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 66 for “"HFSS"”.
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Simulation of Rectangular, Single-Layer, Coax-Fed Patch Antennas Using Agilent High Frequency Structure Simulator (HFSS)
… the Agilent High Frequency Structure Simulator (HFSS) as an effective tool for modeling electromagnetic structures. It presents a comprehensive and meticulous description of the process of modeling a rectangular coax-fed patch antenna in HFSS. Plots of S-parameter values are calculated and are …
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Challenges and Opportunities for Member States to Implement Resolution WHA63.14 to Restrict the Marketing of Unhealthy Food and Non-alcoholic Beverage Products to Children to Decrease Global Obesity and Non-Communicable Disease Risks by 2025
… beverage products high in fat, sugar and salt (HFSS) es is a significant driver of obesity and diet-related non-communicable diseases (NCDs). This PhD dissertation examined the factors related to Member States' capacity and actions to fully implement the 2010 World Health Assembly's Resolution …
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Efeito de dieta hipersódica e hiperenergética no remodelamento do tecido adiposo branco e marrom de camundongos C57BL/6
… alimentados com dieta controle (C) ou dieta HFSS (high fat, sucrose and salt) por 6 ou 12 semanas, e com dieta HFSS por 6 semanas seguido de dieta controle (HFSS->C), totalizando em dez grupos experimentais (n=15/grupo). A massa corporal e a ingestão hídrica foram aferidas semanalmente e a …
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Theory, Simulation, Fabrication and Testing of Double Negative and Epsilon Near Zero Metamaterials for Microwave Applications
… commercial finite element method solver: Ansoft HFSS. Metallic inclusions such as the split ring resonator structure (SRR), S-shaped split ring resonator (SSRR), wire rod and capacitively loaded strip (CLS) are presented analytically and simulated in HFSS. Metamaterial structures designed to …
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HIGH-PERFORMANCE PERIODIC ANTENNAS WITH HIGH ASPECT RATIO VERTICAL FEATURES AND LARGE INTERCELL CAPACITANCES FOR MICROWAVE APPLICATIONS
… and mathematical analyses and is referred to as HFSS/Bloch method. The numerical part of this method is conducted using a High Frequency Structure Simulator (HFSS), and the mathematical part is based on the classic Bloch theory. The HFSS/Bloch method acts as the mainstay of the thesis and all …
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Structural-Electromagnetic Simulation Coupling and Conformal Antenna Design Tool
… ADT is optimized for are MSC NASTRAN and ANSYS HFSS. Specifically, ADT is designed to generate a deformed 3D Computer Aided Design (CAD) model from a NASTRAN structural mesh. The resulting CAD model is compatible with HFSS electromagnetic simulation software for the assessment of the effects of …
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Novel photonic band gap structures for accelerator applications
… PBG resonators were modelled with Ansoft HFSS code, and a single-mode PBG resonator was designed. The HFSS design of a travelling-wave multi- cell PBG structure was performed. The multicell structure was built, cold-tested and tuned. Finally, the hot-test PBG accelerator demonstration was …
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Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas
… (circumferential) modes was conducted in Ansys HFSS. It was discovered that the input impedance bandwidth of the CRMA TM01 mode more than doubled, while that of the TM10 mode remained virtually unchanged, as the cylinder radius was decreased from infinite, planar, to approximately 0.15 free …
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Sequence Stratigraphy and Chemostratigraphy Across the Permo-Triassic Extinction Event, Upper Khuff Carbonates, Ghawar Field, Saudi Arabia
… global cycles. Seven high frequency sequences (HFSs) make up the Changhsingian upper Khuff C. These HFSs are ~400 k.y. duration and probably driven by long term eccentricity. The Early Triassic Khuff B and A sequences are made up of 4 HFSs each, which appear to be ~100 to 200 k.y. duration and …
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AN INVESTIGATION OF SHORT RANGE ELECTROMAGNETIC WAVE COMMUNICATION FOR UNDERWATER ENVIRONMENTAL MONITORING UTILISING A SENSOR NETWORK PLATFORM
… in a High Frequency Simulator Structure (HFSS) but were found unsuitable for use underwater. A 433MHz bowtie antenna was modelled in HFSS and shown to perform well in both air and potable water without any matching circuit. The antenna was prototyped on a printed circuit board, …
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Outcrop-derived facies model and cycle architecture of the Tansill G27-G28 high-frequency sequences, Rattlesnake Canyon, New Mexico
… of the G25 and G26 (Hairpin and Triplet) HFSs had been resolved. Distinct bedding planes within each measured sections were correlated using photomosaic panels of the canyon walls and airborne LIDAR-based digital outcrop models, creating a high degree of certainty when correlating and …
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Design and Modelling of Passive UHF RFID Tags for Energy Efficient Liquid Level Detection Applications. A study of various techniques in the design, modelling, optimisation and deployment of RFID reader and passive UHF RFID tags to achieve effective performance for liquid sensing applications
… design results analysed and presented in HFSS and Matlab. The optimised rectangular tag designs are then deployed as level sensors in a gully pot. Identical tags were deployed to detect 4 distinct levels in alternate positions and a few inches in seperation distance within the gully pot …
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Control System Design for a Solar Receiver-Reactor
… University (ANU) high-flux solar simulator (HFSS) facility. A system-level description of the novel concentrated solar power (CSP) station was used to highlight the general control objectives, which were found to be: (1) the control of exhaust temperature and; (2) the maximisation of …
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Investigation of a Novel Dual Band Microstrip/Waveguide Hybrid Antenna Element
… element. Finite Element Method based software, HFSS and Method of Moments based software, FEKO were employed to perform parametric studies of the proposed dual band antenna. The antenna was not tested physically. Therefore, in most cases, both HFSS and FEKO were employed to corroborate the …
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Optimization of microwave devices
… of the algorithm with a 3D Simulation CAD (HFSS, CST). The microwave devices under test are a ridge waveguide (in different configurations), a resonant cavity, a waveguide impedance transformer and an electromagnetic band gap structure. Both the approaches result to be effective for the …
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Online Electromagnetic Wave Monitoring System for Petroleum Industry Applications
… two phase. Both the experiment results and the HFSS results are compared and analysed. A sensor for measuring multiphase flow (oil, gas, and water mixtures) in a pipeline in real time is developed. We called it a EW wave (EMW3) sensor for multiphase fractions measurement. The emphasis is on the …
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Non-foster matching of an RFID antenna
… (Cadence), ADS software package (Agilent) and HFSS software package (ANSYS/ANSOFT Inc). Antennas have been designed, fabricated and tested; and a comparison of simulated and measured results were done. Further work is recommended to tune antennas to lower the return loss at operating frequency, …
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A Design Flow for Additively Manufactured 3D Metasurface Antennas
… use of automation for geometry creation in ANSYS HFSS, the work involved in making a MTS antenna can be greatly simplified. The overall objective of this thesis is to reduce the burden of constructing a MTS antenna by outlining a design flow for this process. First by characterizing a single …
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FPGA controlled reconfigurable antenna
… diodes. The electromagnetic modelling software HFSS is utilized to predict the resulting radiation patterns and resonances of the possible configurations. A computer program is created to interface a user with the FPGA controlling the antenna. A module for receiving instructions and asserting …
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Association between infant feeding practices and infant growth by maternal HIV and antiretroviral therapy status: A prospective study in Cape Town, South Africa
… feeding) and Household Food Security Status (HFSS) under the current era of universal Antiretroviral therapy (ART) in pregnancy policies in South Africa. Methods Pregnant women living with and without HIV were enrolled at their first antenatal visit. Feeding data and infant anthropometry were …
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