Tunable matching network

US5430417A · kind A · utility

Assignee

• AFT Advanced Ferrite Technology · DE

Inventors

• Siegbert Martin · Oppenweiler, DE
• Erich Pivit · Allmersbach im Tal, DE

Key dates

• Filing date: Jan 4, 1994
• Grant date: Jul 4, 1995
• Expiry date: Jan 4, 2014

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P5/04
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A matching network is to be provided which can quickly and easily be tuned to a desired impedance. The matching network has a first and a second line which are interconnected at one end, while their other ends are coupled to a microwave line, and a third line which branches off from the interconnection of the other two lines. The first and/or second line and the third line are loaded with ferrite. The ferrite of the first and/or second line and that of the third line are exposed to separate magnetic fields which can be varied independently of each other.