Methods and apparatuses for reflection measurements

US11082015B2 · kind B2 · utility

Assignee

• Andrew Wireless Systems GmbH · DE

Inventors

• Peter Gunzner · Monheim, DE
• Johannes Steigert · Harburg, DE
• Felix Lübbers · Augsburg, DE
• Peter Schmid · Rain, DE
• Patrick Braun · Munningen, DE

Key dates

• Filing date: Sep 3, 2019
• Grant date: Aug 3, 2021
• Expiry date: Jan 15, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/04
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Techniques are provided to more accurately determine reflected power, reflection coefficient, and/or voltage standing wave to permit prompt protection of components such as power amplifiers and notify communication system operators. This is accomplished by more accurately determining an amplitude and phase of an output reflected signal at an output port of a bidirectional coupler as a function of the following: an amplitude and a phase of a coupled forward signal coupled into a forward coupled port of the bidirectional coupler; an amplitude and a phase of a coupled reverse signal coupled into a reverse coupled port of the bidirectional coupler; an electrical transmission parameter from an input port of the bidirectional coupler to the forward coupled port; an electrical transmission parameter from the input port to the reverse coupled port; and an electrical transmission parameter from an output port of the bidirectional coupler to the reverse coupled port.