Dissertation > Excellent graduate degree dissertation topics show

Design of Antenna System for Ionosphere-level- measurement

Author: WangYi
Tutor: XuLiang
School: Xi'an University of Electronic Science and Technology
Course: Radio Physics
Keywords: Shortwave Inverted-V antenna Automatic antenna tuner Circularly Polarized
CLC: TN820
Type: Master's thesis
Year: 2011
Downloads: 46
Quote: 0
Read: Download Dissertation

Abstract


This paper mainly introduced the antenna for ionosphere-level-measurement. The paper put emphasis on the automatic antenna tuner design and the antenna mode selection in the mobile ionosphere-level-measurement system. By means of theoretical analysis, analog simulation and experimental verification, a high-power, rapidly tunable, mobile ionosphere-level-measurement antenna was designed, which had yielded highly desirable results and met the requirements of the consumer in practice testing.An automatic antenna tuner was designed for inverted-V antenna used in ionosphere-level-measurement system, which could provide complete impedance information of the antenna for automatic antenna tuner, By calculating the optimal parameters of LC network, the antenna could be matched speedily, which had advantages of high automation and good power capacity. As a result of the lossless LC network, the antenna system had higher radiation efficiency, which sharply reduced the requirement of mobile ionosphere-level-measurement system.The automatic antenna tuner and the inverted- V antenna was designed and built, connected to the ionosphere-level-measurement instruments, a good result achieved. It showed the inverted- V antenna coordinating with automatic antenna tuner could satisfy the mobile ionosphere-level-measurement system, with a good electrical performance and steady operation in working band.A tri-band circularly polarized antenna is proposed. Based on the traditional crossed-dipole and the theory of transmission line, the antenna was designed for tri-band frequencies operating. Good radiation patterns and axial ratio are presented.

Related Dissertations

  1. Research of Large-Scale Remote Monitoring in Coalfield Based on Wireless Sensor Networks,TP274.4
  2. The current rotating electric field effect and magnetic effect,O441
  3. A Kind of Design in Low-sidelobe Circularly Polarized Microstrip Array Antenna,TN822
  4. The Multi-Frequency Printed Quadrifilar Helix Antenna for Satellite Navigation System,TN967.1
  5. Quasi-planar broadband circularly polarized microstrip antenna research,TN822
  6. Aircraft Type Recognition Based on Shortwave Communication,TP391.42
  7. Design and Realization of Test System for Shortwave Receiver Based on Virtual Instrument,TP274
  8. Laser sodium beacon numerical simulation study,O436
  9. Wireless Network Communication Technology in Military Command System,TN929.5
  10. Antenna Research and Design Based on RFID System Applications,TN822
  11. Research and Design of Compact Dual Band Circularly Polarized Microstrip Antenna,TN822
  12. Design of BT620S Stereo Bluetooth Headset,TN643
  13. Turbo codes in the the shortwave frequency hopping system technology and DSP implementation,TN914.41
  14. MIMO-OFDM system channel characteristics shortwave Research and Measurement,TN919.72
  15. Shortwave Frequency Hopping System ALE high technology research and implementation,TN914.41
  16. Wideband antenna miniaturization technology,TN822
  17. Shortwave frequency hopping system synchronization speed capture technology,TN914.41
  18. Research on Miniaturized Planar Inverted-F Antenna,TN823
  19. Study on the Distribution of Solar Energy in Marginal Ice Zone during Ice Melting Season,P731.15
  20. The Study of Antenna for Multi-Mode Airborne Satellite Navigation System,TN967.1
  21. The Emulator Study of the Infection of the Antennas Electromagnetic Radiation on the Human Body,X591

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Antenna > General issues
© 2012 www.DissertationTopic.Net  Mobile