发明名称 |
Frequency-shift-keyed data detector |
摘要 |
There is disclosed an apparatus and technique for recovering frequency-shift-keyed (FSK) data from a conventional FM detector while allowing the system to operate over wide temperature ranges without FM detector temperature compensation. The FSK input signal is coupled through a bandpass filter and differentiated to provide positive and negative voltage spikes. The voltage spikes are compared with positive and negative reference levels to produce set and reset inputs to a set/reset flip-flop. The output from the flip-flop is a reconstruction of the FSK data which is not affected by temperature-related DC offsets and detector drift.
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申请公布号 |
US4568883(A) |
申请公布日期 |
1986.02.04 |
申请号 |
US19840592634 |
申请日期 |
1984.03.23 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
SHINDLEY, RICHARD P. |
分类号 |
H04L27/156;(IPC1-7):H03D3/04 |
主分类号 |
H04L27/156 |
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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