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Progress In Electromagnetics Research C
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RECONFIGURABLE BAND-NOTCHED SLOT ANTENNA USING SHORT CIRCUITED QUARTER WAVELENGTH MICROSTRIP RESONATORS

By H. A. Atallah, A. B. Abdel-Rahman, K. Yoshitomi, and R. K. Pokharel

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Abstract:
In this paper, a CPW feed ultrawideband (UWB) slot antenna with a single reconfigurable notched band is proposed for overlay cognitive radio (CR) systems. The proposed antenna utilizes two symmetrical short circuited quarter wavelength resonators at the top layer and close to the ground to create a single notch. The switching reconfiguration is achieved by changing the length of resonators to prevent the interference to the primary users that are operating in the wireless local area network (WLAN) band at 5.725-5.825 GHz and the international telecommunication union (ITU) band at 8.05-8.4 GHz. The center frequency of the notched band can be tuned by selecting the length of the resonators, which is achieved by employing two ideal switches. Moreover, the proposed antenna has been fabricated and tested. The experimental data confirmed that the proposed design can selectively have a band notch over the two existent desired bands.

Citation:
H. A. Atallah, A. B. Abdel-Rahman, K. Yoshitomi, and R. K. Pokharel, "Reconfigurable Band-Notched Slot Antenna Using Short Circuited Quarter Wavelength Microstrip Resonators," Progress In Electromagnetics Research C, Vol. 68, 119-127, 2016.
doi:10.2528/PIERC16081307

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