Title page for etd-0614114-155610


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URN etd-0614114-155610
Author Chia-ming Chang
Author's Email Address No Public.
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Department Electrical Engineering
Year 2013
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A 10-bit Process-Calibrated Current-Steering D/A Converter and High Bandwidth and High Coversion Gain Power Detector for Frequency-Shift Readout Systems
Date of Defense 2014-06-25
Page Count 93
Keyword
  • current-steering
  • process-calibrated
  • DAC
  • power detector
  • Abstract Since the combination of antigens with the corresponding antibody will change the
    resonant frequency of certain MEMS sensors, this kind of technology is often utilized for
    a rapid screen test, e.g., allergy testing, Carcinoembryonic Antigen (CEA) and Alphafetoprotein
    (AFP) cancer marker detection using flexural plate wave (FPW) devices. The
    thesis consists of two important designs for the mentioned frequency-shifting sensoring
    systems, i.e., a 10-bit process-calibrated current-steering DAC and high bandwidth and
    high coversion gain power detector.
    A frequency-shift readout system needs to drive sensors such that DACs are indispensable.
    The 10-bit process-calibrated current-steering DAC in this thesis utilizes a process
    sensor to detect process corners and generate corresponding digital codes, which are
    coupled to a current calibration circuit to compensate the output voltage. An auxiliary delay
    circuit is employed in the current source to cut off the un-activated calibration current.
    The maximum DNL and INL are measured to be 0.18 LSB and 0.32 LSB, respectively.
    The other design of this thesis presents a high bandwidth and high coversion gain
    power detector for the frequency-shift readout system. This design is basically composed
    of two common source amplifiers, followed by a peak detector or a valley detector to
    detect the presence of the resonant frequency. Besides, the range of frequency detection
    is 0.1 GHz ∼ 16 GHz. The coversion gain is as high as 264 mV/dB such that the
    power detector will enhance the accuracy and widen the operating frequency range of the
    frequency-shift readout systems.
    Advisory Committee
  • Yu-Cheng Lin - chair
  • Tzu-Chao Chuang - co-chair
  • Ko-Chi Kuo - co-chair
  • Chua-Chin Wang - advisor
  • Files
  • etd-0614114-155610.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2014-07-14

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