US Patent Issued to Apple on Jan. 20 for "Combined IQ-polar radio frequency digital-to-analog-converter (RFDAC) systems and methods" (California Inventors)

ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,572, issued on Jan. 20, was assigned to Apple Inc. (Cupertino, Calif.).

"Combined IQ-polar radio frequency digital-to-analog-converter (RFDAC) systems and methods" was invented by Bevin G Perumana (Anaheim, Calif.), Saikat Sarkar (Irvine, Calif.) and Tirdad Sowlati (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A combined radio frequency (RF) digital-to-analog converter (DAC) may include an in-phase and quadrature-(IQ-) based DAC to generate a phase component of an output RF signal and a polar-based DAC to generate an amplitude component of the RF signal. Additionally, modulation circuitry may combine the amplitude component and the ...