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:
Mar. 17, 2009
Filed:
Dec. 01, 2004
Wolfdietrich Georg Kasperkovitz, Waalre, NL;
Wolfdietrich Georg Kasperkovitz, Waalre, NL;
Abstract
Multiplier device comprising first to nmultipliers Mto Mfor multiplying a carrier modulated information signal with first to nmutually phase shifted and identical, substantially square wave mixing signals MSto MSwith 50% duty cycle. In order to eliminate fifth or higher order interferences from the output of said multiplier device according to the invention, n is greater than 2, outputs of said multipliers Mto Mare respectively coupled through weighting circuits Wto Wwith respective fixed weighting factors WFto WFto an adder circuit, said mixing signals MSto MShaving respective phase angles φcorresponding to φ=i*Δφ, said weighting factors WFcorresponding to the sine value of said respective phase angles φ=i*Δφ with Δφ being the mutual phase difference between each two phase consecutive mixing signals corresponding to π/(n+1) and i varying from 1 to n.