Multi-mode broadband low noise amplifier
AssigneeSkyworks Solutions, Inc.
InventorsAravind Kumar Padyana, Rimal Deep Singh, Junhyung Lee, Bipul Agarwal
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Abstract
Multi-mode broadband low noise amplifiers (LNAs) are disclosed herein. In certain embodiments, an LNA includes a first amplification stage and a second amplification stage having a lower gain than the first amplification stage. The LNA is operable in a plurality of operating modes including a first mode in which the first amplification stage and the second amplification stage operate in a cascade to amplify a radio frequency (RF) receive signal, and a second mode in which the first amplification stage amplifies the RF receive signal and the second amplification stage is bypassed.
Claims20
A low noise amplifier comprising:
- an input configured to receive a radio frequency receive signal;
- a first amplification stage including a first gain transistor having a gate connected to the input, a second gain transistor having a gate connected to the input and a source connected to a source of the first gain transistor, a first selection transistor having a source connected to a drain of the first gain transistor, and a second selection transistor having a source connected to a drain of the second gain transistor;
- and
- a second amplification stage having a lower gain than the first amplification stage, the low noise amplifier operable in a first gain mode in which the first amplification stage and the second amplification stage operate in a cascade to amplify the radio frequency receive signal, and a second gain mode in which the first amplification stage amplifies the radio frequency receive signal and the second amplification stage is bypassed.
A packaged module comprising:
- a package substrate;
- and
- a semiconductor die attached to the package substrate, the semiconductor die including a low noise amplifier that includes an input configured to receive a radio frequency receive signal and a first amplification stage including a first gain transistor having a gate connected to the input, a second gain transistor having a gate connected to the input and a source connected to a source of the first gain transistor, a first selection transistor having a source connected to a drain of the first gain transistor, and a second selection transistor having a source connected to a drain of the second gain transistor, the low noise amplifier further including a second amplification stage having a lower gain than the first amplification stage, the low noise amplifier operable in a first gain mode in which the first amplification stage and the second amplification stage operate in a cascade to amplify the radio frequency receive signal, and a second gain mode in which the first amplification stage amplifies the radio frequency receive signal and the second amplification stage is bypassed.
A wireless device comprising:
- an antenna configured to generate a radio frequency receive signal in response to a radio wave;
- and
- a front end system including a low noise amplifier configured to receive the radio frequency receive signal at an input, the low noise amplifier including a first amplification stage including a first gain transistor having a gate connected to the input, a second gain transistor having a gate connected to the input and a source connected to a source of the first gain transistor, a first selection transistor having a source connected to a drain of the first gain transistor, and a second selection transistor having a source connected to a drain of the second gain transistor, the low noise amplifier further including a second amplification stage having a lower gain than the first amplification stage, the low noise amplifier operable in a first gain mode in which the first amplification stage and the second amplification stage operate in a cascade to amplify the radio frequency receive signal, and a second gain mode in which the first amplification stage amplifies the radio frequency receive signal and the second amplification stage is bypassed.
Dependencies are inferred from the claim text.