ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,655, issued on April 15, was assigned to REALTEK SEMICONDUCTOR CORP. (Hsinchu, Taiwan).
"Self-loopback radio transmitter" was invented by Chia-Liang (Leon) Lin (Fremont, Calif.) and Ting-Hsu Chien (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A self-loopback radio transmitter having a transmitter with a modulator configured to up-convert a first baseband signal into a first RF (radio frequency) signal in accordance with a first LO (local oscillator) signal, and a power amplifier configured to receive the first RF signal and output a second RF signal to be emitted by an antenna and a third RF signal to be looped back, wherein the th...