Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2010076721) POWER AMPLIFIER PROTECTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/076721 International Application No.: PCT/IB2009/055687
Publication Date: 08.07.2010 International Filing Date: 11.12.2009
IPC:
H03F 1/52 (2006.01) ,H03F 1/02 (2006.01) ,H03F 3/21 (2006.01) ,H03F 3/217 (2006.01) ,H03F 3/24 (2006.01) ,H04B 1/04 (2006.01) ,H03F 3/72 (2006.01) ,H04L 27/36 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
52
Circuit arrangements for protecting such amplifiers
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
02
Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20
Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
21
with semiconductor devices only
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20
Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
21
with semiconductor devices only
217
Class D power amplifiers; Switching amplifiers
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
20
Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
24
of transmitter output stages
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
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
72
Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
32
Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34
Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
36
Modulator circuits; Transmitter circuits
Applicants:
NXP B.V. [NL/NL]; High Tech Campus 60 NL-5656 AG Eindhoven, NL (AllExceptUS)
ACAR, Mustafa [TR/NL]; NL (UsOnly)
VAN DER HEIJDEN, Mark Pieter [NL/NL]; NL (UsOnly)
APOSTOLIDOU, Melina [GR/NL]; NL (UsOnly)
Inventors:
ACAR, Mustafa; NL
VAN DER HEIJDEN, Mark Pieter; NL
APOSTOLIDOU, Melina; NL
Agent:
KROTT, Michel Willy François Maria; c/o NXP B.V Intellectual Property & Licensing Department High Tech Campus 32 NL-5656 AE Eindhoven, NL
Priority Data:
08106041.031.12.2008EP
Title (EN) POWER AMPLIFIER PROTECTION
(FR) PROTECTION D'AMPLIFICATEUR DE PUISSANCE
Abstract:
(EN) A power amplifier, for example a class-E switching power amplifier, and corresponding method, comprising: a plurality of power transistors (16), for example twelve power transistors, providing a partitioned power transistor; and a voltage sensing module (22), comprising for example voltage dividers and inverters, digitally sensing the drain voltage (2) of the partitioned power transistor to control the number of power transistors of the plurality of power transistors (16) that are switched on or off thereby controlling the drain voltage (2) which is varying for example due to antenna mismatch. The power amplifier may further comprise a memory (24) coupled to the voltage sensing module (22) for storing a history of the drain voltage (2), e.g. a history of antenna mismatch.
(FR) L'invention concerne un amplificateur de puissance, par exemple un amplificateur de puissance de commutation de classe E, et le procédé correspondant, qui comprend: plusieurs transistors de puissance (16), par exemple douze transistors de puissance, qui fournissent un transistor de puissance fractionné; et un module de détection de tension (22), comprenant par exemple des diviseurs et des inverseurs de tension, détectant de manière numérique la tension de drain (2) du transistor de puissance fractionné pour réguler le nombre de transistors de puissance de la pluralité de transistors de puissance (16) qui sont enclenchés ou débranchés, régulant ainsi la tension de drain (2) qui varie par exemple en raison d'une asymétrie d'antenne. L'amplificateur de puissance peut en outre comprendre une mémoire (24) couplée au module de détection de tension (22) pour stocker un historique de la tension de drain (2), par exemple un historique d'asymétrie d'antenne.
front page image
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, 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, 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, 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)
Also published as:
EP2384543US20110254630CN102265509