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Tuning methods for loop-filters of continuous-time sigma-delta modulators

A time loop and modulator technology, applied in differential modulation, analog conversion, electrical components, etc.

Active Publication Date: 2009-03-18
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This tuning technique usually already requires considerable additional circuit overhead, and may also require replication of the overall complex system, with which a trial-and-error evaluation is performed to empirically determine the desired coefficient values

Method used

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  • Tuning methods for loop-filters of continuous-time sigma-delta modulators
  • Tuning methods for loop-filters of continuous-time sigma-delta modulators
  • Tuning methods for loop-filters of continuous-time sigma-delta modulators

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Embodiment Construction

[0018] Exemplary System

[0019] figure 2 An exemplary environment 100 is shown in which techniques in accordance with this disclosure may be implemented. In such an embodiment, the environment 100 includes a communication device 110 having one or more continuous time sigma-delta (CTSD) modulators 150 configured in accordance with the teachings of the present disclosure. Communication device 110 is in operable communication with a plurality of other communication devices 142 through one or more networks 140 . Alternatively, communication device 110 may bypass network 140 and communicate directly with one or more other communication devices 142 .

[0020] In this representative environment 100, communication device 110 is a handheld device, such as a cell phone, personal data assistant (PDA), global positioning system (GPS) unit, or other similar handheld device, and other communication devices 142 may include, for example, computer 142A , other handheld devices 142B, gro...

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Abstract

The invention relates to a tuning methods for loop-filters of continuous-time sigma-delta modulators. Techniques for tuning filters of modulation circuits are described herein.

Description

technical field [0001] The present invention relates to a technique for tuning a filter of a modulation circuit, and more particularly to a tuning method for a loop filter of a continuous-time sigma-delta modulator. Background technique [0002] There are many types of circuits that use modulators. For example, communication circuits used to send and receive communication signals typically include receiver or transceiver circuits with modulators. Such communication circuits may be used in a variety of devices and applications, including telephones, televisions, wireless computing devices, audio devices, personal data assistants (PDAs), and any other suitable system for transmitting signals. Of course, many other types of circuits may include modulators in addition to communication circuits. [0003] A sigma-delta modulator operating as a continuous-time modulator (so-called continuous-time sigma-delta modulator) has the advantage of lower power consumption than a sigma-del...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M3/04
CPCH03M3/458H03M3/386
Inventor A·迪吉安多梅尼科D·桑塞贡多贝洛A·维斯鲍尔F·巴拉林M·克拉拉
Owner INFINEON TECH AG