Methods and transceivers for reducing a distortion component within a baseband receive signal

US10992335B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Ahmed Elmaghraby · Neubiberg, DE
• Ram Kanumalli · Linz, AT
• Werner Schelmbauer · Linz, AT
• Stefan Herzinger · Sauerlach, DE
• Peter Noest · Munich, DE

Key dates

• Filing date: Jun 1, 2017
• Grant date: Apr 27, 2021
• Expiry date: Jun 26, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/123
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.