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.

Date of Patent:
Jan. 26, 2016

Filed:

May. 03, 2012
Applicants:

François Belmas, Saze, FR;

Frédéric Hameau, Saint Nizier du Moucherotte, FR;

Inventors:

François Belmas, Saze, FR;

Frédéric Hameau, Saint Nizier du Moucherotte, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/45 (2006.01); H03G 3/30 (2006.01); H03F 3/68 (2006.01); H03F 3/193 (2006.01); H03G 3/00 (2006.01);
U.S. Cl.
CPC ...
H03F 3/68 (2013.01); H03F 3/193 (2013.01); H03F 3/45 (2013.01); H03F 3/45076 (2013.01); H03G 3/004 (2013.01);
Abstract

An amplification circuit including: an input for receiving an input voltage; an output for exhibiting an output voltage; a primary amplifier configured to receive the input voltage from the input, receive a primary control voltage, first amplify the input voltage by a primary gain dependent on the control voltage, the output voltage corresponding to the first amplified input voltage, and supply the output voltage to the output; and a secondary amplifier configured to receive the input voltage from the input, second amplify the input voltage by a secondary gain, the primary control voltage corresponding to the second amplified input voltage, and supply the primary control voltage to the primary amplifier. The secondary amplifier has in operation an input admittance of at least 1 millisiemens.


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