ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,924, issued on Jan. 13, was assigned to Qorvo US Inc. (Greensboro, N.C.).
"Envelope tracking radio frequency front-end circuit" was invented by Nadim Khlat (Cugnaux, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "An envelope tracking (ET) radio frequency (RF) front-end circuit receives a single tracking signal (e.g., Vramp) from a baseband transceiver and generates a plurality of control signals (Vcc). The control signals are created by a multiple control signal generator circuit based on a calculated load estimate for each relevant power amplifier. The load estimate may be calculated from a sensed current and voltage. By providing control si...