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:
Jan. 09, 2001
Filed:
Jan. 06, 1999
Jean louis Cazaux, Toulouse, FR;
R{acute over (e)}gis Barbaste, Venerque, FR;
Bernard Cogo, Montrabe, FR;
Alcatel, Paris, FR;
Abstract
A digital device for controlling the amplitude and the phase of a radio frequency signal includes a variable digital attenuator, a variable digital phase-shifter, and a distributor having one input and two outputs for dividing the radio frequency signal into a first signal part and a second signal part. A digital amplitude control first channel connected to an output of the distributor includes the variable digital attenuator for controlling the amplitude of the first signal part. A digital phase control second channel connected to the other output of the distributor in parallel with the first digital control channel includes the variable digital phase-shifter for controlling the phase of the second signal part. A recombiner has one output and two inputs respectively connected to the outputs of the two digital control channels and recombines the controlled two signal parts. Such devices include predistortion linearizers.