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Machine translation
1. (WO2002007401) PHASE MODULATOR USING A FREQUENCY SYNTHESIZER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/007401    International Application No.:    PCT/US2001/021565
Publication Date: 24.01.2002 International Filing Date: 09.07.2001
Chapter 2 Demand Filed:    01.02.2002    
IPC:
H04L 27/20 (2006.01), H04L 27/36 (2006.01)
Applicants: ERICSSON INC. [US/US]; 511 Davis Drive Research Triangle Park, NC 27709 (US) (For All Designated States Except US).
CAIRNS, Douglas, A. [US/US]; (US) (For US Only)
Inventors: CAIRNS, Douglas, A.; (US)
Agent: OWEN, John, R.; Coats & Bennett, PLLC P.O. Box 5 Raleigh, NC 27602 (US)
Priority Data:
09/616,252 14.07.2000 US
Title (EN) PHASE MODULATOR USING A FREQUENCY SYNTHESIZER
(FR) PREDISTORTION DE SIGNAL DE REFERENCE POUR EMETTEUR A SYNTHETISEUR DE FREQUENCE, SUR LA BASE DU CODAGE DE PHASE
Abstract: front page image
(EN)A variable frequency synthesizer is used during generation of a phase-encoded signal. The reference signal input to the frequency synthesizer is not held stable and constant, but is instead deliberately varied to control the output of the frequency synthesizer. This varying reference signal, referred to as the phase reference signal, is derived form traditional inphase and quadrature signals, as modified by a phase distorter. The phase distorter applies a pre-distortion to the inphase and quadrature signals so as to compensate for band limiting effects of the frequency synthesizer. The signal transmitted is then based on the phase-encoded signal.
(FR)L'invention concerne un synthétiseur de fréquence variable utilisé pendant la production d'un signal à codage de phase. L'entrée de signal de référence dans le synthétiseur n'est pas maintenue stable et constante, mais plutôt soumise à des variations délibérées visant à contrôler la sortie du synthétiseur. Le signal ainsi modifié, appelé signal de référence de phase, est dérivé de signaux classiques en phase et à quadrature de phase, tels que modifiés par un appareil de prédistorsion de phase, lequel applique une prédistorsion aux signaux en phase et à quadrature de phase pour compenser les effets limitateurs de bande induits par le synthétiseur. Ensuite, le signal transmis repose sur le signal à codage de phase.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)