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 10 of 10 for “"integrated antenna"”.
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Design and Analysis of An Active Integrated Antenna
<p>In this thesis, an active integrated antenna (AIA) system is proposed for potential applications in an RF receiver front end for mobile and wireless communication devices. The AIA system consists of a microstrip patch antenna and a low noise amplifier (LNA), which are integrated together with a …
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Development of planar filters and diplexers for wireless transceiver front ends
… of applications of these circuits in integrated transceiver RF front-end. The core of this thesis therefore presents the following stages of the work: - Analysis of coupled pseudo-interdigital resonators and lines; formulation of approximate transmission zero conditions and the …
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SiGe receiver front ends and flip-chip integrated wideband antennas for millimeter-wave passive imaging
… 77-GHz and 94-GHz front end receivers with integrated antennas for passive imaging have been designed and characterized. These front end systems exhibit wideband performance with the highest gain and lowest noise figures reported thus far for silicon-based systems in the 77-GHz and 94-GHz …
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A Compact RF/Photonic Antenna using a Quantum Dot Mode Locked Laser as a Source
… on achieving an active compact RF/Photonic antenna module based on a broadband antenna design integrated with a quantum dot mode-locked laser (QDMLL). A two-section QDMLL is used to produce pulsed microwaves signals to feed the radiating antenna. To realize the microwave signal radiation …
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Development of conformal reconfigurable metamaterial-based antennas
Antennas are vital components of any wireless communication device. There has been a wide demand for novel flexible and reconfigurable wireless devices as a result of the rising user applications. This thesis presents the design of flexible low-cost antennas using metamaterial loadings with …
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Development of Integrated "Chip-Scale" Active Antennas for Wireless Applications
… and wireless local area data networks (WLANs). Integrated microstrip antennas coupled directly to the RF electronics, offer potential advantages of low cost, reduced parasitics, simplified assembly and design flexibility compared to systems based on discrete antennas. However, the size of such …
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THz Radiation Detection Based on CMOS Technology
… as an excellent platform to achieve fully integrated THz imaging systems. In this Ph.D. thesis, we report on the design and development of field effect transistor (FET) THz direct detectors operating at low THz frequency (e.g. 300 GHz), as well as at higher THz frequencies (e.g. 800 GHz …
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3D Micromachined Passive Components and Active Circuit Integration for Millimeter-wave Radar Applications
… and testing of various components of a highly integrated mm-wave a 94 Ghz monopulse radar transmitter/receiver. Several architectural approaches are considered, including passive and active implementations of RF monopulse comparator networks. These architectures are enabled by a …
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Stealth technologies based on thin microwave FSS absorbers
… the effectiveness of this concept, a dipole antenna was designed to work at 10 GHz and placed above the metal surface of a 10x10x10 cm3 mock-up of a CubeSat. The installed radiation patterns of the CubeSat with and without the FSS absorber are compared to experimentally confirm that a major …