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:
Aug. 31, 2004
Filed:
Mar. 10, 2003
Christopher Wayne Peters, Cherry Hill, NJ (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A low/band/high pass filter includes first and second plasmas, each with a path for the flow of electromagnetic energy at frequencies above the plasma frequency. A path for the flow of electromagnetic energy is coupled to the second port of the first plasma and to a first port of the second plasma. The plasma frequency of the second plasma is greater than that of the first plasma. Energy below the plasma frequency of the first plasma is reflected from the first port of the first plasma, and energy above the plasma frequency of the second plasma propagates to the second plasma. That energy above the plasma frequency of the first plasma but below the plasma frequency of the second plasma reflects from the second plasma and is coupled out of the system. That energy at a frequency above the second plasma frequency propagates through the second plasma.