Double-polarization Slotted Arrays for Extremely Low Side-lobe Based on Single-ridged Waveguide

This paper presents a double-Polarization waveguide slotted arrays for extremely low side-lobe. It consist of rectangular waveguides which can radiate horizontal polarized electromagnetic wave and single-ridged waveguides used to radiate vertical polarized electromagnetic wave. Using the single-ridged waveguides can reduce the distance of elevation, so that a larger scanning angle can be realized. The waveguide slotted array consists of 64 row lines and the gain is greater than 45.7 dB, futher more, the side-lobe level of azimuth is better than −35 dB.