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The Research of Dynamic Matching between Receiver and A/D Converter

Author: HuDaSheng
Tutor: GuoWanYou；LiChunHua
School: Xi'an University of Electronic Science and Technology
Course: Electronics and Communication Engineering
Keywords: Dynamic Range Sensitivity ADC Oversampling Pulse compression
CLC: TN792
Type: Master's thesis
Year: 2009
Downloads: 223
Quote: 2
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Abstract


Create a large dynamic technology on high-sensitivity receiver wideband digital receivers , requires the ability to achieve a wide input bandwidth , high sensitivity and resolution , large dynamic range , the use of digital signal processing and with multi- processing capabilities to complete the radar, communication and other types of signal reception work . Dynamic range and sensitivity of the wideband digital receiver is the key performance indicators. Large dynamic receiver technology is to solve the broadband digital receiver RF front-end and high-speed ADC dynamic range of an existing match between the bottleneck problem of possible options . Low-noise receiver technology, the receiving system is to achieve high sensitivity and small signal reception of key technologies. Based on the dynamic range and sensitivity of the theory , we propose a wideband digital receiver dynamic range to improve the sensitivity and less impact on the parallel amplifier configuration . In this method, a parallel structure has incremental gain amplifier group , the signal passes through this structure , the total dynamic range was expanded , and improved small- signal reception capability while relatively small effect on sensitivity . Simulation and performance analysis shows that the parallel amplifier structure effectively improves the dynamic range and sensitivity of the receiver . Also presented on the use of over-sampling techniques and pulse compression techniques can greatly improve the dynamic range of the theoretical and experimental demonstration.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Digital circuits > Digital-analog , digital to analog conversion circuit
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