ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,344, issued on Jan. 20, was assigned to DENSO Corp. (Kariya, Japan).
"Antenna device and communication device" was invented by Daiju Ushikoshi (Nisshin, Japan), Takuya Yamashita (Kariya, Japan) and Shiro Koide (Kariya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An antenna device includes a ground plate, a line feeding element provided with a feeding point, first and second mushroom cells. Each mushroom cell includes a counter conductor plate disposed at a predetermined interval from the ground plate, and a short circuit portion electrically connecting the counter conductor plate and the ground plate. Each mushroom cell causes parallel reso...