Measuring device and method for determining a characteristic curve of a high frequency unit

US6973401B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Joachim Eibl · Munich, DE
• Jochen Pliquett · Glonn, DE
• Hagen Eckert · Mering, DE

Key dates

• Filing date: Oct 27, 2003
• Grant date: Dec 6, 2005
• Expiry date: Feb 27, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R27/32
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a method and a measuring device for determining a characteristic curve of a high frequency transmitter for transmitting a high frequency signal modulated with a modulation signal. A high frequency signal transmitted by the high frequency transmitter is received by a receiving device (16) and samples of a complex value, real baseband signal (MEAS) are generated therefrom. By demodulation of the samples of the real baseband signal (MEAS), a modulation symbol sequence (SYM) is obtained, from which an ideal baseband signal (REF) is simulated as reference signal. The real baseband signal (MEAS) is corrected, a corrected, real baseband signal (MEAS′) is generated and the deviations of the samples of the corrected, real baseband signal (MEAS′) from the samples of the ideal baseband signal (REF) are evaluated.