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Title page for etd-0811106-135557


URN etd-0811106-135557 Statistics This thesis had been viewed 1935 times. Download 25 times.
Author Meng-I Chou
Author's Email Address No Public.
Department Electrical Engineering
Year 2005 Semester 2
Degree Master Type of Document Master's Thesis
Language English Page Count 79
Title A BAND-SWITCHING VCO FOR UWB SYSTEM
Keyword
  • vco
  • tuning range
  • phase noise
  • wideband
  • UWB
  • UWB
  • wideband
  • phase noise
  • tuning range
  • vco
  • Abstract This thesis mainly focuses on the design of VCO for IEEE 802.15.3a UWB system and there are two kinds of oscillators those are the differential and quadrature VCOs respectively. They use NMOS switched-capacitor and switched-inductor to reach wideband purpose. The former adopts PMOS cross-coupled for active device and design on LC tank especially. In simulation layout course, all adopt TSMC 0.18μm 1P6M CMOS model to finish. We achieve the frequency band for 3.5~4.5GHz and 5.8~8GHz. The phase noise of low-frequency is between -105.512 and -111.958dBc/Hz @1MHz offset, the phase noise of high-frequency is between -94.686 and -104.852dBc/Hz @1MHz offset. 

    The latter utilizes the back-gate concept and switch tank to accord with the UWB demand. Hence, its power consumption is 12.27mW lower than the past design. The oscillator frequency at low band is 3.9~4.8GHz and its phase noise is between -108.388~ -115.672dBc/Hz @1MHz offset, the oscillator frequency at high band is 6.2~8.1GHz and its phase noise of high-frequency is between -92.878 and -108.385dBc/Hz @1MHz offset.
    Advisor Committee
  • Ming-Chieh Tsai - advisor
  • none - co-chair
  • none - co-chair
  • Files indicate in-campus access only
    Date of Defense 2006-06-15 Date of Submission 2006-08-11


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