Design of Differential LNA and Double Balanced Mixer using 180\u202fnm CMOS Technology

Abstract

Abstract The RFICs plays an important role in wireless communication systems due to their effective operation in the 2.4\u202fGHz frequency, popularly known as ISM (Industrial, Scientific and Medical) band. LNA and Mixers are the major components used in transceivers for the purpose of amplification and frequency translation. Such LNAs and mixers are of different kinds and various techniques are used for their optimization. The paper describes the design of a differential LNA with two single stranded source degenerate LNAs with greater increase in gain. differential LNA is combined with Double balanced mixer with a current mirror circuit and BALUN with the bias controlling MOSFETs are used to show the better performance at 2.4\u202fGHz frequency range. CMOS has become a viable technology for the design of high-performance receivers in the Radio Frequency (RF) regime. The conversion gain of 22.28\u202fdB and IF of 595\u202fMHz of Differential LNA with Double Balanced mixer are higher than the cross comparison results of the other methods at 180\u202fnm technology. CMOS implementation of the design is done using the Cadence Virtuoso tool of 180\u202fnm technology at 2.4\u202fGHz frequency and 1.8\xa0V of supply voltage.