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:
Sep. 25, 2012
Filed:
Mar. 02, 2009
Applicants:
Kai Leung Yung, Hong Kong, CN;
Ching Yuen Chan, Hong Kong, CN;
David Ki Wai Cheng, Hong Kong, CN;
Inventors:
Assignee:
The Hong Kong Polytechnic University, Kowloon, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A chipless microwave identification tag () comprising: a dielectric substrate (); and a plurality of antenna elements () made from a conductive material and disposed on at least one surface () of the dielectric substrate (); wherein when the tag () is excited by an incident microwave signal (), a reflected wave () to identify the tag () is generated with a number of specific frequencies altered by microwave resonation of the antenna elements ().