Journal
PROCEEDINGS OF THE IEEE
Volume 88, Issue 10, Pages 1528-1545Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/5.888993
Keywords
active filter; amplifier; analog CMOS; inductor; low-power analog; low-power RF circuits; low voltage; mixer; oscillator; power conscious; radio paging; sensor network; technology scaling; wearable wireless devices; wireless messaging
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The great importance of power consciousness is well understood in mobile wireless communications. However, with growing experience the fundamental principles underlying power conscious design of RF circuits, systems, and networks are only now becoming known. Using as example ultralow-power wireless devices for messaging such as paging receivers and wireless sensor networks, in the first part of this paper presents the relationship between current consumption and dynamic range of low-noise amplifiers, mixers, oscillators, and active filters. The second part of the paper covers issues of modulation, protocols, and networking that would be required in dense networks of wireless sensor, which communicate using very little energy. These ideas are expected to find use in most forms of digital wireless communications.
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