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1. WO2020072136 - PHOTONICS INTERFERENCE CANCELER

Publication Number WO/2020/072136
Publication Date 09.04.2020
International Application No. PCT/US2019/046991
International Filing Date 19.08.2019
IPC
H04B 1/525 2015.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
50using different frequencies for the two directions of communication
52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
525with means for reducing leakage of transmitter signal into the receiver
H04B 1/10 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
10Means associated with receiver for limiting or suppressing noise or interference
CPC
H04B 1/525
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40Circuits
50using different frequencies for the two directions of communication
52Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
525with means for reducing leakage of transmitter signal into the receiver
H04B 10/516
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
50Transmitters
516Details of coding or modulation
H04B 10/697
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
60Receivers
66Non-coherent receivers, e.g. using direct detection
69Electrical arrangements in the receiver
697Arrangements for reducing noise and distortion
H04B 10/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
70Photonic quantum communication
H04B 2210/006
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
2210Indexing scheme relating to optical transmission systems
006Devices for generating or processing an RF signal by optical means
Applicants
  • RAYTHEON COMPANY [US]/[US]
Inventors
  • GIANVITTORIO, John, P.
  • MARTIN, Larry, C.
Agents
  • DIMOV, Kiril, O.
  • DURKEE, Paul, D.
  • MOFFORD, Donald, F.
  • ROBINSON, Kermit
  • MOOSEY, Anthony, T.
  • DALY, Christopher, S.
  • CROWLEY, Judith, C.
  • DOWNING, Marianne, M.
  • BLAU, David, E.
  • SICARD, Keri, E.
  • DUBUC, Marisa, J.
  • LANGE, Kristoffer, W.
Priority Data
16/151,70504.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PHOTONICS INTERFERENCE CANCELER
(FR) APPAREIL D’ANNULATION D’INTERFÉRENCES PHOTONIQUES
Abstract
(EN)
An apparatus for performing interference cancellation is disclosed, comprising: a first electro-optic (EO) modulator configured to modulate a received RF signal onto a first optical carrier signal to generate a first modulated signal; a plurality of base signal sources configured to generate a plurality of base signals; an optical combiner coupled to the plurality of base signal sources, the optical combiner being configured to combine the base signals into a second optical carrier signal; a second EO modulator configured to modulate a reference signal onto the second optical carrier signal to generate a second modulated signal; a dispersive element coupled to the second EO modulator and configured to generate a tapped delay line signal; and a subtraction element that is coupled to the first EO modulator and the dispersive element, the subtraction element being configured to subtract the tapped delay line signal from the first modulated signal to generate an output signal.
(FR)
La présente invention concerne un appareil pour réaliser une annulation d’interférences. L’appareil comprend : un premier modulateur électro-optique (EO) configuré pour moduler un signal RF reçu en un premier signal de porteuse optique pour générer un premier signal modulé ; une pluralité de sources de signaux de base configurée pour générer une pluralité de signaux de base ; un combinateur optique couplé à la pluralité de sources de signaux de base, le combinateur optique étant configuré pour combiner les signaux de base en un second signal de porteuse optique ; un second modulateur EO configuré pour moduler un signal de référence sur le second signal de porteuse optique pour générer un second signal modulé ; un élément dispersif couplé au second modulateur EO et configuré pour générer un signal de ligne de retard prélevé ; et un élément de soustraction qui est couplé au premier modulateur EO et à l’élément dispersif, l’élément de soustraction étant configuré pour soustraire le signal de ligne de retard prélevé du premier signal modulé pour générer un signal de sortie.
Also published as
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