Offset-Fed Metal-Only Reflectarray Antenna Designs

Abstract

In this work, we present two offset-fed metal-only reflectarray designs that are suitable for space applications in which the use of dielectrics is not desired. Crossed-slot type of elements are used to achieve the phase shift coverage of 360° in both of these reflectarray designs. Two illustrative design examples are presented. The first of these is a reflectarray which points the beam in the specular direction with the illumination incident from a feed horn that has a skew angle of 30°, while the second design points the beam at 0°, i.e., toward boresight. We present the simulated results of these designs and compare their performances. The simulated gain for the normal-directed beam is found to be 26.2 dBi at 35.6 GHz with an aperture efficiency of 25.5%, and the sidelobe level is -19dB. The corresponding values for the reflectarray with specular-directed beam are; gain of 28 dBi at 35.6 GHz, aperture efficiency of 35.4% and sidelobe level of -21dB.

Publication Date

7-25-2018

Publication Title

2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding

Number of Pages

1-3

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/APCAP.2017.8420640

Socpus ID

85051128365 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85051128365

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