Global ETD Search
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 33 for “"MMIC"”.
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A 60 Ghz Mmic 4x Subharmonic Mixer
… monolithic millimeter wave integrated circuits (MMICs) offer the most practical solution. In the design of radio tranceivers with a high degree of integration, the receiver front-end is typically the most critical component to overall system performance. High-performance low-noise amplifiers …
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Caracterización eléctrica y térmica de amplificadores MMIC de potencia
… cadena de circuitos monolíticos de microondas (MMICs) debido a múltiples ventajas sobre otro tipo de tecnologías: bajo coste por dispositivo, prestaciones, fiabilidad, reducido tamaño, versatilidad, integración de múltiples y variadas funciones en un mismo chip... En esta tesis doctoral se …
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Sub-micron gate lithography in an MMIC production environment
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1990, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1990.
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100 -Ghz Enhancement and Depletion Mode MESFET MMIC Process Development
Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Flexibler Modulator und Digitalverstärker-MMIC für den energieeffizienten Betrieb einer digitalen Sendekette im GHz-Bereich
… mit einem ebenfalls neu entwickelten Verstärker-MMIC anschließend eine vollständige Sendekette aufgebaut und vermessen. Im ersten Teil der Arbeit wird auf die Funktion des Modulators für digitale Verstärker eingegangen und es werden die bestehenden Verfahren vorgestellt. Nach einer vergleichenden …
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Modeling of In(0.49)Ga(0.51)P/GaAs Heterojunction Bipolar Transistors for ADC and MMIC Circuit Design
State-of-the-art monolithic Ka-band voltage-controlled oscillators were designed, tested and fabricated. Power output was $>$5 dBm and the phase noise was $<$90 dBc/Hz at 100 kHz. The phase noise and output power are also tested vs. the ambient temperature of the oscillator. Another design is …
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Development of Compound Semiconductor FET and Integrated Low -Voltage RF MEMS Switch Technology for Reconfigurable MMIC Applications
… success in millimeter-wave integrated circuit (MMIC) and optoelectronic applications due to material advantages over established silicon technology. This work presents results from three different compound semiconductor device technologies that each have appealing characteristics for various …
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Six-port wireless receiver architectures
… Three six-port architectures suitable for MMIC realization are discussed. <br/><br/>A new broadband six-port direct conversion wireless receiver architecture is proposed, designed and characterised. This receiver can operate from 900 MHz to4 GHz and can give bit error rate as low as 8E-7 …
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Design and integration of hybrid and monolithic microwave power amplifiers for wideband applications using gallium nitride technology
… and monolithic microwave integrated circuits (MMICs). Important details of design development and integration are discussed, featuring discrete component descriptions, substrate material selections, additional matching techniques, and comparisons of both wirebonds and flip-chip bonds that are …
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Monolithically integrated MEMS resonators and oscillators in standard IC technology
… in standard GaN monolithic-microwave-IC (MMIC) process. The first monolithic 1GHz MEMS-based oscillator in standard GaN MMIC technology is demonstrated, together with monolithic lattice and ladder filters. This allows for complete RF front-ends in GaN MMIC technology.
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Variable temperature high-frequency response of heterostructure transistors
… and monolithic microwave integrated circuits (MMICs). Applications for OEICs and MMICs include the rapidly growing telecommunications and personal communications markets. The key to successful OEIC and MMIC chip sets is the development of high performance, cost-effective technologies.
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Modelling of advanced submicron gate InGaAs/InAIAs pHEMTS and RTD devices for very high frequency applications
… in Monolithic Microwave Integrated Circuit (MMIC) low noise amplifiers (LNAs). The optimisation of InAlAs/InGaAs epilayer structures through advanced bandgap engineering together with gate length reduction from 1 m into deep sub-μm regime is the key solution to enabled high breakdown and …
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Novel feeds for microstrip and slot antennas: Theory and experiment
… for monolithic microwave integrated circuit (MMIC) applications are investigated both experimentally and theoretically, using the cavity model as well as a full-wave analysis. The input impedance of a microstrip antenna fed by an arbitrarily oriented slot in the ground plane is computed using …
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Ultra-low power radio transceiver for wireless sensor networks
… (or SpeckNet). This was achieved through quasi-MMIC prototypes and monolithic microwave integrated circuit (MMIC) with dc power consumption of less than 1mW and radio communication ranges operating at least one metre. A wireless sensor network is made up of widely distributed autonomous devices …
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Gallium Nitride-Based HEMTs for Microwave Power and Noise: Physics and Application
… The monolithic microwave integrated circuit (MMIC) demonstrated a noise figure of 3.5 dB, gain of 7.5 dB, input return loss of -7.5 dB, and output return loss of -15 dB at 8.5 GHz. The MMIC was fabricated on layers grown by MOCVD on a silicon carbide substrate and employed a 0.25-mum x 150-mum …
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Design and Characterization of Fully Monolithic Millimeter -Wave Oscillators
… the lowest cost will be selected. In current MMIC oscillator research, there is little prediction of the phase noise in the design process. Therefore, the results of past studies have been largely empirical. An empirical study only sets a performance benchmark for a particular device and …
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Design and Characterization of Liquid Metal Flip Chip Interconnections for Heterogeneous Microwave Assemblies
… active monolithic microwave integrated circuits (MMICs) onto a CTE mismatched substrate. Carrier substrates designed for liquid metal transitions were fabricated on high resistivity Si and on three dimensional copper structures. The three dimensional copper structures were fabricated in the …
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Sensor Package Analysis and Simulation for Direct Sensor-to-Satellite Links
… or in monolithic microwave integrated circuits (MMIC). The antennas are designed using array simulation program called 'ARRAY' and the results are used in another simulation program called Advanced Design System (ADS) to simulate the whole sensor package that uses one of the antennas. The …
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Gallium Nitride-Based HEMT Devices Modeling and Performance Characterization
… of monolithic microwave integrated circuits (MMICs). Power AlGaN/GaN MMIC design requires large signal modeling of the device. In bottom-up modeling techniques, the large signal model is based on small signal models derived at different bias conditions. In addition, noise performance analyses …
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Models and methods for power monolithic microwave integrated circuits
… of Monolithic Microwave Integrated Circuits (MMICs) depends critically on active device models that are accurate, computationally efficient, and easily extracted from measurements or device simulators. Empirical models of active electron devices, which are based on actual device measurements, …
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