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:
Mar. 23, 2010
Filed:
Feb. 09, 2006
Daniel F. Sievenpiper, Los Angeles, CA (US);
Thomas K. Dougherty, Playa Del Rey, CA (US);
John J. Drab, Santa Barbara, CA (US);
Solomon O. Robinson, Oxnard, CA (US);
Daniel F. Sievenpiper, Los Angeles, CA (US);
Thomas K. Dougherty, Playa Del Rey, CA (US);
John J. Drab, Santa Barbara, CA (US);
Solomon O. Robinson, Oxnard, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
A tunable impedance surface includes a varactor. The varactor comprises a bottom electrode formed on a surface of a substrate. First and second ferroelectric elements are on top of the bottom electrode and electrically connected to one another through the bottom electrode. A first top electrode is on top of and electrically connected to the first ferroelectric element and a second top electrode is on top of and electrically connected to the second ferroelectric element.