Detector circuit

US9140733B2 · kind B2 · utility

Assignee

• QUALCOMM Technologies Inc. · US

Inventors

• Edgar Schmidhammer · Stein an der Traun, DE
• Veit Meister · Erkner, DE
• Gerhard Zeller · Munich, DE

Key dates

• Filing date: Feb 18, 2011
• Grant date: Sep 22, 2015
• Expiry date: Mar 11, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R27/06
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A detector circuit can be used for determining the reflection coefficients of HF signals in a signal path. The detector circuit includes a bidirectional hybrid coupler, logarithmic amplifiers connected to the hybrid couple, and a subtractor having an offset connection.