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1. (WO2005015753) IMPROVED RADIO FREQUENCY DIGITAL-TO-ANALOG CONVERTER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/015753 International Application No.: PCT/US2004/025324
Publication Date: 17.02.2005 International Filing Date: 04.08.2004
IPC:
H03M 1/00 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
M
CODING, DECODING OR CODE CONVERSION, IN GENERAL
1
Analogue/digital conversion; Digital/analogue conversion
Applicants: NORSWORTHY, Steven, R.[US/US]; US (UsOnly)
THAM, Andrew[US/US]; US (UsOnly)
REDGRAVE, Jason, Rupert[GB/GB]; US (UsOnly)
GREY, Aubrey, Arthur[US/US]; US (UsOnly)
STMICROELECTRONICS, INC.[US/US]; 1310 Electronics Drive MS 2345 Carrollton, TX 75006, US (AllExceptUS)
Inventors: NORSWORTHY, Steven, R.; US
THAM, Andrew; US
REDGRAVE, Jason, Rupert; US
GREY, Aubrey, Arthur; US
Agent: GAZDZINSKI, Robert, F.; c/o STMicroelectronics, INC. 1310 Electronics Drive MS 2346 Carrollton, TX 75006, US
Priority Data:
10/910,91703.08.2004US
60/493,05205.08.2003US
Title (EN) IMPROVED RADIO FREQUENCY DIGITAL-TO-ANALOG CONVERTER
(FR) CONVERTISSEUR NUMERIQUE-ANALOGIQUE DE RADIOFREQUENCE AMELIORE
Abstract:
(EN) A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.
(FR) L'invention concerne un convertisseur numérique-analogique de radiofréquence à sortie de courant programmable. L'invention concerne, selon des aspects, un appareil et des procédés améliorés permettant d'obtenir : (i) une adaptation de miroir de courant ; (ii) une performance de front montant d'impulsion de courant améliorée ; (iii) une excursion de tension de base réduite ; et (iv) une excursion de tension élevée compensée. L'appareil et les procédés de l'invention peuvent être utilisés pour toute application de signal RF (sans fil ou autre) notamment, par exemple, les combinés cellulaires sans fil.
front page image
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, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, 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)