Design of a Novel Efficient High-Gain Ultra-Wide-Band Slotted H-Shaped Printed 2×1 Array Antenna for Millimeter-Wave Applications with Improvement of Bandwidth and Gain via the Feed Line and Elliptical Edges

Tibermacine Badreddine (Departement of Electrical Engineering, Laboratory of Metallic and Semiconducting Materials (LMSM), Biskra University, 37 Salah Bey Road, BP 07000, Biskra State, Algeria)
Hamaizia Zahra (Departement of Electrical Engineering, Biskra University, Pont Blonc 100 Logements Bloc 5, BP 23000, Annaba State, Algeria)
Guesbaya Tahar (Departement of Electrical Engineering, Biskra University, 20 El-Allia Road, BP 07000, Biskra State, Algeria)

Journal of Engineering and Technological Sciences
Vol. 55 No. 1 (2023)

This paper describes design procedure of a high-performance miniaturized antenna with an array configuration, which contributes to enhancing the communication system’s performance. The basic antenna features a compact size (6 x 6) mm2, and its single element is an H-shaped slotted patch printed on the top side of a Rogers RT5880 substrate, with a relative permittivity and thickness of 2.2 and 0.3 mm, respectively. The edge-to-edge distance of the 2 × 1 array antenna is 9 x 14 mm2, and the isolation between its radiation elements is 4.5 mm. To increase the capabilities of the antenna in terms of gain and bandwidth, we proceeded to use the 2 × 1 array configuration and then optimized the model via either the width of the feed line or the elliptical edges of the patch. The miniaturized array antenna achieved a peak gain of 12.56 dB, a directivity of 13.11 dBi, and a return loss of -47.52 dB at a resonance frequency of 91.5 GHz, with a radiation efficiency of more than 91% over an operating bandwidth of 15.83 GHz, ranging from 79.7 GHz to 95.6 GHz. The design and simulation results of the proposed antenna were obtained using the CST Studio software.