Design of a digital automatic gain control with backward difference transformation

Anbang Liu*, Jianping An, Aihua Wang

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

6 引用 (Scopus)

摘要

The design of a digital Automatic Gain Control (AGC) prior to a digital Phase Locked Loop (PLL) that uses the backward difference Transformation is described. This design is applicable to an Automatic Gain Control with an exponential gain controlled amplifier and a logarithmic amplifier, which obtains a gain settling time independent of the absolute gain. Use of this design permits the designer to specify the performance of the digital AGC system with respect to the similar analog AGC. A mathematical model for the digital AGC for the backward difference equation is established to investigate the characteristics of the scheme. Based on the backward difference equation, we analyze the transfer function and the transient response of the AGC. It has been verified that the results by the digital AGC agree with the analog AGC obtained on the condition that the sample interval is small.

源语言英语
主期刊名2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010
DOI
出版状态已出版 - 2010
活动2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010 - Chengdu, 中国
期限: 23 9月 201025 9月 2010

出版系列

姓名2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010

会议

会议2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010
国家/地区中国
Chengdu
时期23/09/1025/09/10

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