Smart Systems Integration for Autonomous Wireless Communications

Title

Smart Systems Integration for Autonomous Wireless Communications

 Author

Danesh, M.

Contributor

Long, J.R. (promotor)

Faculty

Electrical Engineering, Mathematics and Computer Science

 Department

Microelectronics

 Date

2012-05-08

 Abstract

Integration of sensors and wireless transceivers for system networking aims at emerging applications that are highly integrated, self-powered, and low cost, relying on efficient power management schemes to prolong lifetime, thus eliminating the need for batteries as a limited primary source of energy. These applications include: health monitoring and body-area networks, environment and infrastructure monitoring, security, and building automation. Autonomous wireless transmitter sensor nodes that harvest solar energy outdoors and light energy indoors via a solar cell or photovoltaic module are developed for ultra-wideband 3-10 GHz communications. Photovoltaic (PV) antennas are used as both DC power source and radio-frequency (RF) radiator or receptor. Sharing the area consumed by the primary DC power source with the antenna reduces the size and overall cost of the transceiver, resulting in a smarter integrated wireless system. The overall package consists of a temperature sensor, a supercapacitor or a rechargeable battery, DC power management, digital signal processing, analog, RF circuitry, and a PV antenna. One transmitter node uses a single solar cell behaving as a broadband monopole antenna to generate up to 20 mW-peak power outdoors and consumes an average power of 10 µW when transmitting 1 kbps every minute. Other sensor nodes employ a PV dipole antenna for outdoor applications and a flexible PV loop antenna for in an indoor environment, transmitting data packets at 10 kbps with average power consumptions of 15 µW. These sensor nodes are light weight (< 10 g), suitable for portable and wearable applications.

 Subject

Wireless
Autonomous System
Ultrawideband
Antenna
Solar Energy
Energy Harvesting
Wireless Sensor Node

 To reference this document use:

http://resolver.tudelft.nl/uuid:6805e30e-4b22-4b26-9a49-55b3c94da967

 Part of collection

Institutional Repository

 Document type

doctoral thesis

 Rights

(c) 2012 Danesh, M.
Files
PDF MinaDanesh_PhD_thesis.pdf 20.54 MB
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