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:
Feb. 12, 2002
Filed:
Feb. 01, 2000
David Edwin Proctor, Honeydew, ZA;
Christopher Gordon Gervase Turner, Halfway House, ZA;
Andries Petrus Cronje Fourie, Johannesburg, ZA;
Supersensor (Proprietary) Limited, Goodwood, ZA;
Abstract
A dipole antenna comprises a loop as a first pole and an appendage comprising a strip terminating in a pad as a second pole. The circumference of the loop is in the order of one half-wavelength of an operating frequency and an effective length of the appendage is at least 0.15 times the wavelength. The dipole antenna is shorter than conventional half-wavelength dipole antennas, has a better frequency response and the antenna impedance Z is dependent on the position of a feedpoint in the loop . The antenna may be used with transponders for electronic radio frequency identification systems.