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 15 of 15 for “"MMICs"”.
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Ion -Implanted GaAs MESFET MMICs for 77-Ghz Automotive Radar
… the design and performance of a set of MMICs fabricated at the University of Illinois in a 0.12-mum direct ion-implanted GaAs MESFET process. The circuits are suitable for insertion into a 77-GHz automotive radar system. This work develops non-linear, linear and noise models for the …
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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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Development of Direct Ion -Implanted Gallium Arsenide MESFET and Low-Actuation-Voltage RF MEM Switches
… facilitate the direct integration with current MMICs and provide a solution to broadband reconfigurable circuits. The mature GaAs MESFET technology integrated with RF MEM switches will have a direct impact on RF circuit applications in the future.
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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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Low power rf transceivers
… and Monolithic Microwave Integrated Circuits (MMICs) which achieve power consumptions of less than 1 mW and theoretical operating ranges of over 10 m are described. The motivation behind the design of circuits exhibiting ultra low power consumption and, in the case of the MMICs, small size is …
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AlGaN/GaN HFET with composite 'slow/fast' gate
… lower intrinsic residual capacitance. RF switch MMICs using novel "slow gate" design are presented, with below 1 dB insertion loss, above 35 dB isolation and more than +35 dBm power handling capability. </p> <p>In addition, the developed slow/fast HFETs demonstrate higher breakdown voltage and …
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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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Gallium nitride MEMS resonators
… and monolithic microwave integrated circuits (MMICs). At the same time, GaN also has excellent electromechanical properties, such as high acoustic velocities and low elastic losses. Together with a strong piezoelectric coupling, these qualities make GaN ideal for RF MEMS resonators. Hence, GaN …
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Systematic Optimization Technique for MESFET Modeling
… of monolithic microwave integrated circuits (MMICs), which consists of many MESFETs on the same chip. As the chip density increases, the need of accurate MESFET models becomes more pronounced. In this study, a new technique has been developed to extract a 15-element small signal model of …
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Three-Dimensional Heterogeneous Integration for RF/Microwave Applications
… Monolithic Microwave Integrated Circuits (MMICs). Photolithographically patterned thick-film SU-8 structures are applied to both the chip and the carrier such that the chip self-aligns into place and mates with the carrier. Gold bumps embedded within the structures electrically connect the …
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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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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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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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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, …