Patents by Inventor Filippo Scotti
Filippo Scotti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11038268Abstract: A signal generator for a phased array antenna comprises a laser light source arranged to provide an optical spectrum comprising a plurality of spaced wavelengths. The signal generator further comprises a dispersion unit arranged to introduce a delay to a plurality of spectral components of the optical spectrum associated with the spaced wavelengths. The delay is dependent on the wavelength of the spectral components of the optical spectrum. The signal generator further comprises a heterodyning device configured to generate a signal for the phased array antenna by heterodyning the spectral components associated with different ones of the spaced wavelengths of the laser light source.Type: GrantFiled: August 30, 2013Date of Patent: June 15, 2021Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)Inventors: Paolo Ghelfi, Antonella Bogoni, Francesco Laghezza, Sergio Pinna, Filippo Scotti, Giovanni Serafino
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Patent number: 11025474Abstract: A periodic phase modulation, having a period shorter than a symbol period, is applied as a source modulation, in addition to a symbol modulation, to signals transmitted between a transmitter and a receiver in a communication network. Symbol value elements can be sent from multiple transmitters (203, 303, 603, 703) to a receiver (607, 207) in the same symbol period can be processed on the basis of the source modulation without destructive interference. In some embodiments, the symbol value elements sent by different transmitters can be combined in the receiver. In some embodiments, symbol value elements sent by different transmitters can be distinguished in the receiver.Type: GrantFiled: March 12, 2015Date of Patent: June 1, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
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Patent number: 10212611Abstract: A plurality of sub-cells are defined within a cell area of a radio communication network by the intersection of a radio paths of a plurality of directional radio antennas. The plurality of directional radio antennas are arranged to broadcast radio signals simultaneously, and to receive radio signals simultaneously. This disclosure relates to determining of signal values transmitted by or received from the plurality of directional radio antennas in a radio communication network.Type: GrantFiled: March 16, 2015Date of Patent: February 19, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
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Patent number: 10170832Abstract: A transceiver for a phased array antenna comprises a laser light source arranged to provide an optical spectrum comprising a plurality of spaced wavelengths. The transceiver further comprises a dispersion unit arranged to introduce a delay to a plurality of spectral components of the optical spectrum associated with the spaced wavelengths. The delay is dependent on the wavelength of the spectral components of the optical spectrum. The transceiver further comprises a first optical filter configured to select a plurality of spectral components received from the dispersion unit. The transceiver further comprises a first heterodyning device configured to generate a signal for transmission by the phased array antenna by heterodyning the selected spectral components associated with different ones of the spaced wavelengths of the laser light source. The transceiver is configured to receive signals from the phased array antenna.Type: GrantFiled: August 20, 2014Date of Patent: January 1, 2019Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Paolo Ghelfi, Antonella Bogoni, Francesco Laghezza, Daniel Onori, Filippo Scotti, Giovanni Serafino
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Publication number: 20180091353Abstract: A periodic phase modulation, having a period shorter than a symbol period, is applied as a source modulation, in addition to a symbol modulation, to signals transmitted between a transmitter and a receiver in a communication network. Symbol value elements can be sent from multiple transmitters (203, 303, 603, 703) to a receiver (607, 207) in the same symbol period can be processed on the basis of the source modulation without destructive interference. In some embodiments, the symbol value elements sent by different transmitters can be combined in the receiver. In some embodiments, symbol value elements sent by different transmitters can be distinguished in the receiver.Type: ApplicationFiled: March 12, 2015Publication date: March 29, 2018Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
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Publication number: 20180049041Abstract: A plurality of sub-cells are defined within a cell area of a radio communication network by the intersection of a radio paths of a plurality of directional radio antennas. The plurality of directional radio antennas are arranged to broadcast radio signals simultaneously, and to receive radio signals simultaneously. This disclosure relates to determining of signal values transmitted by or received from the plurality of directional radio antennas in a radio communication network.Type: ApplicationFiled: March 16, 2015Publication date: February 15, 2018Inventors: Marzio Puleri, Antonella Bogoni, Antonio D'Errico, Francesco Laghezza, Paolo Ghelfi, Teresa Pepe, Filippo Scotti
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Publication number: 20170244165Abstract: A transceiver for a phased array antenna comprises a laser light source arranged to provide an optical spectrum comprising a plurality of spaced wavelengths. The transceiver further comprises a dispersion unit arranged to introduce a delay to a plurality of spectral components of the optical spectrum associated with the spaced wavelengths. The delay is dependent on the wavelength of the spectral components of the optical spectrum. The transceiver further comprises a first optical filter configured to select a plurality of spectral components received from the dispersion unit. The transceiver further comprises a first heterodyning device configured to generate a signal for transmission by the phased array antenna by heterodyning the selected spectral components associated with different ones of the spaced wavelengths of the laser light source. The transceiver is configured to receive signals from the phased array antenna.Type: ApplicationFiled: August 20, 2014Publication date: August 24, 2017Inventors: Paolo GHELFI, Antonella BOGONI, Francesco LAGHEZZA, Daniel ONORI, Filippo SCOTTI, Giovanni SERAFINO
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Publication number: 20160211578Abstract: A signal generator for a phased array antenna comprises a laser light source arranged to provide an optical spectrum comprising a plurality of spaced wavelengths. The signal generator further comprises a dispersion unit arranged to introduce a delay to a plurality of spectral components of the optical spectrum associated with the spaced wavelengths. The delay is dependent on the wavelength of the spectral components of the optical spectrum. The signal generator further comprises a heterodyning device configured to generate a signal for the phased array antenna by heterodyning the spectral components associated with different ones of the spaced wavelengths of the laser light source.Type: ApplicationFiled: August 30, 2013Publication date: July 21, 2016Inventors: Paolo GHELFI, Antonella BOGONI, Francesco LAGHEZZA, Sergio PINNA, Filippo SCOTTI, Giovanni SERAFINO
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Publication number: 20150110494Abstract: An RF signal generator has an optical part for outputting optical carrier signals separated in optical frequency, and a modulator arranged to modulate the optical carrier signals with an intermediate frequency to generate sidebands. A phase modulation is applied to one or more of the sidebands or the optical carriers, without applying the phase modulation to others of the signals, and the modulator has integrated optical paths for both the phase modulated signals and for the others of the signals. A detector part carries out heterodyne detection to combine the phase modulated and other signals to output an RF signal having the phase modulation. By having integrated optical paths, the relative phase of these optical paths can be more stable than using a fiber sagnac interferometer and optical isolator thus enabling use in advanced radio communications.Type: ApplicationFiled: February 7, 2012Publication date: April 23, 2015Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Paolo Ghelfi, Filippo Scotti, Francesco Laghezza, Antonella Bogoni