A Dual-Polarized One-Dimensional Phased-Array Antenna in X-Band

The difficulty of double-polarized one-dimensional phased-array antenna with large-angle scanning is to realize two differently polarized radiating elements in the interval of nearly half wavelength. In the X-band, the spacing should be controlled within 17 mm. Under the technical requirements of power, efficiency and environment, based on the comparison of microstrip oscillator, SIW slot, waveguide slot and single-ridge waveguide slot, it is determined that a double-polarized antenna row element consisting of the single-ridge waveguide broad-wall slot with vertically polarized waves and rectangular waveguide narrow-wall slot with horizontally polarized waves realizes a one-dimensional scanning of phased array on the vertical. The computer-aided method is used to calculate the active admittance in the crack and the gap conductance function. Finally, the feasibility of the design is verified by electromagnetic simulation.