ALEXANDRIA, Va., June 12 -- United States Patent no. 12,299,509, issued on May 13, was assigned to ANABRID GMBH (Berlin).
"Highly linear multiplier" was invented by Lars Heimann (Berlin), Bernd Ulmann (Bad Schwalbach, Germany) and Sven Koeppel (Munster, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a linearized multiplier configured to produce an output current representing a product of a first input voltage and a second input voltage, comprising: a first transconductance stage which is configured to input the first input voltage and to output a first pair of differential currents, wherein the first transconductance stage comprises a negative feedback network, at least one second t...