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:
Jul. 15, 2008
Filed:
Mar. 17, 2006
Kohei Fujii, San Jose, CA (US);
Michael L. Frank, Los Gatos, CA (US);
Kohei Fujii, San Jose, CA (US);
Michael L. Frank, Los Gatos, CA (US);
Avago Technologies Wireless IP Pte Ltd, Singapore, SG;
Abstract
An integrated circuit including a distributed amplifier is disclosed. The integrated circuit includes a plurality of amplification stages, each stage connected to an input signal and an output signal. At least one amplification stage includes an amplification transistor such as a field effect transistor (FET) having a gate, a source, and a drain, the gate connected to the input signal and a feedback path between the drain and the gate. The feedback path is implemented with another FET having a gate, a source, and a drain; its gate is connected to a control signal; its drain is connected to the drain of the amplification FET; and its source is connected to the gate of the amplification FET. The feedback path provides variable resistive feedback and allows the amplification FET to operate at its linear response portion of its characteristic curve even when its gain is controlled by a control signal.