发明授权
- 专利标题： Radio receiver with improved automatic gain control
- 专利标题（中）： 具有改进的自动增益控制的无线接收机
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申请号： US627032申请日： 1990-12-13
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公开(公告)号： US5203019A公开(公告)日： 1993-04-13
- 发明人: Heinz Rinderle
- 申请人： Heinz Rinderle
- 申请人地址： DEX Heilbronn
- 专利权人： Telefunken Electronic GmbH
- 当前专利权人： Telefunken Electronic GmbH
- 当前专利权人地址： DEX Heilbronn
- 优先权： DEX3942959 19891223
- 主分类号： H04B1/10
- IPC分类号： H04B1/10 ; H03G3/20 ; H04B1/30
摘要：
In a radio receiver in accordance with the heterodyne principle or with the homodyne principle, two additional transmission channels are provided for interference suppression. The two additional transmission channels have a different degree of distortion. Either mixing with a heterodyne oscillator signal takes place in each of the two transmission channels and the resultant intermediate frequency signals or baseband signals are added in phase opposition to give a sum signal, or the output signals of the two additional transmission channels are added in phase opposition to give a sum signal and the resultant sum signal is mixed with a heterodyne oscillator signal to give an intermediate frequency signal or baseband signal. The signals obtained after addition and mixing and derived from the output signals of the two additional transmission channels are frequency-selected and demodulated, and the demodulated signal is used for gain control.
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