Compact Metamaterial based Antenna for 5G Applications

This research paper presents the design and analysis of a compact antenna used for 5G applications using complementary split-ring resonator (CSRR) metamaterials. Here, we use FR4 epoxy substrate. Initially, a rectangular patch antenna with dimensions of 7.5 mm × 5.7 mm was designed, which exhibited resonance at 12 GHz. Subsequently, optimizations were made to the patch design, resulting in resonance at 5.88 GHz. Next, complementary split-ring resonator (CSRR) metamaterial was designed and integrated into the ground plane of the antenna. Following the introduction of the CSRR, the resonant frequency of the antenna was further reduced to 3.5GHz. The simulated results show that the antenna has a compact size of 12 × 12 × 1 mm³ and operates at a frequency of 3.5GHz with a bandwidth of 200 MHz, return loss of -20.41 dB and gain of -3.7dBi. We were able to achieve up to 92 % compactness from its usual size, after redesigning the patch and introducing the CSRR metamaterial. In conclusion, the proposed antenna design offers a compact and efficient solution for 5G communication systems using CSRR metamaterials. The results of this study can be used for the development of low-cost, compact and high-performance 5G antennas for various applications in the future.