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Pub. No.:    WO/2012/044147    International Application No.:    PCT/MY2010/000195
Publication Date: 05.04.2012 International Filing Date: 30.09.2010
H03D 7/14 (2006.01)
Applicants: TELEKOM MALAYSIA BERHAD [MY/MY]; Level 51 , North Wing, Menara TM Jalan Pantai Baharu 50672 Kuala Lumpur (MY) (For All Designated States Except US).
SALLEH, Syahrizal [MY/MY]; (MY) (For US Only).
MOHD YUSOF, Zulkalnain [MY/MY]; (MY) (For US Only).
HASHIM, Mohamad Faizal [MY/MY]; (MY) (For US Only)
Inventors: SALLEH, Syahrizal; (MY).
MOHD YUSOF, Zulkalnain; (MY).
HASHIM, Mohamad Faizal; (MY)
Agent: ONG, Charmayne Poh Yin; c/o Skrine, Unit no. 50-8-1 , 8th Floor Wisma UOA Damansara 50, Jalan Dungun, Damansara Heights 50490 Kuala Lumpur (MY)
Priority Data:
Abstract: front page image
(EN)A quadrature mixer circuit with double balanced mixers. The quadrature mixer includes a first (130) and a second (140) double balanced mixer. The in-phase 1 branch (110) mixes 1, 1b components with the first complementary local oscillator signals (150). The quadrature Q branch (120) mixes Q, Qb components with a second local oscillator signal (160) that is phase shifted 90 degrees from the first local oscillator. The output of the two branches is two sets of mixed signals each set including a mixed signal and its complement. The first set of mixed signals is fed to an amplifier stage (170) from the first double balanced mixer, and the second set of mixed signals is fed to an amplifier stage (180) from the second double balanced mixer. These amplified signals are summed together in adder (190).
(FR)L'invention porte sur un circuit mélangeur en quadrature comprenant des mélangeurs symétriques doubles. Le mélangeur en quadrature comprend un premier (130) et un second (140) mélangeur symétrique double. La branche en phase I (110) mélange des composantes I, Ib avec les premiers signaux d'oscillateur local complémentaires (150). La branche en quadrature Q (120) mélange des composantes Q, Qb avec un second signal d'oscillateur local (160) qui est déphasé de 90 degrés par rapport au premier signal d'oscillateur local. La sortie des deux branches est composée de deux ensembles de signaux mélangés, chaque ensemble comprenant un signal mélangé et son complément. Le premier ensemble de signaux mélangés est appliqué à un étage amplificateur (170) à partir du premier mélangeur symétrique double, et le second ensemble de signaux mélangés est appliqué à un étage amplificateur (180) à partir du second mélangeur symétrique double. Ces signaux amplifiés sont additionnés l'un à l'autre dans un additionneur (190).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, 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 (BW, GH, GM, KE, LR, 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 (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, SE, SI, SK, SM, 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)