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1. (WO2018162918) RADIO FREQUENCY CIRCUITS AND METHODS OF PROCESSING RADIO FREQUENCY SIGNALS
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Pub. No.: WO/2018/162918 International Application No.: PCT/GB2018/050600
Publication Date: 13.09.2018 International Filing Date: 09.03.2018
IPC:
H03B 1/04 (2006.01) ,H04B 1/04 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
B
GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
1
Details
04
Reducing undesired oscillations, e.g. harmonics
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details 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
02
Transmitters
04
Circuits
Applicants:
BAE SYSTEMS PLC [GB/GB]; 6 Carlton Gardens London SW1Y 5AD, GB
Inventors:
BENNETT, Mark Arwyn; GB
PRING, Philip,Charles, Jarrett; GB
GILBERT, Roger,Timothy, Gaunt; GB
Agent:
BAE SYSTEMS PLC, GROUP IP DEPT; Farnborough Aerospace Centre Farnborough Hampshire GU14 6YU, GB
Priority Data:
1703754.009.03.2017GB
17275035.809.03.2017EP
Title (EN) RADIO FREQUENCY CIRCUITS AND METHODS OF PROCESSING RADIO FREQUENCY SIGNALS
(FR) CIRCUITS RADIOFRÉQUENCE ET PROCÉDÉS DE TRAITEMENT DE SIGNAUX RADIOFRÉQUENCE
Abstract:
(EN) A radio frequency circuit for processing a radio frequency signal. The circuit comprises a variable frequency oscillator system and a radio frequency signal processing circuit arranged to process a radio frequency signal using the output of the variable frequency oscillator system. A digitiser is arranged to receive the output of the radio frequency signal processing circuit and generate a digitised signal. A phase noise capture circuit is arranged to capture the phase noise in the output of the variable frequency oscillator system. The radio frequency circuit is arranged to compensate for the effect of the phase noise in the output of the variable frequency oscillator system on the output of the radio frequency signal processing circuit, by digitally processing the digitised signal generated by the digitiser using the output of the phase noise capture circuit.
(FR) L'invention concerne un circuit radiofréquence permettant de traiter un signal radiofréquence. Le circuit comprend un système oscillateur à fréquence variable et un circuit de traitement de signal radiofréquence configuré de façon à traiter un signal radiofréquence à l'aide de la sortie du système oscillateur à fréquence variable. Un numériseur est destiné à recevoir la sortie du circuit de traitement de signal radiofréquence et à générer un signal numérisé. Un circuit de capture de bruit de phase est destiné à capturer le bruit de phase dans la sortie du système oscillateur à fréquence variable. Le circuit radiofréquence est configuré de façon à compenser l'effet du bruit de phase dans la sortie du système oscillateur à fréquence variable sur la sortie du circuit de traitement de signal radiofréquence, par traitement numérique du signal numérisé généré par le numériseur à l'aide de la sortie du circuit de capture de bruit de phase.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)