Patent · US Expired

Microwave phase shifter

US4837528A · kind A · utility

2Cited by

6References

12Claims

0Family size

Assignee

Ant Nachrichtentechnik GmbH · DE

Inventors

Gunter Morz · Ludwigsburg, DE
Erich Pivit · Allmersbach im Tal, DE
Sigmund Lenz · Aspach, DE

Key dates

Filing date	Feb 17, 1988
Grant date	Jun 6, 1989
Priority date	—
Expiry date	Feb 17, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH01P1/30
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A phase shifter suitable for operation at very high high-frequency power is composed of a waveguide in which ferromagnetic material is distributed along at least one plane extending in the direction of wave propagation. The ferromagnetic material is exposed to a static magnetic field oriented parallel to the plane. The ferromagnetic material is shaped so that it forms a plurality of three-dimensional regions which extend in the direction of the applied static magnetic field from one waveguide wall to the opposite waveguide wall. These regions may be provided by a plurality of ferromagnetic rods, preferably housed in one or more dielectric containers to direct a flow of coolant fluid, or by a ferromagnetic body having a plurality of bores. Such bores also preferably direct a flow of coolant fluid.

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