Method and apparatus for providing a biphase modulated signal ha

Details Method and apparatus for providing a biphase modulated signal ha Method and apparatus for providing a biphase modulated signal ha

1991-12-12

1993-05-25

Mis, David

Modulators

Phase shift keying modulator or quadrature amplitude modulator

Including logic element

332103, 375 55, 375 67, H03C 300, H03K 704, H04L 2720

Patent

active

052143961

ABSTRACT:
A biphase shift keying modulation circuit includes: a clock pulse generator for generating system clock pulses; a random data generating unit for dividing the frequency of the system clock pulses to generate random digital data in synchronism with the divided clock pulses; a data conversion circuit for sequentially shifting the random digital data in synchronism with the system clock pulses and generating parallel shifted data which is multiplied by given resistive values and added to each other to provide an in-phase signal component, and for processing the shifted data and random digital data to provide a quadrature-phase signal component without a direct current component; a carrier wave oscillator for generating a carrier wave signal; and a modulating circuit for modulating the in-phase signal component and quadrature-phase signal component with the carrier wave signal and ninety degree phase-shifted carrier wave, respectively, in which the modulated signals are added to provide a phase modulated signal of flat envelope characteristics.

REFERENCES:
patent: 4736389 (1988-04-01), Debus, Jr. et al.
patent: 5049839 (1991-09-01), Jun

Affiliated with

Also associated with

Rating

Method and apparatus for providing a biphase modulated signal ha does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for providing a biphase modulated signal ha, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing a biphase modulated signal ha will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-900220