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:
Nov. 14, 2006
Filed:
Apr. 21, 2004
Applicants:
Damian Costa, San Diego, CA (US);
Shahram Mahdavi, San Diego, CA (US);
John Groe, Poway, CA (US);
Inventors:
Assignee:
Sequoia Communications, San Diego, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bias voltage circuit with ultra low output impedance. The circuit incorporates feedback to reduce the output impedance at both low and RF frequencies. The bias circuit outputs a bias signal for biasing an amplifier. The bias circuit includes an input stage that receives an input signal and produces the bias signal at an output terminal that is coupled to a gain stage. The bias circuit also includes a load coupled to the input stage at a first terminal, and a feedback circuit coupled between the first terminal and the gain stage.