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An X-Band Phased Array Antenna with a Large Elliptical Aperture
Yoshihiko KUWAHARA Toru ISHITA Yoshihiko MATSUZAWA Yasunori KADOWAKI
IEICE TRANSACTIONS on Communications
Publication Date: 1993/10/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Radar Technology)
Category: Radar System
phased array, lens array, aperture efficiency monopulse, elliptical aperture,
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Monopulse technique is widely used for tracking radars. For tracking at a low elevation angle, a narrow beam is required in the elevation plane to reduce multipath signals such as gound reflections. In this case, an elliptical aperture is desired. We have developed an antenna with a high tracking accuracy and a high aperture efficiency which is composed of a monopulse feed and an elliptical aperture. In this paper we discuss a design of the feed through lens array with an elliptical aperture and a new monopulse feed. Evaluation test results of a production model proved validity of our design and showed good performance.