发明名称 |
Automatic gain control circuit for multilevel duobinary AM/PSK modulated signals |
摘要 |
An automatic gain control circuit for multilevel duobinary AM/PSK (amplitude modulation/phase shift keying) signals allows multilevel modulated signals to be received accurately. The circuit includes an amplifier that is controlled such that during a preamble section the amplifier has a gain associated with the level of the inputted signal. During a data section the amplifier is controlled to maintain a substantially constant gain. The invention may be used in the reception of AM/PSK modulated signals.
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申请公布号 |
US5081653(A) |
申请公布日期 |
1992.01.14 |
申请号 |
US19880232946 |
申请日期 |
1988.08.17 |
申请人 |
NEC CORPORATION |
发明人 |
SAITO, TOSHIO |
分类号 |
H03G3/30;H03G3/20;H04B3/06;H04B3/10;H04L27/06;H04L27/38 |
主分类号 |
H03G3/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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