A Patch Antenna with Enhanced Gain and Bandwidth for Sub-6 GHz and Sub-7 GHz 5G Wireless Applications

Abstract

This paper presents a novel microstrip patch antenna design using slots and parasitic strips to operate at the n77 (3.3–4.2 GHz)/n78 (3.3–3.8 GHz) band of sub-6 GHz and n96 (5.9–7.1 GHz) band of sub-7 GHz under 5G New Radio. The proposed antenna is simulated and fabricated using an FR-4 substrate with a relative permittivity of 4.3 and copper of 0.035 mm thickness for the ground and radiating planes. A conventional patch antenna with a slot is also designed and fabricated for comparison. A comprehensive analysis of both designs is carried out to prove the superiority of the proposed antenna over conventional dual-band patch antennas. The proposed antenna achieves a wider bandwidth of 160 MHz at 3.45 GHz and 220 MHz at 5.9 GHz, with gains of 3.83 dBi and 0.576 dBi, respectively, compared to the conventional patch antenna with gains of 2.83 dBi and 0.1 dBi at the two frequencies. Parametric studies are conducted to investigate the effect of the parasitic strip’s width and length on antenna performance. The results of this study have significant implications for the deployment of high-gain compact patch antennas for sub-6 GHz and sub-7 GHz 5G wireless communications and demonstrate the potential of the proposed design to enhance performance and efficiency in these frequency bands.

For wireless LAN application, microstrip patch antenna design in S-band

“…As a result of this comparison, a considerable improvement in the antenna gain is discovered, along with an acceptable size reduction. 3.5 GHz 1.88 [11] 3.5 GHz 5.3 [16] 3.6 GHz 2.52 [18] 3.5 GHz 4.2 [28] 3.5 GHz 4.57 4.90 5 [31] 3.5 GHz 6.05 [34] 3.5 GHz 5.43 [35] 3.29 GHz 3.38 [36] 3.36 GHz 1.07 [37] 3.5 GHz 5.8 [38] 3.45 GHz 3.83 [40] 3.5 GHz 4.28 [41] 3.45 GHz 4.64 [42] 3.5 GHz 3.338 4.66 5.08 This work 3.5 GHz 6.02 6. CONCLUSION A 3.5 GHz microstrip patch antenna has been designed in the said paper.…”

Recent Advances of 5G Technology Based on Patch Antenna: A Literature Review

“…Different applications have been shown by patch antennas. Because of their being light weight, having a low profile and efficient radiation, they are being tried for 5G systems and even 6G communication [8] [63]. In medical diagnosis among other fields, patch antennas of dual bands are designed to work at specified frequencies like 2.4 GHz and 3.33 GHz through slot configuration [17].…”

“…For instance, a study by Nassr and Khamiss proposed a patch antenna at 38 GHz with enhanced gain and reduced side lobes to meet the demands of 5G communication [7]. Additionally, Jusoh's research demonstrated the design of a novel patch antenna operating at sub-6 GHz and sub-7 GHz bands, showcasing wider bandwidth and improved gains compared to conventional designs [8]. Yoo and Son introduced a millimeter-wave patch antenna that Disclaimer/Publisher's Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s).…”

Design of higher gain linearly polarized 2×2 microstrip patch array antenna for wireless communication

“…The designed antenna has a frequency range that ranges from 3.8-4.4 GHz and the gain of 12.1 dB at 4.148 GHz [3]. With gain of 3.83 and 0.576 dB, antenna described in [4] has a broader BW of 160 MHz at 3.45 GHz and 220 MHz at 5.9 GHz. A sixteen element Ku/Ka-band multi-polarized antenna patch is built, and experimental results shows that impedance bandwidth of 19.4% (14.4-17.5 GHz) for dual linearly polarized (LP) and 7.4% (32.5-35 GHz) for dual circularly polarized (CP) may be achieved.…”