New Design Antenna and Optimization of S‐Band Radar Networks Using CSRR Technology

In this paper, a new design and analysis of a highly compact metamaterial antenna array for radar applications operating in the S‐band (2–4 GHz) is presented. To enhance the electrical and radiation characteristics of the proposed antenna, a slot was introduced into the radiating element, and a novel power divider was employed. The antenna structure incorporates a metamaterial complementary split‐ring resonator (CSRR). The results show that at a resonant frequency of 2.55 GHz, the proposed antenna exhibits a reflection coefficient ranging from −32 to −10 dB. When the two‐element array is assembled, the radiation gain increases to 6.4 dB, with an efficiency of 91.24%. Furthermore, the antenna array provides a complete 360° coverage, enabling omnidirectional and continuous scanning. This feature is crucial for radar applications, as it ensures optimal target detection throughout the entire radar perimeter, without blind spots or interruptions.