Superheterodyne receiver

Details Superheterodyne receiver Superheterodyne receiver

1984-04-13

1987-02-10

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 23, 358188, 455109, H04N 964

Patent

active

046426752

ABSTRACT:
A superheterodyne receiver using the "Third Method" is equipped for reception of color-television programs. The oscillator frequency for the first mixer is located exactly in the middle between the picture carrier and the chrominance subcarrier, so that the picture carrier and the chrominance subcarrier coincide at the intermediate frequency. The Nyquist slope for the picture carrier is made steeper, so that one loss-pass filter slope determines the Nyquist slope for the picture carrier and the chrominance subcarrier and the adjacent-channel selectivity on both sides in the RF spectrum.

REFERENCES:
patent: 4193035 (1980-03-01), Berger
patent: 4310920 (1982-01-01), Hayes

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