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:
Jul. 19, 2016
Filed:
Nov. 09, 2011
Applicant:
Anthony Mcfarthing, Ely, GB;
Inventor:
Anthony McFarthing, Ely, GB;
Assignee:
Qualcomm Technologies International, Ltd., Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 5/00 (2006.01); H01Q 1/22 (2006.01); H03F 3/195 (2006.01); H03F 3/24 (2006.01); H03F 3/45 (2006.01); G06K 7/10 (2006.01);
U.S. Cl.
CPC ...
H01Q 1/2216 (2013.01); G06K 7/10158 (2013.01); H03F 3/195 (2013.01); H03F 3/245 (2013.01); H03F 3/45475 (2013.01); H04B 5/0062 (2013.01); H03F 2203/45631 (2013.01); H03F 2203/45641 (2013.01); H03F 2203/45686 (2013.01); H03F 2203/45702 (2013.01); H03F 2203/45726 (2013.01);
Abstract
The present application relates to a near field communications (NFC) reader having a power amplifier which has an output that connects to an input terminal of an antenna by means of an antenna filter made up of one or more series resistors and one or more series capacitors. The NFC reader includes means for adjusting the Q factor of the antenna so as to increase the available transmit bandwidth and/or improve the efficiency of the reader. The means for adjusting the Q factor of the antenna may be, for example, a variable resistive component or one or more switches.