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 5 of 5 for “"RF Switching"”.
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Substrate Impurity Incorporation Mitigation for Improved AlGaN/GaN-ON-Si RF Performance
A conductive interface is formed between Silicon substrate and AlN nucleation layer during high-temperature deposition. This parasitic conduction path is highly detrimental as it is capacitively coupled to the GaN HEMT 2DEG channel. Moreover, the presence of significant lattice mismatch and thermal …
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High-Performance Gateless Iii-Nitride Microwave Switches
<p>Radio-frequency (RF) switches using Field-Effect Transistors (FETs) have low loss, fast switching speed, and simple fabrication process, which allows for simple integration with other components such as power amplifiers, phase shifters, arrays etc. Recent advancements in III-nitride …
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Unilateral and multi-functional RF front-end filtering networks using spatiotemporally modulated resonators arrays
… stringent demands on radio-frequency front-ends (RFFEs) requiring compact, reconfigurable, and multi-functional RF components that can reduce size, weight, power, and cost (SWaP-C) of the RFFE while maintaining high spectral efficiency and adaptability to a wide range of frequency bands, operating …
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Development of a Single-Channel Direction Finding Algorithm
… with a custom-designed antenna array and RF switching network. It uses a bank of parallel software PLLs to estimate the phase of the signal received at each element of the multi-antenna array. Theses estimated phase values are then fed to a specialized signal processing block that …
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Design and modelling of beam steering antenna array for mobile and wireless applications using optimisation algorithms. Simulation and measrement of switch and phase shifter for beam steering antenna array by applying reactive loading and time modulated switching techniques, optimised using genetic algorithms and particle swarm methods.
… printed dipole antenna integrated with a duplex RF switch used for mobile base station antenna beam steering was investigated. A coplanar waveguide (CPW) to coplanar strip (CPS) transition was adopted to feed the printed dipole. A novel RF switch circuit, used to control the RF signal fed to the …