An Integrated Analog Demultiplexer for Spatial Multiplexing of Local Elements Scheme Using MOS Transistors

This paper proposes a CMOS analog demultiplexer for Spatial Multiplexing of Local Elements scheme at baseband level. This technique is a front-end receiver architecture which uses only one RF channel, carrying multiplexed information from multiple antennas into one RF single channel. The described circuit has four channels, in which each channel has a differential switch pair and an OTA for amplification and differential to single-ended signal conversion. The specifications and simulation performance are in close agreement, which validate the proposed compact design.

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W artykule zaprezentowano analogowy demultiplekser CMOS do przestrzennego multipleksowania (Spatial multiplexing). Ta technika jest stosowana w odbiornikach używających tylko jeden kanał RF i umożliwia multipleksowanie informacji z wielu anten. Opisany układ ma cztery kanały i każdy z kanałów ma różną parę kluczy.