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:
Sep. 07, 1976
Filed:
Dec. 23, 1974
Edward S Caragliano, Poughkeepsie, NY (US);
Howard H Nick, LaGrangeville, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A directional coupler arrangement is provided in which a plurality of directional couplers are cascaded by connecting the thru terminal of each coupler to the input terminal of the succeeding coupler and connecting the output terminal of each coupler except the last to the forward terminal of the succeeding coupler so that the desired backward coupled signal of each of the couplers arrive simultaneously at the output terminal of the last coupler so as to be additive and thereby produce an enhanced backward coupled signal. The forward coupled signals arrive at the forward terminal of the first coupler either out of coincidence or in a subtractive mode thereby minimizing the forward coupled signal.