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:
Dec. 02, 1997
Filed:
Aug. 16, 1996
Vladimir Manasson, Los Angeles, CA (US);
Lev S Sadovnik, Irvine, CA (US);
WaveBand Corporation, Torrance, CA (US);
Abstract
Systems and methods for optically controlled phase shifters are described. An apparatus includes a proximal rib waveguide; a phase shifter connected to the proximal rib waveguide, the phase shifter including: a first plasma induced modulator connected to the proximal rib waveguide, the first plasma induced modulator having a first transmission coefficient a and including: a first branch waveguide connected to the proximal rib waveguide; and a first photosensitive semiconductive plasma injector connected to the first branch waveguide; a second plasma induced modulator connected to the proximal rib waveguide, the second plasma induced modulator having a second transmission coefficient b and including: a second branch waveguide connected to the proximal rib waveguide; and a second photosensitive semiconductive plasma injector connected to the second branch waveguide; and a third plasma induced modulator connected to the proximal rib waveguide, the third plasma induced modulator having a third transmission coefficient c and including: a third branch waveguide connected to the proximal rib waveguide; and a third photosensitive semiconductive plasma injector connected to the third branch waveguide. The transmission coefficients a, b and c are each .ltoreq.1. The systems and methods provide a substantial improvement in that a phased array antenna can be steered with the optically controlled phase shifters using much less controlling energy.