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. 10, 2007
Filed:
Apr. 20, 2005
Carla Motta, Catania, IT;
Giovanni Girlando, Catania, IT;
Giuseppe Palmisano, San Giovanni La Punta, IT;
Carla Motta, Catania, IT;
Giovanni Girlando, Catania, IT;
Giuseppe Palmisano, San Giovanni La Punta, IT;
STMicroelectronics S.R.L., Agrate Brianza (MI), IT;
Abstract
A low noise amplifier includes a cascode device which includes at least a first and a second transistor having a terminal in common. The output terminal of the second transistor is the output terminal of the cascode device and is coupled to the output terminal of the amplifier. The amplifier includes a first circuit means suitable for the polarization of the second transistor. The first circuit means is positioned between a supply voltage and another terminal of the second transistor. The amplifier includes a second circuit means connected to the output terminal of the cascode device and is operative at a given frequency (ω). The first circuit means includes a first series of a resistance and a capacitance and the second means has a second series of a resistance and a capacitance. The first series is coupled between the other terminal of the second transistor and ground and the second series is coupled between the output terminal of the cascode device and ground. The values of the resistances of the first and of the second series are much lower than the module values of the respective capacitive impedances of said first and of said second series at said given frequency (ω).