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  • A new correction algorithm for gain and phase imbalances in a homodyne receiver

    Creator:
    Vogel, Julia
    Abstract:
    The recent demand for wireless transceivers has created a flurry of research into nontraditional receiver architectures. The homodyne receiver, because of its high degree of integration, low complexity and low power consumption, has surfaced a desirable alternative to the well-known heterodyne receiver. However, distortions such as gain and phase imbalance...
    Resource Type:
    Masters Thesis
    Full Text:
    and best known receiver architecture. The RF (radio frequency) signal is applied to an LNA and then

  • Modeling and simulation methods for RF MEMS VCOs

    Creator:
    Sankaranarayanan, Janakiram Ganesh
    Abstract:
    This work focusses on the modeling and the development of efficient coupled simulation techniques for MEMS based RF oscillators. High-level models for MEMS based varactors have been discussed and their accuracy issues are identified, based on comparisons with numerical simulations. A faster simulation approach based on the time-domain shooting method...
    Resource Type:
    Masters Thesis
    Full Text:
    model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Frequency response of

  • Coupled circuit and device simulations for design of RF MEMS VCOs

    Creator:
    Behera, Manas
    Abstract:
    A new coupled circuit and electrostatic/mechanical simulator (COSMO) for the design of RF MEMS VCOs is presented in this thesis. The numerical solution of device level equations is used to accurately compute the capacitance of a MEMS capacitor. This coupled with a circuit simulator facilitates the simulation of circuits incorporating...
    Resource Type:
    Masters Thesis
    Full Text:
    4 COSMO: COUPLED SIMULATOR FOR MEMS OSCILLATOR…………37 4.1 Introduction……………………………………………………………37

  • The attenuation of radio-frequency disturbance on high-voltage transmission lines

    Creator:
    Kofoid, Melvin Julius
    Resource Type:
    Masters Thesis
    Full Text:
    The Attenuation of Radio-Frequency Disturbance High

  • An investigation of signal strength variations at broadcast frequencies

    Creator:
    Feikert, Grant Stephen
    Resource Type:
    Masters Thesis
    Full Text:
    Measuring Circuit 20-A 2-A FILTER TUNING UNIT OSCILLATOR FIRST INTERMEDIATE-FREQUENCY SECOND AuDIO

  • A self-calibrated, reconfigurable RF LNA

    Creator:
    Jayaraman, Karthik
    Abstract:
    Modern wireless System-on-Chips (SoCs), such as mobile handsets, sensor networks, and mm-wave systems, integrate an entire RF system on a single CMOS chip. Such highly complex systems require significant on-chip digital signal processing to help improve the performance of highly sensitive analog/RF components. The IC market being competitive, the ability...
    Resource Type:
    Masters Thesis
    Full Text:
    Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.3.1 Frequency tuning

  • Characterization and reduction of local oscillator phase noise effects in communications systems

    Creator:
    Godshalk, Edward M.
    Abstract:
    Recent developments in digital communications at microwave frequencies have revealed that local oscillator phase noise is often a factor in the bit error rate (BER) analysis. Digital signals transported across microwave radio links acquire waveform jitter from local oscillator phase noise. As jitter increases so does BER. The main goals...
    Resource Type:
    Dissertation
    Full Text:
    supplied by Local Oscillator (LO-1) as shown. the time domain, si(t), and the frequency domain, S,O

  • Linear and nonlinear feedback linearization of radio frequency power amplifiers

    Creator:
    Bogya, Robert I.
    Abstract:
    Radio frequency (RF) power amplifiers (PA) are the most power consuming components of a mobile communications unit. They are used to convert the DC power from the battery into RF power delivered to the antenna. In a cell phone it becomes very important to use highly efficient power amplifiers, such...
    Resource Type:
    Masters Thesis
    Full Text:
    Dr. Mario E. Magaña Radio frequency (RF) power amplifiers (PA) are the most power consuming

  • Analysis and design on low-power multi-Gb/s serial links

    Creator:
    Hu, Kangmin
    Abstract:
    High speed serial links are critical components for addressing the growing demand for I/O bandwidth in next-generation computing applications, such as many-core systems, backplane and optical data communications. Due to continued process scaling and circuit innovations, today's CMOS serial link transceivers can achieve tens of Gb/s per pin. However, most...
    Resource Type:
    Dissertation
    Full Text:
    oscillator coupled to a low-voltage swing, global clock distribution. Measurement results show a 6.4-7.2Gb

  • Hardware-Based Security Enhancement for Near Field Communication and Other Close Proximity Inductive-Based Communication Systems

    Creator:
    Kness, Philip J.
    Abstract:
    Several hardware-based security improvements to Near Field Communication (NFC) and Radio-Frequency Identification (RFID) systems are developed and presented. The improvements are intended to be used in conjunction with software encryption to ensure robust security. Two main implementations for a more secure NFC or RFID system are presented: a jamming system,...
    Resource Type:
    Masters Thesis
    Full Text:
    Near Field Communication (NFC) and Radio-Frequency Identification (RFID) systems are developed and