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1. (WO2018160771) POWER AMPLIFIER SELF-HEATING COMPENSATION CIRCUIT
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Pub. No.: WO/2018/160771 International Application No.: PCT/US2018/020332
Publication Date: 07.09.2018 International Filing Date: 28.02.2018
Chapter 2 Demand Filed: 21.11.2018
IPC:
H03F 1/30 (2006.01) ,H03F 3/19 (2006.01) ,H03F 3/24 (2006.01) ,H03G 3/30 (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
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
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
G
CONTROL OF AMPLIFICATION
3
Gain control in amplifiers or frequency changers
20
Automatic control
30
in amplifiers having semiconductor devices
Applicants:
PSEMI CORPORATION [US/US]; 9380 Carroll Park Drive San Diego, California 92121, US
Inventors:
RANTA, Tero Tapio; US
BARGROFF, Keith; US
MURPHY, Christopher; US
ENGLEKIRK, Robert Mark; US
Agent:
CASH, Brian J.; US
STEINFL, Alessandro; US
BRUNO, Enrica; US
PEREZ, Ronald E.; US
DONG, Lun-Cong; US
XU, Jiancong; US
PIZZOLI, Antonio; c/o Società Italiana Brevetti S.p.A. Via Carducci 8 20123 Milano, IT
Priority Data:
15/445,81128.02.2017US
Title (EN) POWER AMPLIFIER SELF-HEATING COMPENSATION CIRCUIT
(FR) CIRCUIT DE COMPENSATION D'AUTO-RÉCHAUFFEMENT D'AMPLIFICATEUR DE PUISSANCE
Abstract:
(EN) Temperature compensation circuits and methods for adjusting one or more circuit parameters of a power amplifier (PA) to maintain approximately constant Gain versus time during pulsed operation sufficient to substantially offset self-heating of the PA. Some embodiments compensate for PA Gain "droop" due to self-heating using a Sample and Hold (S&H) circuit. The S&H circuit samples and holds an initial temperature of the PA at commencement of a pulse. Thereafter, the S&H circuit generates a continuous measurement that corresponds to the temperature of the PA during the remainder of the pulse. A Gain Control signal is generated that is a function of the difference between the initial temperature and the operating temperature of the PA as the PA self-heats for the duration of the pulse. The Gain Control signal is applied to one or more adjustable or tunable circuits within a PA to offset the Gain droop of the PA.
(FR) L'invention concerne des circuits de compensation de température et des procédés pour régler un ou plusieurs paramètres de circuit d'un amplificateur de puissance (PA) pour maintenir un gain approximativement constant dans le temps pendant un fonctionnement impulsionnel suffisant pour compenser sensiblement l'auto-réchauffement du PA. Certains modes de réalisation compensent l'« abaissement » du gain du PA dû à l'auto-réchauffement à l'aide d'un circuit échantillonneur-bloqueur (S&H). Le circuit S&H échantillonne et maintient une température initiale du PA au début d'une impulsion. Par la suite, le circuit S&H génère une mesure continue qui correspond à la température du PA pendant le reste de l'impulsion. Un signal de commande de gain est généré, lequel est une fonction de la différence entre la température initiale et la température de fonctionnement du PA lorsque le PA s'auto-réchauffe pendant la durée de l'impulsion. Le signal de commande de gain est appliqué à un ou plusieurs circuits réglables ou accordables à l'intérieur d'un PA pour compenser l'abaissement du gain du PA.
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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)