Thesis
HIGH-PERFORMANCE FLEXIBLE ANTENNA DESIGN FOR IOT, HIGH-TEMPERATURE AND HIGH FREQUENCY APPLICATIONS
Washington State University
Master of Science (MS), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000005488
Handle:
https://hdl.handle.net/2376/119188
Abstract
The field of flexible antennas is witnessing exponential growth due to the demand for wearable devices, Internet of Things (IoT) framework, point of care devices, personalized medicine platform, 5G technology, wireless sensor networks, and communication devices with a smaller form factor to name a few. The choice of non-rigid antennas is application-specific and depends on the substrate type, materials used, processing techniques, antenna performance, and the surrounding environment. There are numerous design innovations, new materials and material properties, intriguing fabrication methods, and niche applications. The aim of this research is two-fold. Firstly, to review the need for flexible antennas, materials, and processes for fabricating the antennas, various material properties influencing antenna performance, and inherent applications, challenges, and prospects in wireless solutions. Secondly, propose a guideline for inkjet printing on a high-temperature sustainable thin ceramic substrate and design differently shaped flexible ultra-wideband (UWB) antennas on different substrate types. Initially, an insight into numerous design innovations, new materials and material properties, intriguing fabrication methods, and niche applications for flexible antennas were demonstrated. Next, the optimization of printing properties on a new, flexible ceramic substrate was determined to ensure an electrically conductive and repeatable pattern. After experimental investigation, the optimum printing parameters were found to be 20 μm drop spacing, three layers of printing, and 300 °C sintering temperature for 30 min. After that, a new ultra-wideband circular-shaped antenna operating over 2.52-17.82 GHz is realized on that ceramic substrate using the obtained optimum inkjet printing parameters. Next, the UWB antenna was fabricated on PET operating from 3.04-10.70 GHz, 15.18-18 GHz (partial Ku band). A new tuning fork-shaped flexible UWB antenna was also designed on PET substrate operating from 2.75 to 16.75 GHz with enhanced array structure gain. Finally, a new high-frequency antenna array design is proposed to keep pace with future IoT and high-frequency applications like satellite and radar communications with beam steering characteristics. The array antenna also operates in the upper X, Ku and K, partially Ka band with a high gain suitable for required applications.
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Details
- Title
- HIGH-PERFORMANCE FLEXIBLE ANTENNA DESIGN FOR IOT, HIGH-TEMPERATURE AND HIGH FREQUENCY APPLICATIONS
- Creators
- Sharadindu Gopal Kirtania
- Contributors
- Praveen Dr. Sekhar (Advisor)Tutku Dr. Karacolak (Committee Member)Feng Dr. Zhao (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- School of Engineering and Computer Science (VANC)
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 204
- Identifiers
- 99900592154401842
- Language
- English
- Resource Type
- Thesis