US 12,587,222 B2 · Passive intermodulation mitigation coefficient determination based on received data

Abstract

Passive intermodulation (PIM) correction circuitry mitigates the effects of PIM within receiver circuitry. The PIM correction circuitry includes modeling circuitry, adapt circuitry, and compensation circuitry. The modeling circuitry receives one or more transmitter data signals. Further, the modeling circuitry generates output signals based on the one or more transmitter data signals, and a correction signal based on the output signals and correction coefficients. The correction signal is combined with an input signal to generate a corrected output signal. The adapt circuitry receives a first output signal of the output signals and the corrected output signal. The adapt circuitry correlates the first output signal with the corrected output signal to generate update values. The compensation circuitry receives the update values and generates updated correction coefficients based on the update values.

Claims20

Dependent claims

A passive intermodulation correction circuitry comprising:

modeling circuitry configured to receive one or more transmitter data signals, generate output signals based on the one or more transmitter data signals, and generate a correction signal based on the output signals and correction coefficients, wherein the correction signal is combined with an input signal to generate a corrected output signal;
adapt circuitry configured to:
receive a first output signal of the output signals and the corrected output signal;
and
correlate the first output signal with the corrected output signal to generate update values by adding a first intermediate signal with a delayed version of the first intermediate signal, the first intermediate signal is generated based on a complex conjugate of the first output signal and the corrected output signal;
and
compensation circuitry configured to receive the update values and generate updated correction coefficients based on the update values.

4 more elements

An integrated circuit (IC) device comprising:

passive intermodulation (PIM) correction circuitry comprising:
modeling circuitry configured to receive one or more transmitter data signals, generate output signals based on the one or more transmitter data signals, and generate a correction signal based on the output signals and correction coefficients, wherein the correction signal is combined with an input signal to generate a corrected output signal;
adapt circuitry configured to receive a first output signal of the output signals and the corrected output signal, and correlate the first output signal with the corrected output signal to generate update values by adding a first intermediate signal with a delayed version of the first intermediate signal, the first intermediate signal is generated based on a complex conjugate of the first output signal and the corrected output signal;
and
compensation circuitry configured to receive the update values and generate updated correction coefficients based on the update values and the correction coefficients.

2 more elements

A method comprising:

outputting a corrected output signal based on an input signal and a correction signal;
receiving, via modeling circuitry of passive intermodulation (PIM) correction circuitry, one or more transmitter data signals;
generating, via the modeling circuitry, output signals based on the one or more transmitter data signals, and generating the correction signal based on the output signals and correction coefficients;
and
correlating, via adapt circuitry of the PIM correction circuitry, a first output signal of the output signals with the corrected output signal to generate one or more update values by adding an intermediate signal with a delayed version of the intermediate signal, the intermediate signal is generated based on a complex conjugate of the first output signal and the corrected output signal;
and
generating updated correction coefficients based on the update values.

4 more elements

Dependencies are inferred from the claim text.

Passive intermodulation mitigation coefficient determination based on received data

Life of this patent

Passive intermodulation mitigation coefficient determination based on received data

Life of this patent

Abstract

Claims20