Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated notch filters to attenuate undesired signals. The cascode amplifier may operate from a large power supply when blockers are present to avoid voltage swing compression at its output. The cascode amplifier may be biased and designed to operate in a class AB mode to produce linear output current to avoid current compression or excessive current expansion.

Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated notch filters to attenuate undesired signals. The cascode amplifier may operate from a large power supply when blockers are present to avoid voltage swing compression at its output. The cascode amplifier may be biased and designed to operate in a class AB mode to produce linear output current to avoid current compression or excessive current expansion.

Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) and method are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier and a common-gate stage. The common-gate stage is dynamically biased based on an output voltage of the common-gate stage to allow an output voltage swing to be shared between the cascode amplifier and the common-gate stage.

Abstract: A variable gain amplifier includes multiple gain stages. Each gain stage includes a gain transistor and a cascode transistor to form a cascode amplifier, and a current diversion transistor to divert current away from a cascode transistor to reduce gain in the stage. A control circuit is included to maintain substantially constant drain-to-source voltage and drain current in the gain transistor.

Abstract: In general, in one aspect, the disclosure describes an amplifier that includes a first transistor coupled to ground and a second transistor coupled to the first transistor and a supply voltage. A voltage biasing circuit is used to provide biased voltages to the first and second transistors. An inductor coupled between the voltage biasing circuit and the second transistor.

Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) and method are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier and a common-gate stage. The common-gate stage is dynamically biased based on an output voltage of the common-gate stage to allow an output voltage swing to be shared between the cascode amplifier and the common-gate stage.

Abstract: A variable gain amplifier includes multiple gain stages. Each gain stage includes a gain transistor and a cascode transistor to form a cascode amplifier, and a current diversion transistor to divert current away from a cascode transistor to reduce gain in the stage. A control circuit is included to maintain substantially constant drain-to-source voltage and drain current in the gain transistor.