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1. (WO2017095492) POLAR MODULATION USING PRODUCT MODE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/095492 International Application No.: PCT/US2016/050645
Publication Date: 08.06.2017 International Filing Date: 08.09.2016
IPC:
H03F 1/02 (2006.01) ,H03F 1/32 (2006.01) ,H03F 3/24 (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
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
Applicants:
ERIDAN COMMUNICATIONS, INC. [US/US]; 750 Battery Street Suite 700 San Francisco, California 94111, US
Inventors:
KIRKPATRICK, Douglas A.; US
MCCUNE, JR., Earl W.; US
Agent:
WINTERS, William E.; US
Priority Data:
14/958,41803.12.2015US
Title (EN) POLAR MODULATION USING PRODUCT MODE
(FR) MODULATION POLAIRE UTILISANT UN MODE DE PRODUIT
Abstract:
(EN) Radio frequency (RF) transmitters and methods of their operation are disclosed. An exemplary RF transmitter includes an RF power amplifier (RFPA), a dynamic power supply (DPS), and a baseband processing unit. The baseband processing unit generates an amplitude modulation (AM) signal that the DPS follows to generate a DPS voltage VDD(t). The DPS voltage VDD(t) serves as a power supply for an output stage of the RFPA. Under most operating conditions the output stage is configured to operate in a compressed mode (C-mode), but is reconfigured to operate in a product mode (or "P-mode) during times low-magnitude events in the AM signal are conveyed to the DPS and become present in the DPS voltage VDD(t) produced by the DPS. Operating the output stage in P-mode overcomes the inability of C-mode operation to reproduce low-magnitude events contained in the AM signal at the RF output of the RFPA.
(FR) La présente invention porte sur des émetteurs radiofréquence (RF) et des procédés de leur fonctionnement. Un émetteur RF donné à titre d'exemple comprend un amplificateur de puissance RF (RFPA), une alimentation électrique dynamique (DPS), et une unité de traitement de bande de base. L'unité de traitement de bande de base génère un signal de modulation d'amplitude (AM) que suit le DPS pour générer une tension VDD(t) DPS. La tension DPS VDD(t) sert d'alimentation pour un étage de sortie du RFPA. Dans la plupart des conditions de fonctionnement, l'étage de sortie est configuré pour fonctionner en mode compressé (mode C), mais est reconfiguré pour fonctionner en mode de produit (ou mode P) pendant des instants où des évènements de faible amplitude dans le signal AM sont transportés vers le DPS et deviennent présents dans la tension VDD(t) DPS produite par le DPS. Le fonctionnement de l'étage de sortie en mode P surmonte l'incapacité de fonctionnement en mode C pour reproduire les événements de faible amplitude contenus dans le signal AM à la sortie HF du RFPA.
front page image
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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 Organization (AM, AZ, BY, KG, KZ, 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, 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)
Also published as:
CA3045763AU2016361957