Configuration for digital-analog conversion of high-frequency digital input signal into carrier-frequency analog output signal

US7132969B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Armin Fuchs · Deggingen, DE
• Björn Jelonnek · Ulm, DE
• Gunter Wolff · Ulm, DE

Key dates

• Filing date: Jul 28, 2003
• Grant date: Nov 7, 2006
• Expiry date: Jul 28, 2023

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M3/504
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A delay device has at least one first delay element and optional additional delay elements connected downstream from the first in a serially consecutive manner. The digital input signal is connected to an input of the first delay element and is connected to an input of a first D/A converter. The output of the first delay element is connected to an input of another D/A converter assigned thereto. The optional additional delay elements each have outputs connected to an input of another D/A converter assigned to the respective delay elements. All D/A converters are combined on the output side in a step-by-step manner so that output signals of all D/A converters form the analog output signal or the device. A specific coefficient is assigned to each D/A converter, and a specific delay time is assigned to each delay element for realizing a filter characteristic.