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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"RFIC"”.
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ESD Protected SiGe HBT RFIC Power Amplifiers
… The design of ESD protection circuitry for RFIC's has been relatively slow to evolve, compared to their digital counterparts, and is now emerging as a new design challenge in RF and high-speed mixed-signal IC development. Sub-circuits which are not embedded in a single System-on-Chip (SOC), …
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Development of Nanoelectromechanical Resonators for RFIC Applications
… RF filters and resonators onto a single RFIC chip. The advantageous characteristics of these resonators could lead to mobile PCS devices with lower cost and increased battery life. The NEM resonator designs investigated in this work are fabricated using an electron-beam lithography based …
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Wideband RF Front End Daughterboard Based on the Motorola RFIC
… radio software package. Using the Motorola RFIC4 chip, the new daughterboard receives RF signals, converts them to baseband and does analog filtering and amplification before feeding the signal into the USRP for processing. The chip also takes transmit signals from the USRP, converts them …
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Use of machine learning in radio frequency integrated circuits (RFIC) development
… to the radio frequency integrated circuits (RFICs) industry and a discussion on the key problem of the existing RFIC development process: the need for multiple trial and error iterations due to inaccurate simulations. This simulation inaccuracy happens because the existing electronic design …
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On-chip self-rolled-up nanomembrane tube inductor for RFIC performance enhancement
… of radio frequency integrated circuits (RFICs). Numerous improvement methods have been demonstrated but all fail to fundamentally solve the intrinsic drawbacks of planar spiral structure, especially the most critical issue – substrate effects. A new design concept based on self-rolled-up …
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5-6 GHz RFIC Front-End Components in Silicon Germanium HBT Technology
… this thesis focuses on the development of a SiGe RFIC front-end for operation in the U-NII bands. Specifically, three variants of a packaged low noise amplifier (LNA) and a packaged active x2 sub-harmonic mixer (SHM) have been designed, simulated and measured. The fabrication of the Rifts was …
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Extending the Flexibility of an RFIC Transceiver Through Modifications to the External Circuit
… on one radio frequency integrated circuit (RFIC) (or microwave integrated circuit (MIC)). This trend has resulted in complex RFICs which often require reactive as well as other circuit components to be supplied in the form of an external circuit. Because the manufacturer's suggested circuit …
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Silicon-Based RFIC Multi-band Transmitter Front Ends for Ultra-Wideband Communications and Sensor Applications
Fully integrated Ultra-Wideband (UWB) RFIC transmitters are designed in Si-based technologies for applications such as wireless communications or sensor networks. UWB technology offers many unique features such as broad bandwidth, low power, accurate position location capabilities, etc. This …
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Design and Characterization of RFIC Voltage Controlled Oscillators in Silicon Germanium HBT and Submicron MOS Technologies
Advances in wireless technology have recently led to the potential for higher data rates and greater functionality. Wireless home and business networks and 3G and 4G cellular phone systems are promising technologies striving for market acceptance, requiring low-cost, low-power, and compact …
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UHF RFID Antenna Impedance Matching Techniques
… to a Radio Frequency Integrated Circuit (RFIC). RFID tags in the ultra-high frequency (UHF), industrial, scientific and medical (ISM) 902-928MHz band and global Electronic Product Code (EPC) 860‑960MHz band are powered passively (power extracted from carrier wave) and cost less than 15 …
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PREDICTING METRICS FOR NAVAL SUPPLY SYSTEMS COMMAND WHOLESALE INVENTORY OPTIMIZATION MODEL
… metrics, such as expected ready for issue cost (RFIC), fill rate (FR), documents required (DOCS), demand wait time (DWT), and demand wait time for backorder (DWTBO) can be accurately predicted using machine learning models instead of repeated simulation runs. We examine two machine learning …
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High-Performance Computing and Parallel Techniques for Scalable Optimization of Power System Transition Planning
… aggregation, and a Relaxed Fixed Integer Cut (RFIC) heuristic that strengthens cuts at modest overhead. Computational studies on an illustrative system (AESO-6) and a realistic, large-scale case (AESO-144) demonstrate that PSTP can be solved scalably, providing valuable insight, with …
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PicoRF: A PC-based SDR Platform using a High Performance PCIe Plug-in Card Extension
… integrated package. One example is a prototype RFIC transceiver chip from Motorola Research Labs which contains a complete direct conversion RF transceiver in a single chip, with a frequency coverage range of 100MHz-2.4GHz. RFIC5, the latest version of the chip, has additionally integrated high …
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Diode Predistortion Linearization for Power Amplifier RFICs in Digital Radios
… predistortion linearization, particularly for PA RFICs in digital radios. Background discussion on common linearization techniques available to the PA designer is presented. In addition, a discussion of traditional and modern methods of nonlinearity characterization is presented, illustrating the …
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New Concepts in Front End Design for Receivers with Large, Multiband Tuning Ranges
… due to the recent advancements in CMOS--based RFIC technology. The possibility of multiple parallel transceivers in RF CMOS suggests an approach to antenna--receiver integration using multiplexers. This dissertation describes an improved use of multiplexers to integrate antennas to receivers. …
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Compact modelling in RF CMOS technology
… in DNWs. The most important passive device in RFIC design in CMOS is the spiral inductor. A 1-pi model with a novel substrate network is proposed to characterize the broadband loss mechanisms of spiral inductors. Based on the proposed 1-pi model, a physics-originated fully-scalable 2-pi model …
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Drifting-dipole noise model of nanometer MOSFETs for radio frequency integrated circuit design
… first-pass radio frequency integrated circuit (RFIC) designs using state-of-the-art CMOS technologies. As the MOSFET is scaled down, the lateral field across the device channel becomes comparable to, or even exceeds, the vertical field. The device can no longer be considered as operating under …
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Characterization of various types of power amplifiers
… has gradually become the primary goal of modern RFIC manufacturers. In all RF transceivers, the power amplifier plays a key role in driving the antenna on the transmitting end, while low-noise amplifier boosts the receiving end signal. Together these components account for the basic operation of …
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Digital CMOS Design for Ultra Wideband Communication Systems: from Circuit-Level Low Noise Amplifier Implementation to a System-Level Architecture
… In addition to the normal challenges of CMOS RFIC design, there are two major technical challenges for the implementation of CMOS digital UWB radios. The first is building RF and analog circuitry covering wide bandwidth over several GHz. The second is sampling and digitizing high frequency …
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Differentially fed active antennas
… Differential circuits are preferred choice in RFIC design due to its good noise immunity and low distortion characteristics. But it is observed that single ended PAs and LNAs are used for the feeding part because of the antenna industry’s tendency to stick to conventional 50Ω interface. …
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