Patent · US Expired

Sealed microwave feedthrough

US7557679B2 · kind B2 · utility

2Cited by

4References

13Claims

0Family size

Assignee

ERICSSON AB · SE

Inventors

Siegbert Martin · Oppenweiler, DE
Klaus Junger · Backnang, DE
Axel Mayr · Backnang, DE

Key dates

Filing date	Feb 6, 2003
Grant date	Jul 7, 2009
Priority date	—
Expiry date	Jun 6, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH01P1/08
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A feedthrough for feeding a microwave signal through a wall of a casing comprises a signal waveguide having at least two portions having different cross-sections. The portion having the smaller cross-section is filled with plastically-deformable dielectric material which, under the action of pressure and heat, is bonded to the walls of the portion in which it is located. The dimensions of the portion are such as to provide an impedance match with the adjacent portions. An antenna couples electromagnetic energy between the waveguide and a strip transmission line. A metal cap seals the end of the waveguide and screens the antenna.

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