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Level limitation in high frequency receiver for frequency modulation or frequency shift keying modulation has amplifier limiter log amplifier and forwards gain control circuit
Level limitation in high frequency receiver for frequency modulation or frequency shift keying modulation has amplifier limiter log amplifier and forwards gain control circuit
The limiting stage in a high-frequency receiver for frequency or FSK modulation comprises a high-frequency amplifier (2), signal limiter (3), a logarithmic amplifier (4) and a simple forward gain control (5) for additional damping. The circuit prevents an excess level being fed to subsequent stages, e.g. a filter or A/D converter, after frequency conversion.
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