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Radial Line Slot Antenna Design With Groove Gap Waveguide Feed for Monopulse Radar Systems

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Radial line slot arrays (RLSAs) are well suited to be used in monopulse radar systems. The excitation of the sum and difference patterns can be achieved by the design of… Click to show full abstract

Radial line slot arrays (RLSAs) are well suited to be used in monopulse radar systems. The excitation of the sum and difference patterns can be achieved by the design of simple feeds as shown in this paper. In this work, a feed system based on the use of a cavity made in groove gap waveguide technology (GGW) is presented. The design is made at 24 GHz but can be easily scaled to higher frequencies as the technology is contact-less and fully made in metal. A good isolation between the sum and difference ports together with a good matching of the two of them is obtained. The radiation patterns of the manufactured antenna are also in good agreement with the simulated ones.

Keywords: monopulse radar; radar systems; radial line; groove gap; line slot; design

Journal Title: IEEE Transactions on Antennas and Propagation
Year Published: 2019

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