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1. (WO2019067084) RADIO FREQUENCY POWER AMPLIFIER
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Pub. No.: WO/2019/067084 International Application No.: PCT/US2018/044516
Publication Date: 04.04.2019 International Filing Date: 31.07.2018
IPC:
H03F 1/02 (2006.01) ,H03F 1/30 (2006.01) ,H03F 3/195 (2006.01) ,H03F 3/24 (2006.01) ,H03F 3/72 (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
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
30
Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189
High-frequency amplifiers, e.g. radio frequency amplifiers
19
with semiconductor devices only
195
in integrated circuits
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
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
Applicants:
RAYTHEON COMPANY [US/US]; 870 Winter Street Waltham, Massachusetts 02451-1449, US
Inventors:
LAIGHTON, Christopher, M.; US
BIELUNIS, Alan, J.; US
WATTERS, Edward, A.; US
Agent:
MOFFORD, Donald, F.; US
ROBINSON, Kermit; US
DURKEE, Paul, D.; US
MILMAN, Seth, A.; US
MOOSEY, Anthony, T.; US
DALY, Christopher, S.; US
CROWLEY, Judith, C.; US
DOWNING, Marianne, M.; US
FLINDERS, Matthew; US
BLAU, David, E.; US
SICARD, Keri, E.; US
DUBUC, Marisa, J.; US
LEE, Lewis, J.; US
DIMOV, Kiril, O.; US
Priority Data:
15/718,50428.09.2017US
Title (EN) RADIO FREQUENCY POWER AMPLIFIER
(FR) AMPLIFICATEUR DE PUISSANCE RADIOFRÉQUENCE
Abstract:
(EN) An amplifier (10) having a Radio Frequency (RF) power level detector circuit (12) for producing a control signal in accordance with a power level of an RF input signal. The control signal indicates whether the power level of the input signal is within a predetermined range of power levels greater than zero. A bias circuit (16) is fed by the control signal, for producing a fixed bias voltage at a gate electrode of a field effect transistor (FET) to establish a predetermined quiescent current for the FET when the control signal indicates the power level of the RF input signal is within the predetermined range of power levels and to reduce the bias voltage to reduce the predetermined quiescent current when the control signal indicates the power level of the RF input signal is below the predetermined range of power levels.
(FR) La présente invention concerne un amplificateur (10) comprenant un circuit détecteur de niveau de puissance radiofréquence (RF) destiné à produire un signal de commande en fonction d'un niveau de puissance d'un signal d'entrée RF. Le signal de commande indique si le niveau de puissance du signal d'entrée se trouve dans une plage prédéterminée de niveaux de puissance supérieur à zéro. Un circuit de polarisation (16) est alimenté au moyen du signal de commande, de façon à produire une tension de polarisation fixe au niveau d'une électrode de grille d'un transistor à effet de champ (FET) afin d'établir un courant de repos prédéterminé destiné au FET lorsque le signal de commande indique que le niveau de puissance du signal d'entrée RF se trouve dans la plage prédéterminée de niveaux de puissance et de façon à réduire la tension de polarisation afin de réduire le courant de repos prédéterminé lorsque le signal de commande indique que le niveau de puissance du signal d'entrée RF est inférieur à la plage prédéterminée de niveaux de puissance.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)