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CMOS UWB wireless communications systems

José Luis González
D. Mateo, J.L. González, Enrique Barajas
During the next decade an increasing number of human activities demanding access to general network services is expected. The connection of the user terminals to other devices and long haul system transceivers will need of wireless communication techniques. Due to power and spectrum limitations, many of these terminals are expected to be placed in picocells.

CMOS technology is the most suitable one, since cost and power reduction are of a very important concern in the design of the user terminal. This technology will also allow RF, analog and digital integration in the same die.

Ultra-WideBand communitacions is a totally different communicaions method, This technology is a carrierless system where impulse are transmited, due to that the needed transmition power can be reduced.

In CMOS UWB wireless communication systems we combine both  technologys (CMOS and UWB)  in order to develop low power wireless communication systems.

  1. UWB Transceivers:
    1. Arquitecture: In order to reduce the power consumption differents transceivers arquitecture must be investigated. New arquitecture for low power can be proposed
  2. UWB Antenna
    1. Antenna: analysis of the suitability of current antenna models for UWB. Experimental characterization of antenna and comparison with models. Generation of new models if necessary.
Expected benefits:
  • UWB transceivers arquitecture evaluation from low power point of view
  • Design methodology: preparation and documentation of an efficient design flow for wireless mixed-signal RFICs using commercially available CAD-Tools (Cadence toolkit and AMS Hit-Kit).

Several RFICs prototypes will be designed and manufactured during the project. This will allow the experimental characterization of noise and power consumption, testing of the package models and their comparison with simulations, measurement of spectral distribution of dI/dt and substrate noise generated by digital circuitry and implementation and testing of the design techniques developed in the project.

Project Links
  • Current CICYT project (2002-2004)