Circuitos integrados de radio-recepção para a operação de multiplexação espacial de antenas em tempo real / Integrated circuits of radio-reception for spatial multiplexing of antennas in real time

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This research aims the conception of new topologies of integrated circuits and its characterizations for operation in radio-receiver systems. The design and fabrication of RF switches, LNAs, mixer, and VCOs are presented. The SMILE - Spatial MultIplexing of Local Elements - technique was adopted due to its advantages and functionality for the intelligent antennas physical optimization. This technique requires a sequential switching of the antennas and for this purpose a switch driver with a digital VCO was developed. The analog demultiplexation of the signal is implemented with OTA and differential analog switches. Thus, besides the introduction of new integrated circuit topologies, this work establishes procedures of design and simulation together with the manufactured devices validation. Keywords: integrated circuits, radio-reception, smart antennas, SMILE

ASSUNTO(S)

sistemas de comunicação movel microondas integrated circuits microeletronica circuitos intergrados amplificadores de radiofrequencia low noise amplifier mos transistor microelectronic semicondutores de oxido metalico microwave

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