Patent · US Active

Power measuring device with internal calibration of diode detectors

US9568518B2 · kind B2 · utility

0Cited by

8References

16Claims

0Family size

Assignee

Rohde & Schwarz GmbH & Co. KG · DE

Inventors

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

Key dates

Filing date	Jan 28, 2014
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Mar 4, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01R35/005
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A measuring device for measuring a power of a measurement signal comprises an analog-processing unit (1) and a calibration unit (5) for the implementation of a calibration procedure. The analog-processing unit (1) provides two detector diodes (14, 15) connected in an antiparallel manner relative to a signal input (10) and an amplifier (50) for the amplification of signals which are derived from output signals of the detector diodes (14, 15). The analog-processing unit (1) further provides a chopper unit (28) which is connected at two terminals in series between the detector diodes (14, 15) and the amplifier (50). In this context, the calibration unit (5) comprises at least one current source, wherein the current sources (46, 47) is connected to at least one input terminal of the amplifier (50).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.