The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2007
Filed:
Feb. 28, 2006
The-nan Chang, Taipei, TW;
Bor-tsong Chen, Taipei, TW;
The-Nan Chang, Taipei, TW;
Bor-Tsong Chen, Taipei, TW;
Tatung Company, Taipei, TW;
Abstract
The present invention relates to a reflecting board for a microstrip reflectarray antenna and, more particularly, to a reflecting board with variable slot size that can improve the design flexibilities of the reflecting board and reduce the sensitivity to the manufacturing tolerances of the microstrip reflectarray antenna. The reflecting board comprises a bottom substrate having a first lower surface, and a top substrate. Plural first microstrip antenna patches, and plural second microstrip antenna patches with rectangular slots are disposed on the upper surface and the second lower surface of the top substrate, respectively. The area of the second microstrip antenna patches is larger than that of the first microstrip antenna patches. Besides, the ratio of the maximum border-length of the rectangular slot to the maximum border-length of the corresponding second microstrip antenna patch is identical for each second microstrip antenna on the second lower surface of the top substrate.