Methods and arrangements for a low noise amplifier

Abstract

Embodiments may comprise low noise amplifier (LNA) circuitry with a tunable wideband and high linearity. Embodiments may increase the linearity of the LNA circuitry and reduce noise. The LNA circuitry may comprise an inverter having a differential input coupled with the antenna, a first cascode circuitry coupled between a differential output of the inverter and a second cascode stage circuitry, wherein the second cascode stage circuitry comprises a first N-path filter circuitry coupled with a first set of outputs of clock circuitry having a clock frequency of an incoming signal minus a delta frequency and a second N-path filter circuitry coupled with a second set of outputs of clock circuitry having a clock frequency of an incoming signal plus a delta frequency. Combining the response of the two N-path filter circuitries at plus and minus delta frequency may achieve frequency selectivity and attenuate blockers.

Dependencies are inferred from the claim text.