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Electromagnetics and Photonics Commons™
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- Antennas (5)
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- 5G (2)
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- Altair FEKO (1)
- Antenna Design (1)
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Articles 1 - 9 of 9
Full-Text Articles in Electromagnetics and Photonics
Electromagnetic Simulations For Vulnerable Road User Safety In 5g/6g Wireless Systems, Colin Mcnerny
Electromagnetic Simulations For Vulnerable Road User Safety In 5g/6g Wireless Systems, Colin Mcnerny
Theses and Dissertations
Protecting vulnerable road users is imperative. As 5G wireless technology matures and 6G standards are established, new operational technology emerges to reduce traffic accidents. There is widespread evidence to support the need for pedestrian awareness in modern traffic ecosystems as a significant number of vulnerable road users are injured or killed every year due to observable traffic failures. Computational electromagnetic (CEM) solvers are used to model, simulate, and analyze the performance of antennas deployed to meet this challenge. Validation studies using the Altair FEKO CEM solver demonstrate scenarios where vulnerable road users are at risk. The simulation data in this …
Performance Of Siso And Mimo Antenna Systems In Suburban And Urban Scenarios For V2i Communications At 5.9 Ghz And 28 Ghz, Oluwaseun Falade
Performance Of Siso And Mimo Antenna Systems In Suburban And Urban Scenarios For V2i Communications At 5.9 Ghz And 28 Ghz, Oluwaseun Falade
Theses and Dissertations
As the need for Vehicle to Infrastructure (V2I) innovations increases, further research is needed to test the performance of antennas installed on vehicles in realistic scenarios including their radiation patterns and optimal location. This thesis considers realistic suburban and urban scenarios with SISO and MIMO antennas for V2I systems at 5.9 GHz and 28 GHz. The simulation is based on Ray tracing (RT) channel models to accurately model the effects of obstacles such as buildings and vehicles on the communication signals. Time-varying vehicular environments are simulated using a 3-D RT tool involving a vehicle and a base station. This research …
Novel Compact Mimo Antenna Array Structures For 5g, Wi-Fi 6 And Vehicular Applications, Sulaiman Tariq
Novel Compact Mimo Antenna Array Structures For 5g, Wi-Fi 6 And Vehicular Applications, Sulaiman Tariq
Theses and Dissertations
Due to the fast development of wireless communication applications, the study of Multiple Input Multiple Output (MIMO) communication systems has lately gained comprehensive research interests since it can significantly increase the channel capacity and link reliability without sacrificing bandwidth and/or power transmitted. However, the user equipment is constantly shrinking in size to support more applications and satisfy aesthetic needs, which increases the need for more compact, high-performance antenna array designs. Many techniques are being constantly developed to combat the effects of mutual coupling that arise with the miniaturization of MIMO arrays. This dissertation focuses on designing, testing, and evaluating new …
Design Synthesis Of Flexible Antennas Using Artificial Neural Network, Ali Isam Hammoodi
Design Synthesis Of Flexible Antennas Using Artificial Neural Network, Ali Isam Hammoodi
Theses and Dissertations
Nowadays, flexible devices have witnessed a great deal of interest in both industrial and academia. Consistently, flexible electronic systems require the integration of a conformal and flexible antenna operating in specific frequency bands to provide wireless connectivity which is highly demanded in today’s information-oriented society. Designing of microstrip antenna has become the focus of modern technologies due to their light weight, ease of fabrication, and ability to integrate electronics devices. Simple structure such has square patch, circular patch, or rectangular patch are easy to maintain using empirical equations which based on some experimental results. However, more complicated structures are hard …
Novel Approaches For Mutual Coupling Reduction Among Vertical And Planar Monopole Elements, Ayman Abbosh Isaac
Novel Approaches For Mutual Coupling Reduction Among Vertical And Planar Monopole Elements, Ayman Abbosh Isaac
Theses and Dissertations
Modern wireless systems such as 4G LTE-A, RFID, Wi-Fi, WiMAX, and GPS utilize miniaturized antenna array elements to improve performance and reliability through diversity and increase throughput using spatial multiplexing schemes of MIMO systems. One original contribution in this thesis is to significantly reduce the complexity of traditional design approaches targeting mutual coupling reductions such as metamaterials, defected ground plane structures, soft electromagnetic surfaces using novel design alternatives. A decoupling network is proposed, which consists of a rectangular metallic ring along with two tuning strips printed on a dielectric substrate, surrounding a two-element monopole antenna array fed by a coplanar …
Miniaturized Wideband Planar Soft Surfaces For Mutual Coupling Reduction Between Antenna Elements, Said A. Abushamleh
Miniaturized Wideband Planar Soft Surfaces For Mutual Coupling Reduction Between Antenna Elements, Said A. Abushamleh
Theses and Dissertations
Miniaturized electromagnetic soft surfaces have promising applications in contemporary wideband portable wireless devices including, Multiple Input Multiple Output (MIMO) systems, dual frequency applications, and mutual coupling reduction among antennas in user terminals utilizing MIMO schemes such as in 4th generation Long-Term Evolution (4G-LTE). The use of textured metallic surfaces over grounded dielectric slab with vias for the suppression of electromagnetic wave propagation for applications including, but not limited to, mutual coupling reduction among closely-spaced antenna elements in antenna arrays, bandwidth enhancement, and gain enhancement has been extensively researched during the past two decades. In this dissertation, novel one-dimensional (1-D) periodic …
Design, Fabrication, And Testing Of Flexible Inkjet-Printed Antennas, Yahiea M. H. Al-Naiemy
Design, Fabrication, And Testing Of Flexible Inkjet-Printed Antennas, Yahiea M. H. Al-Naiemy
Theses and Dissertations
During the past four decades, microstrip antennas have attracted much attention due to their thin profile, ease of fabrication, low cost, and conformability. Inkjet-printing flexible antennas using highly conducting patterns can complement and extend the above-mentioned advantages to achieve modern, clean, fast, and reliable antenna fabrication technologies. Moreover, the use of nanoscale materials allows for the development of a new generation of modern printed circuit antennas. In this thesis, several microstrip antennas are presented with different geometries on both rigid and flexible substrates. The antennas were designed and simulated using two different 3D full-wave electromagnetic simulation tools: Ansoft's High Frequency …
Novel Metamaterial Based Antennas For Flexible Wireless Systems, Haider Khaleel
Novel Metamaterial Based Antennas For Flexible Wireless Systems, Haider Khaleel
Theses and Dissertations
Recent years have witnessed a great deal of interest from both academia and industry in the field of flexible electronic systems. This research topic tops the pyramid of research priorities requested by many national research agencies. Consistently, flexible electronic systems require the integration of flexible antennas operating in specific frequency bands to provide wireless connectivity which is highly demanded by today's information oriented society. On the other hand, metamaterials have become very popular in the design of contemporary antenna and microwave devices due to their wide range of applications derived from their unique properties which significantly enhances the performance of …
Novel Antennas Based On Innovations In Nano-Scale And Metamaterial Structures, Taha A. Elwi
Novel Antennas Based On Innovations In Nano-Scale And Metamaterial Structures, Taha A. Elwi
Theses and Dissertations
This dissertation focuses on the use of nano-scale and metamaterial structures for modern antenna applications including wearable devices, Global Positioning Systems, and self-powered wearable systems. Conductive composites, thin films, and array crystallography are nanostructural materials with superior properties that can be applied to printed electronic circuits, antennas, and optoelectronic devices. The feasibility of using conductive multi-walled carbon nanotube composites for printing patch antennas operating in the microwave range is demonstrated for the first time. A flexible meander sinusoidal patch based on a thin film of copper is presented for wearable medical telemetry devices. The effects of twisting and bending on …