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Electrical and Computer Engineering
With the rapid growth of wireless systems and corresponding low-power integrated electronic circuits, researchers have been studying the practicability of powering these systems and circuits by harvesting ambient electromagnetic (EM) energy. The design of microstrip antennas have been the most rapidly developing research field in the last thirty years. Currently, these antennas are applied in mobile radio systems, integrated antennas, satellite navigation receivers, satellite communications, and direct-broadcast radio and television. The considerable interest in microstrip antennas is due to their advantages compared to conventional microwave antennas. Microstrip antennas are lightweight, low volume, conformable, and easy to fabricate. In this paper, a dual-band microstrip patch antenna is designed to radiate at 900 MHz and 1.8 GHz. Two rectangular microstrip patch antennas were designed for the two frequencies of interest. A dual-band octagonal microstrip patch antenna is designed using the dimensions of two rectangular microstrip antennas with a novel technique. The antenna consists of two dielectric substrate layers that are stacked together. On the first layer, the octagonal patch is placed. The second layer has a proximity coupling feed with ground plane on the bottom layer. The antenna can be used to harvest the energy from Wi-Fi and other widely spread mobile networks. The dual-band antenna has good bandwidth, gain and radiation characteristics at the frequencies of interest. It has also a small form factor in comparison to conventional microstrip patch antennas. The simulated and measured results show good agreement.
Rivera, Francisco, "Microstrip Antenna Design for Energy Harvesting" (2018). 2018 IPFW Student Research and Creative Endeavor Symposium. 22.