Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 9, 2009
Patent Application Number
11379841
Date Filed
April 24, 2006
Patent Primary Examiner
Patent abstract
The invention relates to a dual band frequency synthesizer for generating either a first output frequency fhigh or a second output frequency flow, where fhigh=2 flow, comprising an oscillator circuit for generating at its output a frequency fVCO=(fhigh+flow)/2, a divide by three (3) circuit, coupled to the output of the oscillator circuit, for generating at its output an offset frequency fDB3=fVCO/3, and a double quadrature mixer circuit, coupled to the output of the oscillator circuit and to the output of the divide by three circuit, for generating either the first output frequency fhigh=fVCO+fDB3 or the second output the frequency flow=fVCO−fDB3.
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