ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,394,882, issued on Aug. 19, was assigned to CANON K.K. (Tokyo).
"Antenna device and camera system" was invented by Tatsuhito Goden (Tokyo), Yasushi Koyama (Kanagawa, Japan) and Noriyuki Kaifu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An antenna device includes an antenna array in which a plurality of antennas each including a negative differential resistance element and a resonance circuit are arranged, a voltage bias circuit which applies a voltage to the antenna array, a first shunt element which is connected between the antenna array and the voltage bias circuit in parallel relation to each of the negative differential resistance element ...