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A fully integrated receiver front-end circuit for a 4:1 time division multiplexing of RF signals from an antenna array is introduced. The switching necessary for multiplexing is implemented as an array of low noise amplifiers operating at 2.4 GHz with selectable outputs. The circuit includes on-chip input and output matching networks. A digital controller for rotating through the amplifier inputs...
SMILE (spatial multiplexing of local element) technique is a front-end receiver architecture which uses only one RF channel, carrying multiplexed information from multiple antennas. In this work, a fully integrated LNA (Low Noise Amplifier) in a 0.35 mum CMOS technology with four input channels and multiplex function is presented. The performance characteristics of the LNA such as gain, noise figure,...
This report summarizes some of the recent results at FOI with respect to multi-band and reconfigurable front-ends for flexible and multi-functional RF systems. Firstly, we report on a frequency agile X-band smart skin digital beamforming antenna based on using an 8-10 GHz tunable active filter and an image rejection mixer in a receiver GaAs MMIC. Secondly, we have also investigated the possibility...
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