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  PIERS Online Vol. 3 No. 8 2007 pp: 1273-1277

Reflectarray with Variable-patch-and-slot Size

The-Nan Chang and Bor-Tsong Chen

doi:10.2529/PIERS070317040735

[PDF Full Text (303 KB)]
Downloads: 1345

Abstract:

Reflectarray using a variable-patch-and-slot (VPS) size method is presented. A slot as a new variable is added to the original variable patch (VP) size configuration. The slot plays a role to modify the original phase diagram. In some cases, it optimizes both sensitivity and bandwidth of a reflectarray. Based on this observation, we designed a reflectarray on an FR4 substrate. Experimental results show a maximum gain of 24.5 dB at 11.4 GHz with an aperture size of 19.5 cm × 25 cm. It has a 1.5 dB bandwidth of 19.3% and has an aperture efficiency of 31.48%. The cross-polarization level is bellow 25 dB.

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