Dissertation > Excellent graduate degree dissertation topics show

W-band radiometer receiver channel technology research

Author: XuCongHai
Tutor: ZhangYongHong
School: University of Electronic Science and Technology
Course: Electromagnetic Field and Microwave Technology
Keywords: millimeter wave detector amplifier voltage sensitivity wide-band W band
CLC: TP722
Type: Master's thesis
Year: 2008
Downloads: 143
Quote: 1
Read: Download Dissertation

Abstract


In this thesis, the scheme of high-gain amplifying-demodulation is adopted in our miniaturization radiometer receiver channel, which is based on our analysis on radiometer architecture. In order to model our researching front-end channel system, the cosimulation work of the system is fulfilled with EM simulation softwore HFSS, CST and circuit-simulation softwore ADS.In order to realize our wide band requirement, two kinds of wide band matching architectures with the form of microstrip are proposed. By our optimization design process, two kinds of wide-band detector circuit topology structures with 15 GHz and 20 GHz bandwidth are accomplished. Through using via hole technology in transition simulating the characteristic of SIW, the resonance problem of transition is effectively avoided, a novel filter topology whose structure is simple and reliable is proposed and at last the wide-band amplify simulation work and circuit architecture is presented.The testing result of the detector in15 GHz bandwidth indicates that the voltage sensitivity is above 1000 mV/mW from 85.5GHz to 98GHz, from 93GHz to 98GHz, the voltage sensitivity is above 1500 mv/mw, from 94.5GHz to 97GHz, the voltage sensitivity is above 2000 mv/mw, while from 80GHz to 103.5GHz, the voltage sensitivity is above 600mv/mw.The testing result of the detector in 20GHz bandwidth indicates that the voltage sensitivity is above 800mv/mw from 83GHz to104GHz, and the best response of the voltage sensitivity is 2300mv/mw.In our research work of the detector, we have resolved the following key technology:(1) Wide-band matching technology: the simulated relative band width of the detector is over twenty percent, the voltage sensitivity is above 1000mv/mw in relative bandwidth over 16%, the voltage sensitivity is above 1500 mv/mw in relative bandwidth over 5%, and while from 80GHz to 107GHz, the voltage sensitive is above 800mv/mw.(2) Miniaturization technology: based on our analysis and optimization work, our required miniature and wide band W band detector is designed. And the circuits dimension is 1.23cm~* 1.8cm.

Related Dissertations

  1. Research and Improvement of Multi-Level Modulation Self-Adaptive Digital Predistortion Algorithm,TN722.75
  2. Design of Digital Predistorter for RF Power Amplifier Based on FPGA,TN722.75
  3. The Research of Digital Lock-In Technology,TN911.8
  4. Study on Estimation of Two Dimensional Direction of Arrival Using a DBF Receiver,TN851
  5. Research of Acoustic Signal Acquisition System Based on DSP,TP274.2
  6. Research on the Theory of the Transmission-line Metamaterials and Their Applications,O441.6
  7. Research on Power Supply of Contactless Power Transfer System,TM46
  8. The Study and Design of Dual-band Printed Antennas,TN822
  9. Research on Solenoid Valve Test System for Water Medium,TH134
  10. First-Principles Study on the Charge Transport Properties of Organic Polymorphs,TB34
  11. On the Band’s Education Current Situation and Countermeasure,J621
  12. Design Power Amplifier of Basestation and Study on Predistortion System,TN722.75
  13. The Band Structure in 2D Resonant Phononic Crystal,O735
  14. Design and Implementation of Packet Processing under UWB,TN925
  15. Research on Distributed Fiber Optic Vibration Sensor,TP212.14
  16. Study on the Influence of Various Defects on the Characteristics of Infrared Photonic Crystal Fiber,TN253
  17. The Research of Switching Power Amplifier for Microprocessor Relay Protection Testing System,TM774
  18. Band Entropy Method and Its Application to Fault Diagnosis of Rolling Bearings,TH165.3
  19. Magnetic -type Hall sensor chip offset and noise cancellation technology research,TP212
  20. Integration technique based on linear RF power amplifier design Doherty,TN722.75
  21. Millimeter wave detector signal analysis and processor design,TN911.6

CLC: > Industrial Technology > Automation technology,computer technology > Remote sensing technology > Remote Sensing way > Points in accordance with the detection wavelength range
© 2012 www.DissertationTopic.Net  Mobile