New design of a linear double‐sided printed dipole array based on bat algorithm for interference suppression in the first sidelobe direction. Issue 12 (21st July 2020)

• Record Type: Journal Article
• Authors: Truong, Luong Xuan; Vu‐Bang Giang, Truong; Tuan, Tran Minh
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 12(2020)
• Page Start: 1371
• Page End: 1376
• Publication Date: 2020-07-21
• Subjects: microstrip antenna arrays -- dipole antenna arrays -- antenna feeds -- antenna radiation patterns -- interference suppression -- reflector antennas; excitation power distribution -- bat algorithm -- amplitude‐only control technique -- FR4 substrate -- FSLL -- null deep level -- linear double‐sided printed dipole array -- interference suppression -- sidelobe direction -- double‐sided printed dipole antenna array -- Rogers RO4003C -- single null -- series‐fed network -- back reflector -- E‐plane -- DSPD antenna array -- frequency 3.3 GHz to 3.9 GHz -- bandwidth 600.0 MHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2019.1065
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : This study proposes a design of a double‐sided printed dipole (DSPD) antenna array with a low first sidelobe level (FSLL) for interference suppression. The proposed array consists of ten DSPD antennas based on the Rogers RO4003C substrate ( ɛr = 3.55). The FSLL has been compressed by imposing a single null at the centre of the first sidelobe. The excitation power distribution of the array has been calculated by using the bat algorithm with the amplitude‐only control technique and has been implemented by a series‐fed network. A back reflector, which is based on an FR4 substrate ( ɛr = 4.4), has been used to improve the maximum gain. The simulation results show that the FSLL can be reduced with a null deep level (NDL) of −40 dB in the E ‐plane at the frequency of 3.5 GHz, while the maximum gain of the array is around 17.7 dBi, and the bandwidth is 600 MHz (3.3–3.9 GHz) with −10 dB of S 11 . A prototype of the proposed DSPD antenna array has been fabricated and measured. A good agreement can be achieved between simulation and measurement results.