发明授权
- 专利标题： Method and system for automatic gain control in a satellite communications system
- 专利标题（中）： 卫星通信系统中自动增益控制的方法和系统
-
申请号： US10043668申请日： 2002-01-10
-
公开(公告)号： US06904273B2公开(公告)日： 2005-06-07
- 发明人: J. Mark Steber , Richard Clewer , Kumud Patel , Bala Subramaniam
- 申请人： J. Mark Steber , Richard Clewer , Kumud Patel , Bala Subramaniam
- 申请人地址： US CA El Segundo
- 专利权人： Hughes Electronics Corporation
- 当前专利权人： Hughes Electronics Corporation
- 当前专利权人地址： US CA El Segundo
- 代理商 Craig Plastrik
- 主分类号： H03G3/30
- IPC分类号： H03G3/30 ; H04B1/06
摘要：
An apparatus for providing automatic gain control for use in a satellite terminal of a satellite communication system capable of transmitting a plurality of different modes of data. The apparatus includes a demodulator circuit having an analog to digital converter; a first variable attenuator having an attenuation value set on the basis of a measured power level of a predetermined data signal; and a second variable attenuator having an attenuation value set on the basis of the mode of data being received by the satellite terminal, where each of the data modes have a corresponding predetermined attenuation value associated therewith which is utilized as the attenuation value of the second variable attenuator when the satellite terminal receives the data mode.