Patent ID: 7095796

Claim:
A radio transmitter comprises: intermediate frequency stage operably coupled to up-convert frequency of a baseband digital signal into an N-bit signal at an intermediate frequency; signal to pulse conversion module operably coupled to convert the N-bit signal at the intermediate frequency into an M-bit signal at a radio frequency, wherein N is greater than M, and wherein the signal to pulse conversion module includes: rate converter operably coupled to increase rate of the N-bit signal at the intermediate frequency to produce a rate increased K-bit signal at the intermediate frequency; pulse density modulator operably coupled to convert the rate increased K-bit signal at the intermediate frequency into an J-bit pulse density signal at the intermediate frequency; second rate converter operably coupled to increase rate of the J-bit pulse density signal at the intermediate frequency to produce a rate increased L-bit signal at the intermediate frequency; and radio frequency module operably coupled to increase frequency of the rate increased L-bit signal at the intermediate frequency into the M-bit signal at the radio frequency; and power amplifier operably coupled to amplify the M-bit signal at the radio frequency.