<p>This article presents the design, fabrication, and performance evaluation of a dual-polarized slotted array antenna for radar applications. The proposed antenna operates in the X-band, covering 9.5–9.7&#xa0;GHz (S₁₁ ≤ –10&#xa0;dB) for vertical polarization and 9.2–9.7&#xa0;GHz (S₁₁ ≤ –13&#xa0;dB) for horizontal polarization. The novelty of this work focuses on the development of a dual-polarized slotted waveguide array antenna with non-inclined radiation slots unit cell with two irises and an innovative corporate feed network utilizing curved waveguides to minimize mutual coupling and fabrication complexity for horizontal polarization. Such a configuration provides high isolation, broad bandwidth, and high gain. Through unit cell optimization, the designed antenna achieves cross-polarization levels below − 40&#xa0;dB and antenna isolation exceeding 47.5&#xa0;dB. The array configuration consists of 10 × 10 elements for vertical polarization and 12 × 10 elements for horizontal polarization, delivering peak measured gains of at least 26.47&#xa0;dBi and 27.03&#xa0;dBi, respectively, across the operational frequency band. The experimental results validate that the antenna exhibits remarkable electromagnetic performance and mechanical stability, which is applicable to radar imaging.</p>