Papers by Abdulaziz Dessalew Tadesse
International Journal of RF and Microwave Computer-Aided Engineering, 2020
Metamaterials are assemblies of metallic and/or dielectric materials with properties that are not... more Metamaterials are assemblies of metallic and/or dielectric materials with properties that are not readily found in naturally existing materials. Hence, metamaterial structures are commonly loaded on/near the patch, embedded in the substrate, loaded/etched from the ground plane or placed as a superstrate layer for enhancing bandwidth and gain, and size miniaturization of conventional patch antennas. The demand for wide bandwidth, high gain, and compact antennas is highly contemplated in recent wireless communication research studies. Despite their lightweight, ease of fabrication, low profile, and simplicity for integration, patch antennas have performance limitations as result of their narrow bandwidth, lower gain, larger size, and lower power handling capacity. To address these problems, metamaterial-based antennas have gained massive interest. There exist inadequate literatures about review of current state of extensive study reports on metamaterial application for patch antenna performance enhancement. Thus, this paper has reviewed and discussed latest research works on metamaterial applications for performance enhancement of planar patch antennas.
International Journal of RF and Microwave Computer-Aided Engineering, 2021
IETE Journal of Research, 2021
An internal planar inverted-F antenna (PIFA) for 2.4 GHz Bluetooth and 5 GHz WLAN applications is... more An internal planar inverted-F antenna (PIFA) for 2.4 GHz Bluetooth and 5 GHz WLAN applications is presented. The proposed antenna has an impedance bandwidth of 110 MHz in Bluetooth band and 900 MHz near 5 GHz in WLAN band within 2:1 VSWR, and an approximately omnidirectional radiation pattern can be obtained. These features are suitable for 2.4=5 GHz WLAN applications.
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Papers by Abdulaziz Dessalew Tadesse