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:
Nov. 30, 2004
Filed:
Jun. 12, 2002
William Johnson Chappell, Lafayette, IN (US);
Linda P. B. Katehi, Zionsville, IN (US);
Matthew Patrick Little, Natick, MA (US);
The Regents of the University Michigan, Ann Arbor, MI (US);
Abstract
The concept of electromagnetic bandgaps (EBG) is used to develop a high quality filter that can be integrated monolithically with other components due to a reduced height, planar design. Coupling adjacent defect elements in a periodic lattice creates a filter characterized by ease of fabrication, high-Q performance, high port isolation and integrability to planar or 3-D circuit architectures. The filter proof of concept has been demonstrated in a metallo-dielectric lattice. The measured and simulated results of 2-, 3- and 6-pole filters are presented at 10.7 GHz, along with the equivalent circuits.