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Filtering by: Creator Natarajan, Arun Remove constraint Creator: Natarajan, Arun Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • A Wireless Energy Harvester for Powering Event-driven Internet-of-things Applications and Battery Charging

    Creator:
    Sadagopan, Kamala Raghavan
    Abstract:
    The need for sustainably powering unobtrusive internet-of-things applications has led to an interest in energy harvesting. Particularly, the proliferation of wireless communication and devices in the 2.4 GHz Industrial Scientific c Medical (ISM) band creates an opportunity to leverage commonly used devices for RF powering. This dissertation presents a low-quiescent-power...
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    Applications and Battery Charging Abstract approved: Arun Natarajan The need for sustainably powering

  • Co-channel Blocker and Self-Interferer Tolerant Receiver Architectures for MIMO and Full-Duplex MIMO Receivers

    Creator:
    Jain, Sanket
    Abstract:
    This research focuses on receiver architectures which enable better spectral eciency by handling blockers in the same spectral range as the signal. The presence of such blockers, without the use of blocker cancelling/ ltering techniques leads to gain compression and hence, consequent performance degradation of receivers leading to reduced spectrum...
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    Dissertation
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    MIMO Receivers Abstract approved: Arun Natarajan This research focuses on receiver architectures

  • Scalable Array Transceivers with Wide Frequency Tuning Range for Next Generation Radios

    Creator:
    Agrawal, Abhishek
    Abstract:
    Scalable array transceivers with wide frequency tuning range are attractive for next-generationradios. Key challenges for such radios include generation of LO signals with widefrequency tuning range, scalable synchronization between multiple array unit cells andtolerance to in-band and out-of-band interferers. This thesis presents approaches toaddress these challenges in commercial CMOS technologies.The...
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    Abstract approved: Arun S. Natarajan Scalable array transceivers with wide frequency tuning range are

  • IC-Antenna Co-Integration for Efficient and Scalable Millimeter-Wave Antenna Interfaces

    Creator:
    Liu,Yao
    Abstract:
    Millimeter-wave (mm-wave) technology promises high speed, high system capacity and low latency interconnects with reduced cost. Applications like high data-rate wireless links, next generation automotive sensors and security body scanners highly depend on mm-wave technology innovations. As operating frequency moves to higher mm-wave bands, shrinking antenna dimensions enable co-integration of...
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    Dissertation
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    : Arun S. Natarajan Millimeter-wave (mm-wave) technology promises high speed, high system capacity and

  • Fully-integrated mm-Wave Full-duplexing and MIMO Multi-beamforming Receiver Techniques for 5G and Beyond

    Creator:
    Garg, Robin
    Abstract:
    In recent years, the research community's interest in fully integrated mm-Wave wireless communication systems has increased significantly. With the standards for 5G NR now in place, the focus has shifted to actual deployment. Mm-Wave systems provide wider bandwidths, higher capacity, and lower latency than existing systems such as 4G. Higher...
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    Dissertation
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    Abstract approved: Arun S. Natarajan In recent years, the research community’s interest in fully

  • RF and Millimeter-wave Techniques to Improve Scalability and Efficiency of Digital Beamforming Arrays

    Creator:
    Johnson, Manoj
    Abstract:
    Spectrum overcrowding, ever increasing demand for high data rate and increased mobility requirements are three major challenges 5G-technology is trying to address. In this thesis I start with a RF front-end technique that deals with blocker interference arising from spectrum overcrowding both across frequency bands and within the same frequency...
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    Dissertation
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    Arrays Abstract approved: Arun S. Natarajan Spectrum overcrowding, ever increasing demand for high

  • Low-power millimeter-wave transceiver for short-range wireless and guided wave links

    Creator:
    Zhan, Kai
    Abstract:
    Low-power millimeter-wave (mm-wave) transceivers are of interest for achieving energy-efficient high data rate short-reach wireless and guided-wave links. Spatial modulation or space-shift keying (SSK) can provide energy efficiency improvements by using antenna-switching or transmission direction switching for data modulation. Such links are particularly attractive at millimeter-wave frequencies due to small...
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    approved: Arun S. Natarajan Low-power millimeter-wave (mm-wave) transceivers are of interest for achieving

  • Highly-Integrated Low-Power RF Receivers for Distributed Sensing and IoT Devices

    Creator:
    Bialek, Hayden
    Abstract:
    Low-power receivers (RX) with 100$\mu W$-scale power consumption can enable several power/energy-constrained IoT applications. However, achieving sensitivity, interferer tolerance and wide operating range with low power presents a challenge for existing architectures, particularly those constrained to highly integrated solutions without high-Q off-chip components. Existing solutions rely heavily on high quality...
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    Dissertation
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    Abstract approved: Arun Natarajan Low-power receivers (RX) with 100µW -scale power consumption can enable

  • Wirelessly Powered cm-Scale Sensor for Small Insect Localization Application

    Creator:
    Kang, Jian
    Abstract:
    The prevalence of Internet-of-Things (IoT) applications leads to an increasing focus on the design and optimization of sensor nodes. Battery lifetime and associated costs of battery replacement often limits the long term operation and viability of sensor nodes. RF wireless energy harvesting on the other hand can be appealing since...
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    : Wirelessly Powered cm-Scale Sensor for Small Insect Localization Application Abstract approved: Arun S

  • Analysis and design on low-power short-range radios for wireless body area networks

    Creator:
    Cheng, Jiao
    Abstract:
    The release of the IEEE802.15.6 standard has led to increased interest in low-power technologies for wireless body-area-networks (WBANs). The power dissipation, supply voltage, and die area are some of the most important criteria for successful WBAN implementations. Digital-intensive RX architectures can potentially result in sub-1V operation with significant reductions in...
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    -major advisor, Dr. Patrick Yin Chiang, and my co-major advisor, Dr. Arun S. Natarajan. Their