Broadband matching network

US10469038B2 · kind B2 · utility

Assignee

• COMET AG · DE

Inventors

• Anton Labanc · Ehrenkirchen, DE
• Daniel Gruner · Müllheim, DE
• Markus Reiff · Eschweiler, DE

Key dates

• Filing date: Jul 25, 2017
• Grant date: Nov 5, 2019
• Expiry date: Jul 10, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03F2200/541
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

The invention describes a broadband matching network for coupling to an output of an amplifying device for amplifiers with a nominal operating frequency between 1 MHz and 100 MHz. The broadband matching network comprises a planar transformer with a primary winding arranged on a primary side of the broadband matching network and a secondary winding arranged on a secondary side of the broadband matching network. The primary winding is arranged to be electrically connected to the output of the amplifying device. The broadband matching network is characterized by a center frequency and a bandwidth with a frequency range of at least +/−3%. A first parallel resonance frequency and a second parallel resonance frequency of the broadband matching circuit are arranged around the series resonance frequency such that a frequency dependence of a load impedance provided by the broadband matching network for the amplifying device is reduced.