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Filtering by: Creator Mahmoud, Hosam M. Remove constraint Creator: Mahmoud, Hosam M. Committee Member Moon, Un-Ku Remove constraint Committee Member: Moon, Un-Ku

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  • Power Efficient Architectures for Low Noise Switched-Capacitor Filters and High Accuracy Analog-to-Digital Converters

    Creator:
    Payandehnia, Pedram
    Abstract:
    Filters and data converters are key analog-and-mixed-signal (AMS) building blocks in communication systems, such as software-defined radios and internet-of-things. In this dissertation, novel switched-capacitor filter and analog-to-digital converter (ADC) circuit configurations have been explored which are power efficient and are digital scaling friendly. First, a novel switched-capacitor low-pass filter architecture...
    Resource Type:
    Dissertation
    Full Text:
    Azizi, Yi Zhang, Chia-Hung Chen, Tao Hi, Xin Meng, Manju- nath Kareppagoudr, Lukang Shi, Mahmoud

  • Wideband and high accuracy delta sigma modulation data converter

    Creator:
    Jung, Youngho
    Abstract:
    Nowadays, needs for wideband and high accuracy analog-to-digital converter are increasing rapidly in manifold applications such as wireless communication, digital video and other consumer electronics. Besides, low power consumption is required to have longer battery life in portable systems. CMOS technology scaling and innovative modulator topology make the implementation much...
    Resource Type:
    Dissertation
    Full Text:
    , Sanghyeon Lee, Jeongseok Chae, Yi Zhang, Pedram Payandeh Nia, Tao He, Xin Meng, Jinzhou Cao, Mahmoud

  • Dynamic Error Calibration for Continuous-Time Delta-Sigma Modulator with Multi-GHz Sampling Rate

    Creator:
    He, Tao
    Abstract:
    Continuous-time ΔΣ modulators are widely used in cellular handsets due to their power efficiency and inherent anti-aliasing characteristics. To achieve demanding cellular bandwidth requirements while maintaining good power efficiency, multi-bit feedback is typically used. This approach provides benefits such as lower OSR, relaxed loop filter requirements, and reduced jitter sensitivity....
    Resource Type:
    Dissertation
    Full Text:
    talented and hard- working colleagues Manjunath Kareppagoudr, Yanchao Wang, Mahmoud Sadollahi, Jyotindra

  • Linearizing techniques for voltage controlled oscillator based analog to digital converters

    Creator:
    Rao, Sachin B.
    Abstract:
    Voltage controlled oscillator (VCO) based ADC is an important class of time-domain ADC that has gained widespread acceptance due to their several desirable properties. VCO-based ADCs behave like an open-loop continuous time ΔΣ modulator and achieve excellent resolution by first order noise shaping the quantization error. However, the SNDR of...
    Resource Type:
    Dissertation
    Full Text:
    to Hariprasath, Mrinmay, Praveen, Abjhijith, Saurabh, Romesh, Mahmoud, Ahmed, Simon, Woo-Seok, Kim

  • Digital Friendly Continuous-Time Delta-Sigma Analog-to-Digital Converters

    Creator:
    Maghami, Hamidreza
    Abstract:
    Conventional Delta-Sigma analog-to-digital converters (ADCs) utilize operational transconductance amplifiers (OTAs) in their loop filter implementation followed by multi-bit voltage domain quantizers. As CMOS integrated circuit technology scales to smaller geometries, the minimum transistor length and the intrinsic gain of the transistors decrease. Moreover, with process scaling the voltage headroom decreases...
    Resource Type:
    Dissertation
    Full Text:
    , Zhiping Wang, Mo- hamed Megahed, Yu Sang Chun, Azmeen Rahman, Shaan Sengupta, Hyunkyu Ouh, Mahmoud

  • Performance enhancement techniques for low power digital phase locked loops

    Creator:
    Elshazly, Amr
    Abstract:
    Desire for low-power, high performance computing has been at core of the symbiotic union between digital circuits and CMOS scaling. While digital circuit performance improves with device scaling, analog circuits have not gained these benefits. As a result, it has become necessary to leverage increased digital circuit performance to mitigate...
    Resource Type:
    Dissertation
    Full Text:
    Mahmoud Sadollahi. I wish to thank them for their discussions. I enjoyed interacting with Peter Kurahashi