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. 29, 1997
Filed:
May. 04, 1995
Arthur R Ahrens, Boynton Beach, FL (US);
Chung Tong, Boynton Beach, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An antenna (10) is set forth which may be used in, among other devices, a communications device, particularly a portable communications device. The antenna (10) includes a dielectric substrate (25) having first and second opposed sides. A ground plane (20) is disposed at the second side of the dielectric substrate and is in electrical contact therewith. An electrically conductive patch element (30) is supported by the first side of the dielectric substrate (25). The patch element (30) includes a feed point (40) at which RF energy is supplied to or received from the patch element (30). A plated aperture (70) is disposed through and electrically connected to the patch element (30) and extends into the dielectric substrate (25). The plated aperture (70) is electrically insulated from the ground plane (20) and offset from the feed point (40). The addition of the plated aperture (70) to the antenna (10) increases the electrical length of the antenna through reactive loading. The antenna thus resonates at a frequency that is lower than the same antenna configuration without the plated aperture.