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. 17, 2006
Filed:
Aug. 09, 2004
Cornelis Frederik Du Toit, Ellicott City, MD (US);
Cornelis Frederik du Toit, Ellicott City, MD (US);
Paratek Microwave, Inc., Columbia, MD (US);
Abstract
An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at least two conductors overlaying at least a portion of the tunable dielectric layer, the at least two conductors positioned so as to form a slot-line topology. In an embodiment of the present invention the slot-line may be between 2 μm and 5 μm wide and the tunable dielectric layer may be between 0.3 μm to 1.5 μm thick. Further, the slot-line topology may be a uniform slot-line topology throughout the length of the at least two conductors and the slot-line topology may have an edge ratio defined by r=L/(L+L). The edge ratio may be optimized for minimizing metal loss and minimizing dielectric loss for a given phase shifter length. In an embodiment of the present invention the value of r may be between 0.1 and 0.2.