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:
Apr. 14, 2009
Filed:
Oct. 11, 2005
Benoit Butaye, Saint Martin d'Heres, FR;
Luc Garcia, Saint Paul de Varces, FR;
Benoit Butaye, Saint Martin d'Heres, FR;
Luc Garcia, Saint Paul de Varces, FR;
STMicroelectronics SA, Montrouge, FR;
Abstract
The present invention includes a mixer circuit integrating a voltage-to-currrent conversion in the same stage. A mixer deviceof a transmission system comprises a pair of transistorsandforming a differential circuit having two differential inputs receiving a carrier V, two differential current outputs delivering a differential output current and a common current output whose current is equal to the sum of the differential output currents; a current-to-voltage conversion elementcoupled to the common current output of the pair of transistors; an amplifierhaving a positive input receiving the modulating signal, a negative feedback input coupled to the current-to-voltage conversion element, and an output coupled to each of the differential inputs of the pair of transistors.