| 发明名称 |
FM DEMODULATION CIRCUIT |
| 摘要 |
A F.M. demodulation circuit can be rendered insensitive to amplitude, level and waveform variations of the frequency-modulated carrier signal by using a frequency-demodulator (33,37) tuned to half the frequency and preceded by a divide-by-two divider (21). |
| 申请公布号 |
DE3474387(D1) |
申请公布日期 |
1988.11.03 |
| 申请号 |
DE19843474387 |
申请日期 |
1984.07.04 |
| 申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
BOULAND, MAURICE;VAN GURP, WILHELMUS ADRIANUS JOHANNES;ZWIJSEN, WILHELMUS ANTONIUS JOSEPH MARIE |
| 分类号 |
H03D3/06;H03D3/00;H04N9/64;H04N9/66;H04N11/18;(IPC1-7):H03D3/00 |
主分类号 |
H03D3/06 |
| 代理机构 |
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代理人 |
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