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 14 of 14 for “"EBG"”.
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Wideband Electromagnetic Band Gap (EBG) Structures, Analysis and Applications to Antennas
… enhance the radiation efficiency of the antennas EBG structures are used, but they operate over a narrow band. Uniform electromagnetic band gap (EBG) structures are usually periodic structures consisting of metal patches that are separated by small gaps and vias that connect the patches to the …
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A Numerical Parametric Study on the Performance of a Low Profile dipole Planar Inverted Cone Antenna Placed over an Electromagnetic Bandgap Structure
Electromagnetic Band-gap (EBG) materials are a type of metamaterial with attractive properties not found in nature. EBG materials act as a high impedance surface over a specific frequency range, so they are a good candidate for replacing the conductive ground plane found in most low profile …
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Design, modelling and implementation of antennas using electromagnetic bandgap material and defected ground planes
… geometries using electromagnetic band gap (EBG) material and a defected ground plane. Several antenna applications are addressed with the aim of improving performance, particularly the mutual coupling between the elements. The EBG structures have the unique capability to prevent or assist …
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HIGH-PERFORMANCE PERIODIC ANTENNAS WITH HIGH ASPECT RATIO VERTICAL FEATURES AND LARGE INTERCELL CAPACITANCES FOR MICROWAVE APPLICATIONS
… antennas, including electromagnetic bandgap (EBG) antennas, which are distinguished in two respects. First, the periodic cells contain thick metal traces, contrary to the conventional thin-trace cells. Second, such thick traces contain very narrow gaps with very tall sidewalls, referred to as …
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Design of electromagnetic band-gap structures using planar technology for Rfid and microwave applications
… de nuevas estructuras Electromagnetic Band-Gap (EBG) 1 Artificial Magnetic Conductors (AMC), para sistemas de comunicación, que proporcionan una mejor funcionalidad y rendimiento, tanto solas como en combinación con antenas. El gran potencial de desarrollo de estas novedosas estructuras ofrece …
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Analysis and Design of a Wideband Dual-Polarized Antenna Based on the Principle of Huygens' Source
… antenna by embedding an electromagnetic bandgap (EBG) structure is investigated. Analysis for unit-cells of mushroom-like and wideband uniplanar EBG structures is performed, and simple monopoles are used for exciting the EBG embedded antenna. The presented antennas find many possible applications …
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Microstrip patch array rectenna with harmonic suppression capability for energy harvesting application
… is integrated with electromagnetic bandgap (EBG) and filter. The microstrip patch array antenna is etched on FR-4 substrate with thickness of 1.6 mm and the dielectric constant of 4.4. The antenna is designed and simulated using the Computer Simulation Technology (CST) Microwave Studio …
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Design, Investigation and Implementation of Hetrogenous Antennas for Diverse Wireless Applications. Simulation and Measurement of Heterogeneous Antennas for Outdoor/indoor Applications, including the Design of Dielectric Resonators, Reconfigurable and multiband DR antennas, and Investigation of Antenna Radiation Performance and Design Optimization
… a compact conformal wearable CPW antenna using EBG-FSS for MBAN applications at 2.4GHz is proposed. They are designed using fabric materials suitable for daily clothing. The performance of the antenna is investigated in free space, on a layered biological tissue model, and on a real human body …
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Modeling nutrient requirements and measuring nutrient outputs of feedlot cattle
… from the test dataset for the HM is RE = (68.82*EBG)-(3.68*EBG^2)*EQEBW0.75/1000. Predicted RE of cattle in the validation dataset did not differ from observed RE for the NRC (P = 0.65) or HM (P = 0.49). The NRC model explained 78% of the variation in RE, with a 1.11% over-prediction bias and the …
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Nitrogen balance and nutrient requirements of young Nellore bulls fed with static or oscillating crude protein levels, and feeding behavior, water intake and requirements of bulls with different residual feed intakes
… was: NEg (Mcal/EBW0.75/d) = 0.0535 × EBW0.75 × EBG0.7131, where EBG is the empty body gain, and the efficiency was 24.25%. Net protein for gain (NPg) was: NPg (g/d) = 227.372 × EBG – 19.479 × RE. There was a linear increase for carcass, CP, and water present in the EBW as the animal grew. The EE …
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Anomalous Nature Of Metamaterial Inclusion and Compact Metamaterial-Inspired Antennas Model For Wireless Communication Systems. A Study of Anomalous Comportment of Small Metamaterial Inclusions and their Effects when Placed in the Vicinity of Antennas, and Investigation of Different Aspects of Metamaterial-Inspired Small Antenna Models
… metamaterial-inspired antenna with CRLH-TL and EBG is designed for multi-band: Satellite, LTE, WiMAX and WLAN.
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Application of electromagnetic-bandgap structures to power distribution network design
This thesis provides a detailed literature review and an original pattern design example of the application of an electromagnetic bandgap structure which suppresses the simultaneous switching noise in a power distribution network. By accommodating a metalized periodic pattern on either power or …
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RELATIVISTIC BACKWARD WAVE OSCILLATOR WITH A GAUSSIAN RADIATION PATTERN AND RELATED TECHNOLOGIES
… a periodic SWS with an electromagnetic band gap (EBG) medium for coupling and extracting a Gaussian radiation pattern is presented. Finally, it is well known that the power handling ability of a single RBWO is limited by material technology. Since it is always desired to generate higher microwave …
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Single Layered Periodic Structure Loaded Textile Patch Antennas
… structures, namely Electromagnetic Band Gap (EBG) structures.</p> <p>The third chapter covers wearable antennas, with and without periodic structures, and their applications. A review of surface waves and wave modes is given. This review produces a picture of how this once un-utilized energy …