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:
Oct. 28, 1997
Filed:
Jan. 15, 1997
Frank E Mullen, No. Easton, MA (US);
William L Robbins, Newton Center, MA (US);
The Charles Stark Draper Laboratory, Cambridge, MA (US);
Abstract
The present invention provides an antenna including a relatively thin substantially planar electrically conductive first layer substantially lying in a first plane, and a relatively thin substantially planar electrically conductive second layer substantially lying in a second plane. The first and second layers are disposed such that the first and second planes are substantially parallel and such that they are separated by a distance d. The second layer is smaller than and overlies the first layer and defines a first region extending between the second layer and a portion of the first layer underlying the second layer. The antenna further includes a first dielectric medium having a relatively high dielectric constant and disposed in the first region, and a second dielectric medium having a relatively low dielectric constant and disposed in a second region extending between the first layer and portions of the second plane overlying the first layer and excluding the first region.