Circuit configuration for a multistandard communications terminal

US6697438B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Markus Doetsch · Köniz, CH
• Peter Jung · Munich, DE
• Jörg Plechinger · Hersbruck, DE
• Peter Schmidt · Ellerstadt, DE
• Sonke Mehrgardt · March, DE

Key dates

• Filing date: Jul 2, 2001
• Grant date: Feb 24, 2004
• Expiry date: Jul 17, 2022

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/30
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A circuit configuration for a multistandard communications terminal has, for the reception of radio signals, a radio frequency component with a receive conversion stage and a signal-processing circuit connected downstream of the radio frequency component. The signal-processing circuit has an A/D converter and a digital filter. The pass-band of the digital filter is variable. In operation, the pass-band is set according to a selected system standard of the received radio signals.