Patent ID: 8319555
Filing Date: 2012-11-27
Classification: H03F

Abstract:
1. A configurable low noise amplifier circuit, said low noise amplifier circuit being configurable via a switching arrangement between one of: a first topology in which said low noise amplifier circuit comprises a degeneration inductance whereby said low noise amplifier circuit operates as an inductively degenerated low noise amplifier, said circuit providing an output at a given output terminal when configured in said first topology; and a second topology in which said low noise amplifier circuit comprises a feedback resistance whereby said low noise amplifier circuit operates as a resistive feedback low noise amplifier, said circuit providing an output at said given output terminal when configured in said second topology; wherein said low noise amplifier comprises a first input transistor, and said degeneration inductance comprises a degeneration inductor connected between a first output terminal of said first input transistor and ground; and wherein said switching arrangement comprises: a first topology switching means connected between the first output terminal of said first input transistor and ground; and a second topology switching means connected between an input terminal of said first input transistor and said feedback resistance, wherein said circuit is configurable in said first topology by configuring said first and second topology switching means in an open state, and wherein said circuit is configurable in said second topology by configuring said first and second topology switching means in a closed state.