The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2024
Filed:
May. 07, 2021
Nisshinbo Micro Devices Inc., Tokyo, JP;
Tokyo Institute of Technology, Tokyo, JP;
Alps Alpine Co., Ltd., Tokyo, JP;
Hiroki Sato, Tokyo, JP;
Masayuki Sato, Tokyo, JP;
Noboru Ishihara, Tokyo, JP;
Shinji Murata, Tokyo, JP;
NISSHINBO MICRO DEVICES INC., Tokyo, JP;
TOKYO INSTITUTE OF TECHNOLOGY, Tokyo, JP;
ALPS ALPINE CO., LTD., Tokyo, JP;
Abstract
A sensor interface circuit includes: an RF switch having a control node; a bias circuit electrically connected to the control node and applying, to the control node, a voltage at a first level or a second level corresponding to a linear region of a reflection characteristic; a first variable oscillation circuit electrically connectable to a first sensor; a second variable oscillation circuit electrically connectable to a second sensor; and a difference circuit electrically connected between the first variable oscillation circuit and the bias circuit, and between the second variable oscillation circuit and the bias circuit.