Miniaturized UWB antenna design for 5G and space-based microwave applications

• A UWB miniaturized antenna with a dimension of 13×14×1.5 mm³ is proposed for microwave applications in the 5G band. • Proposed design on FR4 substrate exhibits impedance bandwidth of 121.8%, S11 of -28 dB, radiation efficiency of 82.9%, and gain of 3.92 dBi. • The design is particularly suitable for communications in the 6G sub-band, S-band, C-band, and X-band. . This article presents an innovative Ultra-Wideband (UWB) Miniaturized Radiator tailored for microwave applications. The design addresses key challenges such as achieving broad impedance bandwidth, maintaining a compact form factor, and ensuring high radiation efficiency . Extensive simulations using CST Microwave Studio were conducted on a 13×14×1.5 mm³ FR-4 substrate to comprehensively evaluate the performance of the antenna. The proposed design exhibits notable features, such as an impressive 121.8% impedance bandwidth and a remarkable -28 dB (S 11 ). Ensuring consistent radiation patterns, the antenna guarantees reliable and efficient operation. It operates from 3.4 GHz to 14 GHz, with a middle point of 8.7 GHz, and an efficiency of 82.9% with delivers a wide gain of 3.92 dBi, making it quite suitable for many uses. Its design is particularly suitable for communications in the UWB, S-band, C-band, and X-band.