Circuitry distortion corrector, measurement device, correction data generator, and correction method

US11502759B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Andrew Schaefer · Oberhaching, DE
• Andreas Ziegler · Schaffhausen, CH

Key dates

• Filing date: Dec 18, 2020
• Grant date: Nov 15, 2022
• Expiry date: Feb 2, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R13/0218
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present disclosure provides a circuitry distortion corrector for correcting distortions of electrical signals. The circuitry distortion corrector comprises a first correction filter that filters the received signals, and a second correction filter that is coupled to the first correction filter and filters the signals that are filtered by the first correction filter. The first correction filter operates based on first filter coefficients that are based on first value tuples, each first value tuple comprising a first frequency and a respective first circuitry characterizing value, and wherein the first frequencies are equally spaced apart, and the second correction filter operates with second filter coefficients that are based on second value tuples, each second value tuple comprising a second frequency and a respective second circuitry characterizing value, wherein the second frequencies are logarithmically spaced apart.