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:
Mar. 05, 2019
Filed:
Apr. 18, 2016
Instituto DE Telecomunicações, Lisbon, PT;
Miguel Vidal Drummond, Estarreja, PT;
Rogério Nunes Nogueira, Gafanha Da Boa-hora, PT;
Vanessa Cunha Duarte, Aveiro, PT;
INSTITUTO DE TELECOMMUNICAÇÕES, Lisbon, PT;
Abstract
It is an object of the present invention a photonic system to perform beamforming of a radio signal received by a phased array antenna with N antenna elements. It provides true-time delay beamforming enabled by tunable optical delay lines () with a periodic frequency response. The present invention provides four key advantages: photonic RF phase shifting; highly-sensitive coherent detection with intrinsic photonic frequency downconversion; phase noise cancellation, since a frequency-shifted optical local oscillator can be derived from a same laser source () used to feed electro-optic modulators (); and the possibility of only requiring a single delay line, shared amongst all tunable optical delay lines. Such set of advantages makes the proposed system extremely attractive for high-end wireless receivers, required for demanding applications such as satellite communication systems and broadband wireless signal transmission.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile