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.

Date of Patent:
Dec. 03, 2019

Filed:

Nov. 13, 2014
Applicant:

Bbpos Limited, Tsuen Wan, HK;

Inventors:

Hwai Sian Tsai, Hong Kong, HK;

Peter Choi, Tsuen Wan, HK;

Chi Wah Lo, Hong Kong, HK;

Assignee:

BBPOS LIMITED, Tsuen Wan, HK;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/80 (2018.01); H04B 5/00 (2006.01);
U.S. Cl.
CPC ...
H04W 4/80 (2018.02); H04B 5/0031 (2013.01); H04B 5/0087 (2013.01);
Abstract

A system for an antenna for near field communications (NFC), said antenna comprising a primary loop with a primary current to produce a magnetic field; one or more secondary loops with one or more secondary currents; wherein by adjusting one or more variables associated with said one or more secondary loops, said magnetic field is modified to ensure antenna operation within a defined operating range.


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