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:
Dec. 24, 1985
Filed:
Feb. 28, 1985
Paul J Meier, Westbury, NY (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A compact step tuned filter (30, FIG. 6), is provided for passing two or more widely separated microwave frequencies and providing high rejection to signals below the passband, and is particularly useful in miniaturized light weight airborne step tuned mixers and the like. The filter includes input and output sets (39-40, 41-42) of parallel coupled transmission lines providing lumped element capacitors at the lower frequency and matched transmission lines at the higher frequency, and a central transmission line connected between the input and output sets of coupled lines and providing a resonator between the lumped element capacitors at the lower frequency and a matched transmission line at the higher frequency.