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Architectures et Circuits dédiés aux Émetteurs Ultra Large Bande Bas Débit

Abstract : Because of an increasing market request concerning wireless sensor networks, the development of new radio solutions becomes mandatory in order to answer the requirements of these emergent applications in terms of cost, power consumption, data rates and battery lifespan.
Associated to that framework, this PhD thesis proposes in a first time an overview of UWB (Ultra Wide Band) technology fundamentals followed by a status on the worldwide regulation and the IEEE 802.15.4a standard ; a set of specifications about an impulse transmitter is thus established. Correlated to the state-of-the-art of pulse generators, it clarifies the need for developing new transmitters, which we propose through an architecture based around a differential RF DAC working at 4GHz. An innovative principle for burst generation compatible with the IEEE 802.15.4a standard is then developed ; it allows to reduce the transmitter overall complexity. In a second time, both digital and RF blocks of the proposed architecture are specified and designed in the ST CMOS 65nm process. The functional principle of the generator architecture is validated by circuit measurements which achieve an efficiency of 38pJ per pulse for a pulse repetition frequency of 500MHz and an output average power of 0dBm.
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https://tel.archives-ouvertes.fr/tel-00260482
Contributor : David Marchaland <>
Submitted on : Tuesday, March 4, 2008 - 11:58:16 AM
Last modification on : Tuesday, June 2, 2020 - 7:36:03 AM
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David Marchaland. Architectures et Circuits dédiés aux Émetteurs Ultra Large Bande Bas Débit. Micro et nanotechnologies/Microélectronique. Université de Marne la Vallée, 2007. Français. ⟨tel-00260482⟩

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