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:
Jan. 31, 2017
Filed:
Mar. 05, 2014
Ken Gudan, Sunnyvale, CA (US);
Sergey Chemishkian, San Jose, CA (US);
Matthew S. Reynolds, Seattle, WA (US);
Stewart Thomas, Raleigh, NC (US);
Joshua Ensworth, Seattle, WA (US);
Ken Gudan, Sunnyvale, CA (US);
Sergey Chemishkian, San Jose, CA (US);
Matthew S. Reynolds, Seattle, WA (US);
Stewart Thomas, Raleigh, NC (US);
Joshua Ensworth, Seattle, WA (US);
Ricoh Co., Ltd., Tokyo, JP;
Abstract
A method and apparatus is disclosed herein for harvesting ambient energy. In one embodiment, an energy harvester comprises: a first RF rectifier to output a first voltage determined by rectified RF energy in response to received RF energy; a first energy reservoir coupled to the first RF rectifier to store energy at the first voltage; a DC/DC converter coupled to the first energy reservoir to convert the first voltage to a second voltage; a second reservoir coupled to the DC/DC converter to store energy at the second voltage, the second voltage being greater than the first voltage; and a third reservoir coupled to the second reservoir to receive energy transferred from the second reservoir periodically.