Frequency discriminator circuit

Details Frequency discriminator circuit Frequency discriminator circuit

1977-10-25

1978-10-10

Grimm, Siegfried H.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

307233R, 329137, 329140, 329145, H03D 322

Patent

active

041199197

ABSTRACT:
A frequency discriminator circuit suitable for fabrication in a semiconductor integrated circuit has an input terminal connected to an input amplifier for producing two signals of opposite phase which are, respectively, applied to the base electrodes of two common-collector connected transistors. One of the two signals is also applied through a phase shifter to the emitters of both transistors. An output differential amplifier has its inputs connected, respectively, to the emitters of the two transistors to produce a frequency-discriminated output signal.

REFERENCES:
patent: 3586986 (1971-06-01), Martens et al.

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