Angle-modulated signal transmission system

Details Angle-modulated signal transmission system Angle-modulated signal transmission system

1975-06-24

1977-01-11

Olms, Douglas W.

1791001TD, 1791004ST, 179 1GQ, H04R 500

Patent

active

040028402

ABSTRACT:
An angle-modulated signal transmission system comprises first and second filters for filtering signal components from first and second modulation signals supplied thereto. The filters eliminate a certain frequency band which tends to cause interference distortion in transmitted and demodulated signals due to crosstalk produced between first and second angle-modulated signal transmission paths. A mixer mixes the output signals of the first and second filters, with a certain mixing ratio. First and second adders add the signal components of a certain frequency band of the first and second modulation signals, thus mixed and processed by the mixer and the signal components of a frequency band other than the certain band of the first and second modulation signals. First and second angle modulators modulate carriers responsive to the resulting output signals of the first and second adders and send the output angle-modulated signals thereof respectively to the transmission paths.

REFERENCES:
patent: 3686471 (1972-08-01), Takahashi
patent: 3732375 (1973-05-01), Kuribayashi
patent: 3803367 (1974-04-01), Takahashi
patent: 3839602 (1974-10-01), Takahashi
patent: 3896271 (1975-07-01), Ishigaki et al.

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