motlnamixIntegrated LNA and Mixer Basics Integrated LNA and Mixer Basics ABSTRACT Basic theory and operation of low noise amplifiers and mixers are presented Important figures of merits of these two devices such as gain noise figure compression point and third order intercept point are introduced and derived Measurement methods of these figures of merit are also described LNA Low noise amplifiers (LNAs) are widely used in wireless communications They can be found in almost all RF and microwave receivers in commercial applications such as cordless telephones cellular phones wireless local area networks and satellite uplinks and downlinks and in military applications such as doppler radars and signal interceptors Depending upon the system in which they are used low noise amplifiers can adopt many de……