Apparatus and methods for biasing low noise amplifiers
AssigneeSkyworks Solutions, Inc.
InventorEngin Ibrahim Pehlivanoglu
Life of this patent
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Abstract
Apparatus and methods for biasing low noise amplifiers are provided herein. In certain configurations, a low noise amplifier (LNA) includes a transconductance device configured to amplify a radio frequency signal received from an input node, a cascode device electrically connected between an output node and the transconductance device, a first biasing resistor electrically connected between the input node and a ground node, a second biasing resistor electrically connected between the output node and the input node, and a current source electrically connected in series with the cascode device and the transconductance device.
Claims20
A low noise amplifier comprising:
- a transconductance device configured to amplify a radio frequency signal received from an input node;
- a cascode device electrically connected between an output node and the transconductance device;
- a first biasing resistor electrically connected between the input node and a ground node;
- a second biasing resistor electrically connected between the output node and the input node;
- and
- a current source electrically connected in series with the cascode device and the transconductance device.
A packaged module comprising:
- a package substrate;
- and
- a semiconductor die attached to the package substrate and including a low noise amplifier fabricated thereon, the low noise amplifier including a transconductance device configured to amplify a radio frequency signal received from an input node, a cascode device electrically connected between an output node and the transconductance device, a first biasing resistor electrically connected between the input node and a ground node, a second biasing resistor electrically connected between the output node and the input node, and a current source electrically connected in series with the cascode device and the transconductance device.
A mobile device comprising:
- an antenna;
- a front end system including a low noise amplifier having an input node configured to receive a radio frequency signal from the antenna and an output node configured to output an amplified radio frequency signal, the low noise amplifier including a transconductance device configured to amplify the radio frequency signal received from the input node, a cascode device electrically connected between the output node and the transconductance device, a first biasing resistor electrically connected between the input node and a ground node, a second biasing resistor electrically connected between the output node and the input node, and a current source electrically connected in series with the cascode device and the transconductance device;
- and
- a transceiver configured to receive the amplified radio frequency signal.
Dependencies are inferred from the claim text.