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Pub. No.:    WO/2006/127115    International Application No.:    PCT/US2006/011141
Publication Date: 30.11.2006 International Filing Date: 27.03.2006
H01Q 11/12 (2006.01)
Applicants: MOTOROLA, INC. [US/US]; 1303 East Algonquin Road, Schaumburg, Illinois 60196 (US) (For All Designated States Except US).
HANNA, Wisam A., [GB/GB]; (GB) (For US Only)
Inventors: HANNA, Wisam A.,; (GB)
Agent: MANCINI, Brian M.,; 1303 East Algonquin Road, Schaumburg, Illinois 60196 (US)
Priority Data:
0510681.0 26.05.2005 GB
Abstract: front page image
(EN)A radio transmitter arrangement (100), e.g. for a base station of a cellular communication system, comprises a power amplifier (103) for generating a radio frequency signal to be radiated from an antenna (105). A power supply means (107, 109) supplies a supply power to the power amplifier (103). The arrangement (100) further comprises a sensor element (111) which generates a radiated power indication by sensing a radiated signal strength of the radio frequency signal. A feedback controller (113) controls the supply power to the power amplifier (103) in response to the radiated power indication. Specifically, the feedback controller (113) may switch off the power supplied to the power amplifier (103) if the sensed signal level increases above a given threshold value. The invention may provide an external circuit for a power amplifier (103) ensuring increased reliability and protection against excessive interference.
(FR)L'invention porte sur un arrangement d'émetteur radio (100), par exemple de station de base de système de communication cellulaire comportant: un amplificateur de puissance (103) fournissant le signal RF rayonné par une antenne (105); une alimentation (107, 109) de l'amplificateur (103); un détecteur (111) de la puissance du signal RF rayonnée; et un contrôleur à réaction (113) réglant l'alimentation de l'amplificateur (103) en fonction de la puissance du signal RF rayonnée, et pouvant la couper si elle dépasse un seuil donné. Ladite invention peut servir de circuit extérieur d'amplificateur de puissance (103), en assurant la fiabilité et la protection contre les interférences excessives.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)