Patent · US Expired

Waveguide directional coupler capable of propagating higher order modes

US6127902A · kind A · utility

3Cited by

4References

1Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Werner Speldrich · Backnang, DE
Uwe Rosenberg · Backnang, DE

Key dates

Filing date	Apr 8, 1998
Grant date	Oct 3, 2000
Priority date	—
Expiry date	Apr 8, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH01P5/182
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A simply made and very broad band directional coupler includes a hollow middle section (CS) provided with an empty interaction space having two ends, one pair of hollow guides (H1, H3) coupled to one end of the interaction space, another pair of hollow guides coupled to another end of the interaction space and a coupler diaphragm (KB1, KB2, KB3, KB4) provided between the interaction space (KR) and each individual hollow guide coupled to it. Higher wave types (are consisting of TE11 and TM11 modes) propagated in the interaction space (KR) as well as a fundamental wave type (TE 10). Furthermore a height (h) of the interaction space is at least 2.5 times the smallest height (b) of a coupling diaphragm (KB1, KB2, KB3, KB4) so that a comparatively broad band directional coupler results.

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