LOW NOISE AMPLIFIER PROVIDING VARIABLE GAINS AND NOISE CANCELLATION FOR CARRIER AGGREGATION

A variable-gain, low noise amplifier system includes a variable-gain, low noise amplifier, having a matching stage, coupled to an input signal with a plurality of different carrier frequencies, that provides complementary output signals containing the plurality of different carrier frequencies. The...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BELLAOUAR ABDELLATIF, ABDELHALEM SHERIF, FORBES TRAVIS, FANG SHER JIUN, ZHANG FRANK
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A variable-gain, low noise amplifier system includes a variable-gain, low noise amplifier, having a matching stage, coupled to an input signal with a plurality of different carrier frequencies, that provides complementary output signals containing the plurality of different carrier frequencies. The variable-gain, low noise amplifier also includes a set of carrier gain control stages, coupled to the complementary output signals, wherein each carrier gain control stage provides an independent gain for one carrier frequency of the plurality of different carrier frequencies. The variable-gain, low noise amplifier system also includes a gain controller, coupled to the variable-gain, low noise amplifier that provides gain control signals to determine the independent gain for each carrier gain control stage. A method of operating a variable-gain, low noise amplifier is also provided.