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 1801 for “"RF"”.
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RF power CMOS
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Novel saturable absorber devices grown using RF and magnetron RF sputtering
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Compact power conditioning and RF systems for a high power RF source
… Integration, compact power conditioning and RF systems were investigated with a maximum diameter of 15.24 cm. A simulator of a flux compression generator (FCG) was built as a non-destructive test stand to evaluate the power conditioning and RF systems. The FCG simulator approximated the …
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Photonic RF signal processors
… possibilities of processing radiofrequency (RF) or microwave signals in optical domain, which will be a key technology to implement next-generation mobile communication systems and future optical networks. Research activities include design and modelling of novel photonic architectures for …
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Low power rf transceivers
… cooperate and share computational resources to perform complex tasks such as monitoring fire hazards, radiation levels or for motion tracking. The radio section must be ultra low power e.g. sub 1 mW in order not to drain the limited battery capacity. The radio must also be small in size e.g. less …
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Combining RF Machine Learning and RF Photonics to Enable New Analog Communications Architectures
High-performance communications links and the increasing reliance on artificial intelligence are creating an exponentially increasing demand for higher data rates and computing performance. However, Moore’s Law of exponentially growing computing capabilities has slowed, meaning that the traditional …
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Efficiency Improvement of RF Energy Transfer by a Modified Voltage Multiplier RF DC Converter
Radio Frequency (RF) energy transfer is getting increasingly importance in new generations of wireless sensor networks and this trend is tremendously supported by the modern trends to Internet of things (IoT). This promising technology enables proactive energy replenishment for wireless devices. …
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RF signal inductors in iUHD for voltage controlled oscillators in configurable RF integrated circuits
… Structure Simulator and the resulting inductor performance parameters are used to design a voltage controlled oscillator (VCO) meeting 802.1 lb wireless specifications. The design demonstrates the importance of inductor quality factor in minimizing phase noise. It is also shown that further …
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Micromachined Components for RF Systems
Several fabrication techniques for surface micromachined 3-D structures have been developed for RF components. The fabrication techniques all have in common the use of epoxy patterning and subsequent metallization. Techniques and structures such as embedded conductors, epoxy-core conductors, a …
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RF Fingerprinting Unmanned Aerial Vehicles
… we propose an authentication system based on RF fingerprinting. Specifically, we extract and use the device-specific hardware impairments embedded in the transmitted RF signal to separate the identity of each UAV. To achieve this goal, AlexNet with the data augmentation technique was …
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Linearization of RF Power Amplifiers
Linearization of RF power amplifiers is surveyed, reviewed and analyzed. Cartesian feedback is specifically presented as an effective means of linearizing an efficient yet non-linear power amplifier. This reduces amplifier distortion to acceptable levels and enables the transmission of RF signals …
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RF Models for Active IPEMs
Exploring RF models for an integrated power electronics module (IPEM) is crucial to analyzing and predicting its EMI performance. This thesis deals with the parasitics extraction approach for an active IPEM in a frequency range of 1MHz through 30MHz. Based on the classic electromagnetic field …
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Cognitive RF Front-end Control
This research addresses the performance degradation in receivers due to poor selectivity. Poor selectivity is expected to be a primary limitation on the performance of Dynamic-Spectrum-Access (DSA) and millimeter wave (mmWave) technologies. Both DSA and mmWave are highly desired technologies …
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RF- Front-End Non-Linear coupling cancellation = Cancelación de acoplo no lineal en frontales de RF
… smaller incrementing the level of electronic interferences in their interior. The closeness of data metallic wires and many electronic circuits creates rather hostile environment which, among other dis¬tortions, stimulates the appearance of undesirable energy transfers between physical mediums. …
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Compact modelling in RF CMOS technology
… metal-oxide-semiconductor (CMOS) technology, the RF performance of metal-oxide-semiconductor field transistors (MOSFETs) has considerably improved over the past years. Today, the standard CMOS technology has become a popular choice for realizing radio frequency (RF) applications. The focus of the …
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Magnetic Material Effects On Rf Circuits
This thesis discusses the interaction of magnetic materials and high frequency signals inside of microstrip transmission line circuits. This work is based on microstrip circuit designs that use magnetic materials for either the ground plane and/or as an insert inside the microstrip substrate. The …
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Multi-function RF for Situational Awareness
<p>Radio frequency (RF) communications are an integral part of many situational awareness applications. Sensing data need to be processed in a timely manner, making it imperative to have a robust and reliable RF link for information dissemination. Moreover, there is an increasing need for …
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RF-MEMS switches for reconfigurable antennas
… on multiple frequency bands and patterns. RF-MEMS is a promising technology that has the potential to revolutionize RF and microwave system implementation for next generation telecommunication applications. Despite the efforts of top industrial and academic labs, commercialization of RFMEMS …
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