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- W1494978188 abstract "Power amplifiers, which are essential elements of any communication system, will play a crucial role in the development of future communication systems. Today improving power amplifiers requires technological advances at the circuit device level, but one also must consider a more global approach. In particular, advances in digital processing can now correct in the early stage of the communication chain some distortions that are generated downstream in the chain. Digital pre-distortion is a correction technique for power amplifiers that has a growing interest because of its completely digital implementation and of its gains in linearity and energy consumption. This technique requires a feedback path where the analog-to-digital converter is a critical element. This component must satisfy the constraints of high resolution , wide bandwidth, and high linearity. In this thesis, we propose a new architecture of analog-to-digital converter based on bandpass Delta-Sigma modulators. This architecture takes advantage of operating bandpass modulators that are designed to work in parallel, each focusing on different frequencies, but also of a particular cascading arrangement to eliminate the useful signal, which has a high power, in order to reduce dynamics constraints. High-level design and simulations were carried out for discrete time and continuous time systems and also required the development of appropriate simulation tools." @default.
- W1494978188 created "2016-06-24" @default.
- W1494978188 creator A5031384087 @default.
- W1494978188 date "2013-01-11" @default.
- W1494978188 modified "2023-09-24" @default.
- W1494978188 title "Wideband bandpass sigma-delta analog-to-digital conversion for nonlinearly distorted signals of power amplifiers" @default.
- W1494978188 hasPublicationYear "2013" @default.
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