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. 19, 1980
Filed:
Apr. 27, 1979
Richard V Snyder, Ringwood, NJ (US);
Premier Microwave Corporation, Port Chester, NY (US);
Abstract
A dual mode band rejection filter for attenuating electromagnetic energy in a predetermined stop band having at least one resonant cavity with a pair of orthogonally related modes of propagation. The energy is propagated through a waveguide coupled to ports in the cavity. The waveguide has an input section coupled to a first cavity port, an intermediate section coupled between the first and second ports of the cavity and an output section coupled to the second port. The length of the intermediate section provides a predetermined phase shift between the first and second ports. The filter may include another dual mode resonant cavity coupled to the waveguide by additional waveguide sections.