Digital modulator with digital power control circuit

Details Digital modulator with digital power control circuit Digital modulator with digital power control circuit

1992-10-22

1994-03-08

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

332103, H04L 2503

Patent

active

052934071

ABSTRACT:
A digital modulator comprises a power control circuit for producing a digital power control signal, first and second digital multipliers for multiplying digital signals having orthogonal phase relationships with the digital power control signal, and first and second digital-to-analog (D/A) converters for converting digital output signals from the first and second multipliers into analog signals. First and second low-pass filters are connected to outputs of the D/A converters, respectively, to filter out high frequency components. An orthogonal modulator is provided for mixing orthogonal phase carriers with the outputs of the first and second low-pass filters to produce first and second orthogonally modulated signals and combining the modulated signals to produce a transmit signal, which is amplified for transmission.

REFERENCES:
patent: 4860316 (1989-08-01), Takenaka et al.
patent: 4881049 (1989-11-01), Yagi
patent: 5012208 (1991-04-01), Makinen et al.
patent: 5093637 (1992-03-01), Isota et al.
patent: 5172394 (1992-12-01), Kuster et al.

Affiliated with

Also associated with

Rating

Digital modulator with digital power control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital modulator with digital power control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital modulator with digital power control circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-158759