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:
Apr. 23, 2019
Filed:
Jun. 30, 2015
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
A beamforming device for a phased array antenna, comprising: a laser light source () arranged to provide an optical spectrum comprising a plurality of spaced wavelengths, and a distribution unit () configured to distribute one or more of the plurality of spaced wavelengths onto a plurality of optical paths (). A wavelength selection device () configured to receive the plurality of spaced wavelengths on each of the plurality of optical paths. One or more phase shift unit () connected to a said wavelength selection device, wherein the phase shift unit is configured to introduce a phase shift to a received wavelength. The wavelength selection device on each optical path is configured to selectively transmit a wavelength to the phase shift unit. The wavelength selection device is configured to receive the said phase shifted wavelength from the phase shift unit (). The beamforming device further comprising a heterodyning device () configured to generate a signal for transmission by an element of the phased array antenna, wherein the heterodyning device is configured to heterodyne a plurality of selected spectral components of the spaced wavelengths of the laser light source.