Frequency shaping stream signal processor

Details Frequency shaping stream signal processor Frequency shaping stream signal processor

2008-03-25

2008-03-25

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S295000

Reexamination Certificate

active

07349491

ABSTRACT:
A signal processor has a plurality of channels, each channel configured to receive an input signal stream, to reduce the signal to a direct current signal and to process the signal according to the stream signal. Each channel also has a plurality of low pass filters configured to filter in-phase and quadrature-phase modulator outputs with a first low pass filter and to filter a reference quadrature signals, and a gain control configured to re-modulate gain adjusted output signals with the filtered quadrature signals. The processor further includes an inverter to invert the in-phase filtered reference signal and means to multiply the quadrature gain adjusted output signal.

REFERENCES:
patent: 4034305 (1977-07-01), Sato
patent: 5801654 (1998-09-01), Traylor

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