System and a method for determining an image rejection characteristic of a receiver within a transceiver

US10261193B2 · kind B2 · utility

Assignee

• Intel IP Corporation · US

Inventors

• Rainer Kreienkamp · Düsseldorf, DE
• Junlin Yan · Düsseldorf, DE
• Harald Doppke · Mülheim an der Ruhr, DE
• Markus Hammes · Dinslaken, DE

Key dates

• Filing date: May 11, 2016
• Grant date: Apr 16, 2019
• Expiry date: Dec 4, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S19/23
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining an image rejection characteristic of a receiver within a transceiver is provided. The transceiver uses a common local oscillator. The method includes generating a test signal having a spectral peak and generating a local oscillator signal comprising a frequency with an offset from a center frequency of the spectral peak. Further, the method includes down-mixing the test signal in the receiver using the local oscillator signal to generate a down-mixed signal. The method further includes calculating a first value of a signal characteristic of the down-mixed signal in a first frequency range corresponding to a desired signal component of the down-mixed signal and calculating a second value of the signal characteristic of the down-mixed signal in a second frequency range corresponding to an undesired signal component of the down-mixed signal. Further, the method includes comparing the first value and the second value to generate the image rejection characteristic.