Patent · US Active

Measuring power

US8203398B2 · kind B2 · utility

0Cited by

7References

18Claims

0Family size

Assignee

HUETTINGER Elektronik GmbH + Co. KG · DE

Inventors

Ekkehard Mann · Gundelfingen, DE
Christoph Gerhardt · Glückstadt, DE
Christian Thome · Glückstadt, DE
Christian Wangler · Glückstadt, DE
Daniel Krausse · Mountain View, US
Stephan Guenther · Staufen im Breisgau, DE
Rolf Weber · Hamilton, CA

Key dates

Filing date	Aug 7, 2009
Grant date	Jun 19, 2012
Priority date	—
Expiry date	Oct 15, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG01R27/28
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

One aspect of the invention includes a directional coupler having a coupling factor in the forward direction determined from the equation C=Cf·ejφ, a coupling factor in the reverse direction determined from the equation C=Cr·ejφ, an isolation in the forward direction determined from the equation I=If·ejφ, and an isolation in the reverse direction determined from the equation I=Ir·ejφ, wherein at least one condition is met from among the group consisting of: (1) the absolute value of Δφ=φCr+φCf−(φIr+φIf) being less than or equal to 20°,is less than or equal to 1.6, and (3) Cf=Cr and If=Ir.

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