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Wideband microwave NDT hardware systems research

Author: PengLiang
Tutor: XuHui
School: Shenyang University of Technology
Course: Measuring Technology and Instruments
Keywords: Microwave Nondestructive Testing Ultra-wideband Source Directional Coupler Splitter
CLC: TP274.5
Type: Master's thesis
Year: 2009
Downloads: 65
Quote: 0
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Abstract


Reinforced concrete microwave nondestructive testing technology , refers to the concrete structure without damaging the case , the use of microwave imaging techniques that reinforced concrete location, quantity and weight, used to determine the concrete strength and other characteristics of defects , a new non-destructive testing technologies. The main task of this paper is in the original microwave nondestructive detection system based on the broadening of the band system to increase the system 's image quality. In this paper, microwave transmission line theory and microwave network analysis methods to do a simple introduction, which is the theoretical basis of microwave engineering . The main task of this project is to design a tool for non-destructive testing of ultra-wideband microwave microwave signal source and hardware systems directional couplers and power dividers . Describes several frequency synthesis technology and its components , discussed in detail the company's AD integrated ADF4350 PLL frequency synthesizer internal structure and properties of the signal source software use ADIsimPLL low-pass loop filter section loop bandwidth, phase margin and the signal source lock time and other parameters for simulation. Using microstrip balun structure will double-ended differential signal source into a balanced output ports unbalanced single-ended output to ground . The frequency range of the signal source of 800MHz ~ 4GHz. Describes a variety of different principles of the directional coupler , methods , applications , and various parameters of a directional coupler . This design of a directional coupler coupled parallel symmetrical structure, using broadside -coupled stripline compensation as coupled transmission lines , such that these meet the wide band coupler while still providing a good coupling factor . Finally using simulation software HFSS simulation directional coupler optimized design, get a good result. Describes the power splitter works and constitute broadband power divider such conditions , gives the design of multi-section power divider such as concrete tabular data. ADS calculated using the simulation software microstrip line width, length, of the power splitter schematics, board diagram for the simulation and optimization , has been the target results .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies
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