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US 8,264,276 B2Granted
Low-noise amplifier
AssigneeTexas Instruments Incorporated
InventorsDaquan Huang, Richard Gu
Life of this patent
Estimating the term…
Abstract
Traditionally, low-noise amplifiers or LNAs have been used in high frequency applications, but for very high frequency ranges (i.e., 60 GHz), building an LNA to meet performance needs has been difficult. Here, however, an LNA has been provided that operates well around 60 GHz. In particularly, this LNA is generally unconditionally stable, has a generally low noise factor or NF, and has a generally high gain around 60 GHz.
Claims10
An apparatus comprising:
- a first voltage rail;
- a second voltage rail;
- an input section that is coupled to the first and second voltage rails and that receives a differential input signal;
- and
- an output section having:
- a first transistor having a first passive electrode, a second passive electrode, and a control electrode, wherein the first passive electrode of the first transistor is coupled to the second voltage rail, and wherein the control electrode of the first transistor is coupled to the input section;
- a second transistor having a first passive electrode, a second passive electrode, and a control electrode, wherein the first passive electrode of the second transistor is coupled to the second voltage rail, and wherein the control electrode of the second transistor is coupled to the input section;
- a first inductor that is coupled to the second passive electrode of the first transistor;
- a second inductor that is coupled to the second passive electrode of the second transistor;
- and
- a common control electrode amplifier that is coupled to the first and second inductors, wherein the common control electrode amplifier includes a peaking inductor.
8 more elements
An apparatus comprising:
- a first voltage rail;
- a second voltage rail;
- a differential input pair of transistor that receives a differential input signal;
- a transformer that is coupled to the differential input pair of transistors;
- a first transistor having a first passive electrode, a second passive electrode, and a control electrode, wherein the first passive electrode of the first transistor is coupled to the second voltage rail, and wherein the control electrode of the first transistor is coupled to the transformer;
- a second transistor having a first passive electrode, a second passive electrode, and a control electrode, wherein the first passive electrode of the second transistor is coupled to the second voltage rail, and wherein the control electrode of the second transistor is coupled to the transformer;
- a first inductor that is coupled to the second passive electrode of the first transistor;
- a second inductor that is coupled to the second passive electrode of the second transistor;
- and
- a common control electrode amplifier that is coupled to the first and second inductors, wherein the common control electrode amplifier includes a peaking inductor.
7 more elements
Dependencies are inferred from the claim text.