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:
Oct. 19, 2010
Filed:
Sep. 08, 2005
Thibault Philippe Paul Kervaon, Colombelles, FR;
Sebastien Amiot, Bieville-Beuville, FR;
Thibault Philippe Paul Kervaon, Colombelles, FR;
Sebastien Amiot, Bieville-Beuville, FR;
NXP B.V., Eindhoven, NL;
Abstract
A controllable-gain circuit (TI, Rt, TS, . . . , TS) provides a first and a second pair of complementary gain-controlled signals (Ip, Ip; Ip, Ip) in response to an input signal (RFI). In each pair, one gain-controlled signal (Ip, Ip) is the input signal amplified with a gain G comprised in a range between a minimum gain Gmin and a maximum gain Gmax. The other gain-controlled signal (Ip, Ip) is the input signal amplified with complementary gain Gmax-G. A fixed-gain output circuit (Rfg, Nfg) makes a weighed sum (Ip*Rfg+Ip*Rfg) of one and the other gain-controlled signal in the first pair of complementary gain-controlled signals. The respective weighing factors for one and the other gain-controlled signal are substantially similar (Rfg). A controllable-gain output circuit (Rlg, Rhg, Nlg, Nhg) makes a weighed sum (Ip*Rlg+Ip*(Rlg+Rhg)) of one and the other gaincontrolled signal in the second pair of complementary gain-controlled signals. The respective weighing factors for one and the other gain-controlled signal are substantially different (Rlg, Rlg+Rhg).