Patent ID: 8355465

Claim:
A method of generating a first drive signal and a second drive signal to provide a modulated radio frequency (RF) signal, the method comprising: receiving phase modulation (PM) information; receiving amplitude modulation (AM) information; and generating two phase modulated signals to form a first drive signal and a second drive signal for being combined, a combination of the first drive signal and the second drive signal forming a signal for driving a load, the load when driven resulting in an AM/PM radio frequency signal, generating the two phase modulated signals including: generating a phase modulated carrier signal, the phase modulation relating to the phase modulation information; splitting the phase modulated carrier signal into a first PM signal and a second PM signal, the first and second PM signals approximately same; and phase modulating each of the first and second PM signals with approximately opposite phase variations to result in the first and second drive signals, a difference in phase between the first and second drive signals relating to the amplitude modulation information.