Patent ID: 8855231

Claim:
A method for conditioning a signal in a polar transmitter, comprising: receiving an input signal having a rectangular form; determining whether to limit differential phase and/or adjust a Peak to Average Power Ratio (PAPR) of the input signal; converting the input signal having the rectangular form to an input signal having a polar form; limiting a differential phase of the input signal having the polar form to generate a modified signal having a polar form, and/or adjusting the peak to average power ratio, based on the determining; converting the modified signal having the polar form to a rectangular form signal; determining a residual signal based at least in part on the input signal having the rectangular form and the modified signal having rectangular form; filtering the residual signal to reduce high-frequency components to obtain a filtered signal; and adding the filtered signal to the input signal having the rectangular form to produce an output signal with a limited differential phase and/or reduced PAPR.