Patent · US Expired

Branch separating filter

US5274344A · kind A · utility

3Cited by

3References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Langer · Munich, DE
Gerhard Pfitzenmaier · Puchheim, DE
Klaus Vogel · Gondelsheim, DE
Walter Meier · Cumming, US

Key dates

Filing date	May 6, 1992
Grant date	Dec 28, 1993
Priority date	—
Expiry date	May 6, 2012

Classification

Technology area (CPC H)Electricity
CPC primaryH01P1/2138
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The disclosed waveguide branch separating filter can be modularly constructed of a basic frequency separating filter and of a filter expansion unit. Both the basic frequency separating filter as well as the filter expansion unit are composed of a reactively terminated (including short circuit) feeder waveguide to which the separating filters are coupled. The expansion of the basic frequency separating filter occurs in largely disturbance-free fashion during operation in that the reactive termination (including short circuit) thereof is mechanically replaced by the filter expansion unit and is electrically simulated during the refitting by a short-circuit plate or by short-circuit pins.

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