Dissertation > Excellent graduate degree dissertation topics show

VHF band array antenna and receiver front-end design

Author: WuFeng
Tutor: MaHong
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: Lightning Detection VHF band Array antenna Array Receiver Front-End
CLC: TN820.15
Type: Master's thesis
Year: 2011
Downloads: 38
Quote: 0
Read: Download Dissertation

Abstract


The main subject of bear on cloud lightning lightning detection receiver front-end development tasks , specifically the array antenna and eight -channel array VHF band receiver front-end hardware design and implementation ; receiver array is called a number of antenna elements are arranged according to certain rules in space place different positions , an antenna array consisting particular , the use of the array to receive the signal field of space , it is designed to extract information from the signal wave characteristics ( parameters) , while suppressing interference and noise or information of interest ; which mainly use the signal airspace features to enhance signal reception strength and efficient analytical processing signal characteristic information ; therefore , array signal reception is often called airspace signal reception, compared to the more general signal reception , it features a higher spatial super- resolution capability and, apart from in addition there are higher signal processing capabilities and good anti-jamming capability , etc. ; each receiver channel mode using the superheterodyne receiver design, channel filtering primary limiter designed to protect circuit, using two SAW filter can be IF gain adjustment , variable local oscillator signals and other measures ; right consistency of the channel array channel design , in addition to taking regular channel calibration algorithm or as needed to calibrate the receiver channel outside ; hardware design stage in the chip selection , printed circuit board layout should ensure that all aspects of physical and electrical characteristics of the channel consistent , which is key to the design ; All chip configuration or switch controlled by the FPGA chip unified control , FPGA chip set aside resources for future consideration device capabilities expansion needs, via the serial port , and other means to trigger bus and ISP status query the system , functions and procedures for maintenance upgrades , software and hardware combination enhances the system's flexibility and scalability . Through testing , the channel array receiver front-end IF differential output signals can be consistent , the phase difference between channels within the calibration range , the channel amplitude-frequency characteristics, noise figure and gain other indicators have reached the design requirements. The receiver front-end receiver array using the array signals to analog conversion and progression after digital processing circuit calculations have been well simulated lightning power to locate, to further verify the feasibility of the program and circuit design is correct.

Related Dissertations

  1. Lightning FPGA-based signal processing research,TN791
  2. Based on binary optical coupling lens array antenna research and,TN820.15
  3. Azimuth-Range Joint Estimation and High Resolution Profiling in Antenna Array Radar,TN957.51
  4. UWB transmitter system electromagnetic compatibility studies,TN925
  5. The Research of Characteristics of Vhf-band Lightning Signal in Time-frequency-space Domain,P427.32
  6. The Design and Implementation of Vehicle-borne Tracking System with Phased Array Antenna,TN821.8
  7. Analysis and Simulation of small dielectric antenna,TN820
  8. Helicopter platform on the VHF band antenna miniaturization design and theoretical research,TN822
  9. Rail Way Electromagnetic Environment Test, Analysis and Countermeasures,TN929.532
  10. Sparse linear array optimization design and conformal gustiness can analysis,TN820
  11. K-band Doppler speed radar front-end development,TN958
  12. Research on the Sink Node Antenna for Wireless Sensor Network,TP212.9
  13. Research of Antennas Analysis Algorithm Based on a Combination Method of RWG Method of Moment and Wavelet,TN820
  14. Phased array pulse compression radar anti-jamming performance analysis,TN974
  15. Large phased array radar antenna array surface manufacturing technology research,TN957.2
  16. Study of Resultant Field of Cicular Array Composed by Parabolic Antenna,TN820
  17. The Research of Monopulse Technique Using Adaptive Digital Beamforming,TN78
  18. Design and Implementation of the third generation mobile communication base station antenna,TN929.5
  19. Research on Hybrid Beamforming Technique in Rician Channel,TN911.5
  20. Research on Beamforming Oriented IEEE 802.11n,TN919.3
  21. Research and Design of microstrip flat reflector array antenna,TN822

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > General issues > Signal is sent,the radiation system > Antenna array and antenna combination
© 2012 www.DissertationTopic.Net  Mobile