Wireless communication unit, interference detection circuit and method for interference detection

US10790916B2 · kind B2 · utility

Assignee

• NXP B.V. · NL

Inventors

• Gustavo Adolfo Guarin Aristizabal · Munich, DE
• Arnaud Sion · Munich, DE
• Ralf Reuter · Landshut, DE
• Marcel Welpot · Munich, DE

Key dates

• Filing date: Feb 27, 2018
• Grant date: Sep 29, 2020
• Expiry date: Apr 27, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/352
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A wireless communication unit (100) is described that comprises: at least one receiver configured to receive a radio frequency signal on at least one receiver channel (262, 264, 266, 268) and comprising a plurality of receiver circuits; at least one interference detection circuit (244, 248, 252) coupled to an output of at least one of the plurality of receiver circuits and configured to detect a saturation event of a signal output from the at least one of the plurality of receiver circuits; and a controller (114) configured to identify interference in a received signal. The at least one interference detection circuit (244, 248, 252) comprises at least one counter (118) configured to count a number of saturation events in at least one of the plurality of receiver circuits over a time limited period; and at least one comparator (202, 212, 222) coupled to the at least one counter (118) and configured to compare a count value of the number of saturation events from the at least one counter (118) with a counter threshold to indicate a presence of interference in the signal, when the counter threshold is exceeded.