Direct-Conversion receiver Front-end for LTE wireless network

Communications systems present a continuing evolution in terms of the number of users and of the volume of exchange information. Therefore, the use of rapid, flexible and mobile users is needed. However, it is always met with a price constraints and an incessant miniaturization, which make the design conditions more and more difficult. This paper gives a short overview of radio receiver architectures and each of the building blocks constituting the receiver. These building blocks are filters, low-noise amplifier (LNA), mixers with a local oscillator, variable-gain amplifiers, and analog to digital A/D converters. The design of a radio receiver front-end covers the LTE RF requirements. The design of the proposed receiver is done using Keysight's SystemVue.