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Electromagnetics and Photonics Commons™
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- Amorphous silicon (1)
- Antenna efficiency (1)
- Antenna gain (1)
- Antenna radiation patterns (1)
- Capacitive coupling (1)
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- Channel modeling (1)
- Fifth generation (5G) cellular networks (1)
- Geolocation (1)
- Inductive shorting (1)
- Interferometer (1)
- Lithography (1)
- Millimeter wave (mmW) (1)
- Nanosphere (1)
- Planar monopole antenna (1)
- Plasmonics (1)
- Ray tracing (RT) (1)
- Rough surface scattering (1)
- Scattering (1)
- Solar cell (1)
- Specific Absorption Rate (SAR). (1)
- Star tracker (1)
- Wireless sensor networks (WSNs) (1)
Articles 1 - 4 of 4
Full-Text Articles in Electromagnetics and Photonics
Nanosphere Lithography And Its Application In Rapid And Economic Fabrication Of Plasmonic Hydrogenated Amorphous Silicon Photovoltaic Devices, Chenlong Zhang
Nanosphere Lithography And Its Application In Rapid And Economic Fabrication Of Plasmonic Hydrogenated Amorphous Silicon Photovoltaic Devices, Chenlong Zhang
Dissertations, Master's Theses and Master's Reports
Solar photovoltaic (PV) devices harvest energy from solar radiation and convert it to electricity. PV technologies, as an alternative to traditional fossil fuels, use clean and renewable energy while minimizing pollution. For decades researchers have been developing thin film solar cells as an important alternatives to the relatively expensive bulk crystal solar cell technology. Among those, hydrogenated amorphous silicon (a-Si:H) solar cells prevails for good efficiency, non-toxic and materially abundant nature. However, a-Si:H thickness must be minimized to prevent light induced degradation, so optical enhancement is necessary. Light manipulation has to be applied and carefully engineered to trap light within …
Channel Modeling For Fifth Generation Cellular Networks And Wireless Sensor Networks, Amir Torabi
Channel Modeling For Fifth Generation Cellular Networks And Wireless Sensor Networks, Amir Torabi
Dissertations, Master's Theses and Master's Reports
In view of exponential growth in data traffic demand, the wireless communications industry has aimed to increase the capacity of existing networks by 1000 times over the next 20 years. A combination of extreme cell densification, more bandwidth, and higher spectral efficiency is needed to support the data traffic requirements for fifth generation (5G) cellular communications. In this research, the potential improvements achieved by using three major 5G enabling technologies (i.e., small cells, millimeter-wave spectrum, and massive MIMO) in rural and urban environments are investigated. This work develops SPM and KA-based ray models to investigate the impact of geometrical parameters …
Small Size Coupling Feed And Inductive Shorting Antenna For Wide Bandwidth, Increased Gain And Efficiency With Low Specific Absorption Rate (Sar) Operation, Md Mahfuzur Rahman
Small Size Coupling Feed And Inductive Shorting Antenna For Wide Bandwidth, Increased Gain And Efficiency With Low Specific Absorption Rate (Sar) Operation, Md Mahfuzur Rahman
Dissertations, Master's Theses and Master's Reports
Day by day technology is changing our lives rapidly. With these radical changes, demands in communication industry are also increasing drastically. To cope up with these demands, 2G, 3G, 4G, LTE (Long Term Evolution) communication systems have been introduced. Modern cellular phone should be capable to operate in wide range of frequency spectrum for their global access to provide end user customers these communication services. Hence mobile antennas should be designed in such a way that they should generate wideband operation. But commercially available standalone mobile antennas aren’t capable to operate in all those communication systems, several antennas are used …
Analysis On The Performance Limitations Of An Interferometric Geolocation Device, Michael Witt
Analysis On The Performance Limitations Of An Interferometric Geolocation Device, Michael Witt
Dissertations, Master's Theses and Master's Reports
GPS is a critical tool often used in terrestrial location and navigation. However, GPS relies on a system of satellites in medium earth orbit and is prone to dropouts at higher latitudes, and may be susceptible to spoofing or other attacks. Thus, it is prudent to examine possible alternatives. Recently, star tracking has been of interest in global positioning. There are many implementations of a star tracker using an imaging-based optical system to capture star locations in order to estimate position using celestial navigation techniques. These imaging systems are performance limited by blurring imposed by atmospheric turbulence, platform jitter, and …