发明名称 |
WIDEBAND SQUARE-LAW DETECTOR HAVING A TRIANGULAR FREQUENCY CHARACTERISTIC AS WELL AS A TRANSMISSION SYSTEM AND A RECEIVER INCLUDING SUCH A DETECTOR |
摘要 |
A square-law detector which provides a square-law relationship between the amplitude of the input signal and the amplitude of the output signal, and having a frequency transfer characteristic which is a continuous function consisting of a rising portion up to a predetermined frequency followed by a falling portion following the predetermined frequency. Thus the frequency characteristic is generally triangular, which is advantageous in that the output signal as function of frequency has a much more uniform, i.e. trapezoidal, pattern than is obtained with a conventional detector having a substantially rectangular frequency transfer characteristic. This is especially important when the detector is used in a receiver for FSK modulated signals having a large frequency deviation, since the modulated signal spectrum then has two relatively discrete power peaks. |
申请公布号 |
WO9522884(A3) |
申请公布日期 |
1995.10.12 |
申请号 |
WO1995IB00087 |
申请日期 |
1995.02.09 |
申请人 |
PHILIPS ELECTRONICS N.V.;PHILIPS NORDEN AB |
发明人 |
TOMESEN, MARKUS, THEODORUS;HOOIJMANS, PIETER, WERNER |
分类号 |
H03D1/10;H04B10/61;H04L27/14 |
主分类号 |
H03D1/10 |
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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