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:
Jun. 01, 2010
Filed:
Jul. 19, 2005
Wolfdietrich Georg Kasperkovitz, Waalre, NL;
Wolfdietrich Georg Kasperkovitz, Waalre, NL;
Semiconductor Ideas to Market (ITOM) BV, Breda, NL;
Abstract
Controllable operational transconductance power amplifier (controllable power OTA) including an input stage receiving a differential input signal (Ovin) and deriving therefrom first (i) and second (i) low power current signals being coupled to first (ccs) and second (ccs) current controlled output current sources being arranged in class B push pull configuration. To obtain an effective gain control while securing power efficiency and linearity, the overall gain of the power OTA is controlled by varying the gain or transconductance of the input stage (c) and by the use of means for bi-directionally rectifying said first (i) and second (io) low power current signals and providing in mutual alternation power amplification of said first (i) and second (i) low power current signals into first (I) and second (Io) mutually exclusive high power current output signals, which are supplied through a current summer to a current output (I) of said linear power amplifier.