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:
Jun. 24, 1986
Filed:
Mar. 01, 1985
Applicant:
Inventor:
Piero Vita, L'Aquila, IT;
Assignee:
Selenia Spazio, L'Aquila, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333157 ; 333 / ; 333 33 ; 333156 ;
Abstract
Differential phase-shifter operating in a wide frequency band, with constant differential phase shifting. This device is characterized by the fact that it produces a differential phase shift between two perpendicular polarizations, with constant frequency. This way, differential phase shifters with the desired flatness in the band can be obtained, either of 180.degree. (polarizers for systems of linear polarization) or of 90.degree. (polarizer for transforming the circular polarization into linear polarization and vice versa). Such a phase shifter can be used generally in antenna systems.