PATENTSCOPE will be unavailable a few hours for maintenance reason on Tuesday 19.11.2019 at 4:00 PM CET
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. (EP2372904) POWER AMPLICATION DEVICE

Office : European Patent Office
Application Number: 09834744 Application Date: 16.12.2009
Publication Number: 2372904 Publication Date: 05.10.2011
Publication Kind : A4
Designated States: AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR
Prior PCT appl.: Application Number:JP2009070949 ; Publication Number: Click to see the data
IPC:
H03F 1/02
H03F 1/06
H03F 1/32
H03F 3/24
H04B 1/04
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
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
04
in discharge-tube amplifiers
06
to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
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
32
Modifications of amplifiers to reduce non-linear distortion
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
CPC:
H03F 1/0222
H03F 1/02
H03F 1/0244
H03F 3/24
H03F 2200/102
H03F 2200/511
H04B 2001/045
Applicants: NEC CORP
Inventors: KUNIHIRO KAZUAKI
YAMANOUCHI SHINGO
SHIIKUMA KAZUMI
Priority Data: 2008330709 25.12.2008 JP
2009070949 16.12.2009 JP
Title: (DE) LEISTUNGSVERSTÄRKUNGSGERÄT
(EN) POWER AMPLICATION DEVICE
(FR) DISPOSITIF D'AMPLIFICATION DE PUISSANCE
Abstract: front page image
(EN) A radio frequency amplifier amplifies a modulation signal or its phase modulation component and outputs the resultant signal. A linear amplifier adds an output voltage to a power supply voltage supplied to the radio frequency amplifier, amplifies a difference between the output voltage and the amplitude modulation component, and outputs the resultant difference. A control signal generation section detects a direction in which an output current of the linear amplifying section flows and generates a pulse modulation signal according to the direction of the current. A switching amplifying section controls connection and disconnection of a DC current based on the pulse modulation signal as a control signal so as to perform switching amplification for an output signal of the linear amplifying section, add the resultant signal to a predetermined DC voltage, and supply the resultant signal as the power supply voltage to the radio frequency amplifier. The DC current and the predetermined DC voltage are supplied to the switching amplifying section.
(FR) Un amplificateur haute-fréquence amplifie un signal de modulation ou une composante de modulation de phase du signal de modulation lors de la sortie du signal. Un amplificateur linéaire ajoute une tension de sortie à une tension d'alimentation fournie à l'amplificateur haute-fréquence et amplifie une différence entre la tension de sortie et la composante de modulation d'amplitude du signal de modulation pour sortie. Une unité de génération de signal de commande détecte la direction de circulation du courant de sortie dans l'unité d'amplification linéaire et génère un signal de modulation d'impulsion sur la base de la direction de circulation de courant. Une unité d'amplification de commutation utilise le signal de modulation d'impulsion comme signal de commande pour commander l'activation/désactivation du courant CC de manière à amplifier par amplification par commutation le signal de sortie de l'unité d'amplification linéaire et ajoute le signal à une tension CC prédéfinie à fournir comme tension d'alimentation à l'amplificateur haute-fréquence. Un courant CC et une tension CC prédéfinie sont envoyés à l'unité d'amplification de commutation.
Also published as:
JPWO2010073941US20110241775CN102265505WO/2010/073941