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. 22, 2009
Filed:
Oct. 19, 2006
Philippe Cathelin, Laval, FR;
Jean-charles Grasset, Moirans, FR;
Philippe Cathelin, Laval, FR;
Jean-Charles Grasset, Moirans, FR;
STMicroelectronics SA, Montrouge, FR;
Abstract
A radio frequency stage comprises an analog multiplier cell, and an analog current routing cell coupled thereto. The analog multiplier cell includes an input for receiving an input current having a DC component and a radio frequency dynamic component, and a controllable current source for delivering a DC control current. A current multiplication circuit generates an output current having a radio frequency dynamic component equal to a product of the dynamic component of the input current times a multiplier coefficient dependent on a ratio between a value proportional to that of the DC control current and a value of the DC component of the input current. An output delivers the output current. The analog current routing cell includes an input coupled to the output of the analog multiplier cell. A controllable voltage source delivers a control voltage and a routing circuit for routing a part of the input current to the output of the analog routing cell as a function of the value of the control voltage.