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A Reconfigurable Notched Band Monopole Antenna for C-Band Applications

Samar A. Refaat 1, Hesham A. Mohamed 2, Abdelhady M. Abdelhady 1, and Ashraf S. Mohra 1
1. Electrical Engineering Department, Benha Faculty of Engineering, Benha University, Benha, Egypt
2. Microstrip Department, Electronics Research Institute (ERI), Cairo, Egypt

Abstract—In this paper, a wideband monopole antenna with reconfigurable frequency notch through wireless local area network (WLAN) (5.15-5.35GHz and 5.725-5.825GHz) or future wireless fidelity 6GHz (Wi-Fi-6E) (5.925-7.125GHz) band for C-band applications is presented. The conventional/basic monopole antenna consists of four-leaf clover antenna structure with cascaded feeder and Defected Ground Structure (DGS). The basic antenna is designed and then simulated using Computer Simulation Technology (CST) and High-Frequency Structure Simulator (HFSS) readymade software programs. The antenna covering an operational bandwidth extends from 4.2GHz to 9.2GHz while the gain is around 4.0dBi. Two simple resonator conductors are added near the thin feeder of antenna to realize the notched frequency. The rejected frequency within WLAN or Wi-Fi 6E bands is controlled by the resonator conductor lengths, so Positive-Intrinsic-Negative (PIN) diodes switches are inserted to achieve the required length for each rejected band. Finally, each of the basic antenna and the proposed notched antenna are fabricated and measured. The measurement results are in good agreements with the simulated results of CST and HFSS, providing good antenna performance and sharp notches with good rejection values.
Index Terms—Wideband monopole antenna, WLAN/Wi-Fi 6E, rejected frequency, PIN diodes, reconfigurable, C-band applications

Cite: Samar A. Refaat, Hesham A. Mohamed, Abdelhady M. Abdelhady, and Ashraf S. Mohra, "A Reconfigurable Notched Band Monopole Antenna for C-Band Applications," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 10, No. 6, pp. 389-396, November 2021. Doi: 10.18178/ijeetc.10.6.389-396

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