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Design of L-Band Signal Generator Integrated 500-watt High-power Circuit

Author: LinKai
Tutor: ShiLingFeng
School: Xi'an University of Electronic Science and Technology
Course: Control Theory and Control Engineering
Keywords: L-band Frequency synthesizer Impedance matching FDTD method Transient Analysis
CLC: TN74
Type: Master's thesis
Year: 2011
Downloads: 21
Quote: 0
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Abstract


The frequency generator is the important part in the wireless communication device , and its performance will directly affect the performance of communications equipment . Onboard frequency generator performance testing required capable of producing 500-watt high-power , high - heat source test circuit , frequency generator to be tested in the next to the 500-watt high-power test circuit , in order to detect the performance of the work under the thermal radiation and electromagnetic radiation , and onboard frequency generator designed to verify the feasibility . This paper first reviewed the various frequency synthesizer technology and signal integrity , followed by proposed based on the signal return path width of the transmission line characteristic impedance matching technology and based on the finite-difference time-domain (FDTD) method of unequal length lossy transmission line instantaneous state analysis techniques , and elaborate on them . Subsequently, the basic principle of the direct digital frequency synthesis (DDS) technology with phase-locked loop frequency synthesizer (PLL) and a to use DDS incentive PLL achieve L-band frequency generator and an integrated 500-watt high-power circuit design . On the basis of the above work , according to the system requirements , the completion of the design of the circuit schematic . At the same time , the use of the proposed new system signal integrity analysis and design optimization of the various parts of the circuit layout , wiring , etc. , the L-band signal generator with a 500 -watt high-power integrated circuits on a printed circuit board , completing the design of the system printed circuit board . Finally , through the use of single-chip AT89S52 chip control word transfer , adjustable output frequency and temperature real-time detection software debugging . After repeated testing to achieve the functionality of the L-band signal frequency output and a 500 -watt high-power circuit power adjustable , and successfully integrated in a printed circuit board , the completed airborne verify the feasibility of the L-band signal generator . Ultimately, the project acceptance .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Frequency synthesizer technology,frequency synthesizer
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