Radial line slot antenna design for monopulse Space Debris Radar

This paper shows the design of a radial line slot antenna for Space Debris Radar Applications. The monopulse antenna has two beams, sum and difference, and requires an amplitude and phase receiver for detection of the azimuth and elevation direction of arrival. The antenna is circular polarized, and this paper focus on the design of the receiver antenna. The paper shows the optimization process of the position and length of slots in the central frequency of 94 GHz and a first analysis of the feeding network. This design will be tested with the fabrication of a prototype.