LOW OBSERVABLE ANTENNA APPLIED TO X-WAVEBAND

摘要

Provided is a low observable antenna applied to an X-waveband. The low observable antenna applied to an X-waveband comprises a bottom-layer medium substrate unit, an upper-layer medium substrate unit and a foam layer arranged between the bottom-layer medium substrate unit and the upper-layer medium substrate unit, wherein a lower surface of the bottom-layer medium substrate unit is a metal plate; an upper surface of the bottom-layer medium substrate unit is metal units which are periodically arranged; an upper surface and a lower surface of the upper-layer medium substrate unit are metal units; the metal units on the upper surface of the bottom-layer medium substrate unit are rectangular with two opposite corners cut off; the center of the upper surface of the bottom-layer medium substrate unit is a rectangular metal patch antenna; the metal units on the upper surface and the lower surface of the upper-layer medium substrate unit are bent metal strips distributed along diagonals; and each of the centers of the metal strips on the upper surface and the lower surface of the upper-layer medium substrate unit is provided with at least one patch resistor. The present low observable antenna can realize low-frequency and high-frequency out-of-band RCS suppression, has a good in-band radiation performance, and can be used for microwave detection and antenna stealth.