ALEXANDRIA, Va., June 16 -- United States Patent no. 12,309,018, issued on May 20, was assigned to REALTEK SEMICONDUCTOR Corp. (Hsinchu, Taiwan).

"Radio frequency circuit and calibration method therefor" was invented by Sie-Siou Jhang Jian (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of calibrating a radio frequency (RF) circuit that includes an in-phase path (I-path) and a quadrature-phase path (Q-path) is provided. The I-path includes a first modulator and a first component, and the Q-path includes a second modulator and a second component. The modulators and the components respectively include a current DAC (IDAC). The calibration method includes: calibrating DC offsets of the ...