Patent ID: 8294515

Claim:
A configurable low noise amplifier circuit, said low noise amplifier circuit being configurable between one of: a first topology in which said low noise amplifier circuit comprises a degeneration inductance stage whereby said low noise amplifier circuit operates as an inductively degenerated low noise amplifier; and a second topology in which said low noise amplifier circuit comprises a common-gate low noise amplifier stage whereby said low noise amplifier circuit operates as a common-gate low noise amplifier, wherein said second topology comprises one or more internal input impedance matching components and said first topology does not comprise said one or more internal input impedance matching components, wherein said circuit comprises a switching arrangement, said circuit being configurable between one of said first topology and said second topology via said switching arrangement, said switching arrangement comprising a topology switching means connected between an output of said degeneration inductance stage and an input of said configurable low noise amplifier circuit, wherein said circuit is configurable in said first topology by configuring said topology switching means in an open state, and wherein said circuit is configurable in said second topology by configuring said topology switching means in a closed state.