Multi-phase PSK modulation apparatus

Details Multi-phase PSK modulation apparatus Multi-phase PSK modulation apparatus

1988-07-29

1990-05-29

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 67, 332107, 332103, H04L 2549

Patent

active

049301411

ABSTRACT:
A multi-phase PSK modulation apparatus includes a multi-phase PSK modulator and baseband signal modification circuitry which modifies the baseband signal in accordance with modulation frequencies to correct all or a portion of any offset error, amplitude error and orthogonality errors. The baseband signal modification circuitry permits error correction over a wide range of frequencies using a rather simple arrangement. In addition, spurious outputs, volume and cost of the apparatus are reduced.

REFERENCES:
patent: 4462001 (1984-07-01), Girard
patent: 4483009 (1984-11-01), Honda et al.
patent: 4736170 (1988-04-01), Wu et al.

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