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:
Mar. 03, 2015
Filed:
Oct. 01, 2013
Applicant:
Broadcom Europe Limited, Cambridge, GB;
Inventor:
Paul Butler, Cambridge, GB;
Assignee:
Broadcom Europe Limited, Cambridge, GB;
Primary Examiner:
Int. Cl.
CPC ...
H04B 5/00 (2006.01); G06K 19/07 (2006.01); G11C 5/14 (2006.01); H04B 1/16 (2006.01);
U.S. Cl.
CPC ...
H04B 5/0037 (2013.01); G06K 19/0701 (2013.01); G06K 19/0723 (2013.01); G11C 5/142 (2013.01); H04B 1/1607 (2013.01); H04B 5/0018 (2013.01); H04B 5/0081 (2013.01);
Abstract
A near field RF communicator has an antenna circuit to couple with the H field of an RF magnetic field and a power supply deriver to derive a rectified auxiliary power supply from the received magnetic field. Rectification may be performed using an actively switched rectifier having a passive mode of operation. A sub regulation system is provided to regulate the auxiliary power supply to inhibit the possibility of temporally varying power requirements of the near field RF communicator or its host causing an apparent load modulation of a signal that is transmitted or received by the communicator.