Design of Double Circular Microstrip Antenna for High Frequency Communication Application

In the modern trends of communications, there is a demand for antennas that are straightforward yet effective and reasonably priced. Microstrip antennas have become popular because of their versatility, lightweight nature, affordability, and ease of use. As the lower microwave bands are extensively utilized, there is a shift in focus towards the higher microwave bands. In this paper, we created the microstrip antenna consisting of two circular elements integrated in a microstrip arrangement and FR-4 (lossy) substrate with a size of $27 \mathrm{~mm} \times 26 \mathrm{~mm}$. With proper design and optimization, the double circular microstrip antenna can become an effective solution for high-frequency communication applications that require superior performance, wide bandwidth, and high efficiency. The results of an antenna operates in the frequency range of 25-35 GHz with a center frequency of 29.63 GHz. provides the minimum return loss of −50.45 dB. The VSWR obtained from Fig. 3 is 1.006, and the gain is 2.463 dBi. Based on the results of this paper, At this frequency, the antenna can be utilized for high-frequency communication, such as satellite communication, 5G, and other applications involving millimeter waves. By enabling efficient and reliable communication in these domains, it contributes to Sustainable Development Goals (SDGs) 9 (Industry, Innovation, and Infrastructure) by fostering technological advancement and supporting the development of robust communication infrastructure.