Patent ID: 8831159
Filing Date: 2014-09-09
Classification: H03C,H03F,H04L

Abstract:
1. A polar modulation circuit, comprising: an amplitude conversion component configured to generate a high frequency amplitude modulated signal having a substantially zero amplitude at a switching point time that corresponds to a symbol transition causing a phase discontinuity in a phase modulated baseband signal, and further configured to generate a control signal at the switching point time; and wherein the amplitude conversion component is configured to generate the high frequency amplitude modulated signal by interpolating a plurality of amplitude modulated baseband signal samples to generate a data point having the substantially zero amplitude at the switching point time, wherein the switching point time is temporally located between a first time that a first amplitude modulated baseband signal sample is taken and a second time when a second amplitude modulated baseband signal sample is taken, and wherein the symbol transition comprises a phase shift of 180° in a phase modulated baseband signal occurring between the first and second time.