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• W2912248898 abstract "There is a continuous demand for wireless devices that can adapt to different channel characteristics, while operating on high transmission data-rates utilizing several communication bands. Cognitive Radio (CR), and Software-Defined Radio (SDR) emerge as a favorable settlement to improve spectrum utilization and maximize the usage of frequency bands between users. CR relies on dynamic resource sharing between primary and secondary users through frequency hopping facilitated by the attached SDR tunable antenna. This paper proposes efficient, flexible antenna array design with reconfigurable frequency bands through radio frequency switches (RF-switches) towards enabling a Software Defined Antenna (SDA). RF-switches are used to enable reconfigurable antennas to manipulate frequency, bandwidth, and directivity. The proposed antenna design is verified using Electromagnetic High Frequency Simulation Software (HFSS) tool. Moreover, we address extensive ON/OFF switching cases to determine the proper selection of RF-switch(s) configurations and types to best serve CR networks. The proposed antenna design can be integrated with programmable kits as front end radio element to dynamically enable band manipulation through software programs. Thence, we exploit a queueing model for better spectrum sharing between CR networks users. Results show the efficiency of using Field Effect Transistor (FET) as RF-switches for the proposed antenna design in CR networks." @default.
• W2912248898 created "2019-02-21" @default.
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• W2912248898 date "2019-04-01" @default.
• W2912248898 modified "2023-10-02" @default.
• W2912248898 title "Towards software defined antenna for cognitive radio networks through appropriate selection of RF-switch using reconfigurable antenna array" @default.
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• W2912248898 doi "https://doi.org/10.1016/j.aeue.2019.01.033" @default.
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