted to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data;
- and
- processing circuitry adapted to convert at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data, wherein a magnitude of an envelope power supply control signal is based on a magnitude of an RF input signal and using the monotonic response curve-based data, wherein the monotonic response curve-based data is a pre-distortion of the LUT-based RF PA calibration data to reduce noise on an envelope power supply signal, wherein the envelope power supply signal is based on the envelope power supply control signal.
Circuitry comprising:
- data memory adapted to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data;
- and
- processing circuitry adapted to convert at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data, wherein a magnitude of an envelope power supply control signal is based on a magnitude of an RF input signal and using the monotonic response curve-based data, wherein the monotonic response curve-based data is based on a high order polynomial interpolation of at least a portion of the LUT-based RF PA calibration data.
Circuitry comprising:
- data memory adapted to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data;
- and
- processing circuitry adapted to convert at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data, wherein a magnitude of an envelope power supply control signal is based on a magnitude of an RF input signal and using the monotonic response curve-based data, wherein the LUT-based RF PA calibration data is based on calibrating a calibration RF PA for approximately constant gain operation over a calibration RF power range.
Circuitry comprising:
- data memory adapted to store look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data;
- and
- processing circuitry adapted to convert at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data, wherein a magnitude of an envelope power supply control signal is based on a magnitude of an RF input signal and using the monotonic response curve-based data, wherein the monotonic response curve-based data is based on a monotonic response curve that is representative of a calibration envelope power supply signal relative to a calibration RF input signal.
A method comprising:
- storing look-up table (LUT)-based radio frequency (RF) power amplifier (PA) calibration data;
- and
- converting at least a portion of the LUT-based RF PA calibration data to provide monotonic response curve-based data, wherein a magnitude of an envelope power supply control signal is based on a magnitude of an RF input signal and using the monotonic response curve-based data, wherein the monotonic response curve-based data is a pre-distortion of the LUT-based RF PA calibration data to reduce noise on an envelope power supply signal, wherein the envelope power supply signal is based on the envelope power supply control signal.
Dependencies are inferred from the claim text.