Dissertation > Excellent graduate degree dissertation topics show

Design of Self-tuning Programmable Analog Baseband Circuit in UHF RFID Receiver

Author: ZhangShuLin
Tutor: LaiZongSheng
School: East China Normal University
Course: Microelectronics and Solid State Electronics
Keywords: UHF RFID Reader Carrier Leakage DC Offset Cancellation Circuit Automatic Frequency Tuning Analog Baseband Channel Selection Filter ButterworthFilter All-pass Filter
CLC: TP391.44
Type: Master's thesis
Year: 2012
Downloads: 41
Quote: 0
Read: Download Dissertation

Abstract


Under the background that the technology of "Internet of things" has been gradually applied to various fields, as one of the core technologies, ultra high frequency radio frequency identification technology (UHF RFID) is developing towards the general trend. And the trend is a representative of rapid, low cost, high performance and high levels of integration. The purpose of research in this paper is to design a filter for analog baseband which is suitable for low cost, high integration degree UHF RFID reader receiver. Therefore, careful analysis, design and realization of circuit are implemented on the basis of studying related papers about UHF RFID reader and summarizing relevant knowledge of the filter. The results of the research are listed as follows:Firstly, according to UHF RFID EPC C1G2international agreement and China local UHF RFID regulations, This dissertation puts forward the way to realize receiving link baseband circuit which includes Dc offset Cancel Circuit (DCOC), integrated filter amplifier and all pass filter which is also used as buffer circuit.Secondly, Design single chip active high-pass loop filter Dc offset cancellation circuit to remove the dc offset mainly caused by self-jamming in UHF RFID Receiver. Dc offset removing time is programmabled from35μs to290μs according to the communication data rate. Setting6dB gain in the DCOC circuit to ease the noise of baseband link.Thirdly, the Integrated filter amplifieris synthesized by the structure of TOW-THOMAS as a8th-order Butterworth filter. It has250KHz and1.35MHz two cut-off frequency and achieves variable gain from4dB～64dB with10dB per step, it realizes good compromise among high linearity, high dynamic range and low noise in the UHF RFID reader. Considering the inaccurate cut off frequency caused by passive device parameters in Active-RC filter which changes with technology and temperature, an automatic frequency tuning circuit is designed in the filter to solve the problem. The cut-off frequency deviation is controlled within5%.Fourthly, in order to drive A/D converter and improve group delay characteristics, an all-pass filter(APF) with buffered output is also proposed. The insertion of APF is0.2dB.Finally, based on the analog baseband solution proposed in this paper, The analog baseband circuit in UHF RFID reader’receiving link is realized by cascading the modules. An adjacent channel rejection of40dB is achieved. The dc offset removing time can be less than100μs. The baseband bandpass achieves variable gain from10dB-70dB with10dB per step. The baseband ⅡP3(Input3rd order intercept point) is about10dBm at the10dB gain mode; When the total baseband gain is30dB, the passband’integral noise less than25dB. Meet the short distance communication requirements in portable UHF RFID reader.

Related Dissertations

  1. The Research and Design of Phase Conjugation Mixer in Retro-directive Array,TN773
  2. The Simulation Renserch of New Series Hybrid Active Power Filter and Some Related Problems Analysis,TN713.8
  3. Analysis and Research of UWB Filters Based on Defected Ground Structure,TN713
  4. Study on the Technique for Transmission-zeros of LC Filters Constructed on Multilayer Substrates,TN713
  5. Study on Stacked-lc Bandpass Filters Constructed on Multilayer Substrates,TN713.5
  6. The Research and Design of Signal Processing Technology of the Optical Fiber Displacement Sensor Based on Intensity Modulation,TN911.7
  7. Design and Realization of Active Emissivity Measurement System,TP274
  8. Study on the Technique for Stacked-Multistage Cascaded LC Band-pass Filters on Multilayer Substrates,TN713.5
  9. Research on Three-Phase Three-Wire Shunt Active Power Filter Based on DSP,TN713.8
  10. Design and Research of Analog Front End Circuits of Receiver for HBC,TN851
  11. The Study and Implementation of Automatic Scanning Device Used for Measuring the Quality of Band-pass Filter,TH744.1
  12. Model Predictive Control Immunity Performance Analysis and Improvement Methods,TP273
  13. Based on filter decomposition singularly perturbed system H_ ∞ / H_ control,TP13
  14. Study of Band-pass Filter for the All Fiber Interconnection Between Multimode Fiber and Single Mode Fiber Network,TN713.5
  15. Research on Blind Source Separation Based on High-order Cumulant and It’s Application on Rotating Machinery,TH165.3
  16. Multi-mode multi-band mobile digital TV receiver applications analog baseband chip design,TN948.55
  17. The Key Modules Study and Implement of ISM Band Receiver,TN858
  18. Multi-mode transmitter of the variable -gain analog low-pass filter design,TN713.4
  19. Research and Design of Bandpass Filters Using LC Resonators,TN713.5
  20. The Cavity Asana Band-pass Filter Research and Design,TN713.5
  21. Study on Filtering Algorithm of the Aerial Gravity Measurement Data Processing,P223

CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Optical pattern recognition devices
© 2012 www.DissertationTopic.Net  Mobile