Front end module comprising an antenna tuner

US9142887B2 · kind B2 · utility

Assignee

• EPCOS AG · DE

Inventors

• Pasi Tikka · Munich, DE
• Gerhard Zeller · Munich, DE

Key dates

• Filing date: Apr 12, 2010
• Grant date: Sep 22, 2015
• Expiry date: Oct 10, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/0458
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A front end module for a wireless transmission/reception device has two antennas and two signal paths connected thereto. A mismatch in the antenna is identified by monitoring the transmitted power and the reflected power in the active and passive signal paths and using the powers in a controller to generate a control signal for the antenna tuner. In this case, decreasing isolation between the first and second antennas and the first and second signal paths is identified, and is compensated for using different devices, in order to ensure faster and safer antenna matching.