1976-01-06
1977-07-19
Olms, Douglas W.
H04H 500
Patent
active
040370569
ABSTRACT:
An FM multiplex demodulator circuit comprises, within a semiconductor integrated circuit, a double balance type synchronous detection circuit which includes load elements formed within the semiconductor integrated circuit, a pair of negative feedback type differential amplifier circuits which amplify a pair of detection outputs from the detection circuit and also perform de-emphasis thereof, respectively, and a pair of emitter follower circuits which are connected to outputs of the negative feedback type differential amplifier circuits, respectively.
REFERENCES:
patent: 3573382 (1971-04-01), Feit et al.
patent: 3617641 (1971-11-01), Feit et al.
patent: 3752934 (1973-08-01), Nakamura et al.
patent: 3823268 (1974-07-01), Modafferi
patent: 3842211 (1974-10-01), Metro
Ienaka Masanori
Suzuki Yukio
Hitachi , Ltd.
Olms Douglas W.
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