Power sensor

US6803754B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Toralf Bratfisch · Putzbrunn, DE
• Arnd Diestelhorst · Munich, DE
• Michael Katzer · Munich, DE
• Thomas Reichel · Heroldsbach, DE

Key dates

• Filing date: Sep 3, 2002
• Grant date: Oct 12, 2004
• Expiry date: Nov 12, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R21/12
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A power sensor for measuring the average power of modulated or non-modulated high-frequency or microwave signals across a wide dynamic range is disclosed, in which a combination of the following features are used: a) the signal power to be measured is delivered to a first sensor branch for measuring said signal power in a lower power measuring range (−70 to −16 dBm), b) the sensor branch has several spatially separate measuring points on a connecting line between the input and a power splitter connected downstream; and, c) at the same time, the signal power to be measured is delivered to at least two other sensor branches by means of the power splitter with a largely load-independent synchronous output, via attenuators, in order to measure the signal power in at least two other power measuring ranges (−22 to +4 dBm or −2 to +20 dBm).