EP 3794737 A4 20220302 - LOW-POWER HIGH-ACCURACY CLOCK HARVESTING IN INDUCTIVE COUPLING SYSTEMS
Title (en)
LOW-POWER HIGH-ACCURACY CLOCK HARVESTING IN INDUCTIVE COUPLING SYSTEMS
Title (de)
HOCHGENAUE TAKTGEWINNUNG MIT NIEDRIGER LEISTUNGSAUFNAHME IN INDUKTIVEN KOPPLUNGSSYSTEMEN
Title (fr)
COLLECTE D'HORLOGE DE HAUTE PRÉCISION À FAIBLE PUISSANCE DANS DES SYSTÈMES DE COUPLAGE INDUCTIF
Publication
Application
Priority
- US 201815981914 A 20180517
- IB 2019052940 W 20190410
Abstract (en)
[origin: WO2019220232A1] An apparatus (20) includes a front-end circuit (30) and a digital processing circuit (28). The front-end circuit includes an antenna (32) and a modulation switch (40). The digital processing circuit is configured to transmit data to a remote unit (50) using inductive coupling of an Alternating Current (AC) magnetic field generated by the remote unit, by modulating a load impedance of the antenna using the modulation switch. The front-end circuit is configured to supply to the digital processing circuit a voltage signal, which has a frequency of the AC magnetic field and which has a non-zero envelope both during intervals in which the modulation switch is closed and during intervals in which the modulation switch is open, and wherein the digital processing circuit is configured to derive a clock signal from the voltage signal.
IPC 8 full level
H04B 5/00 (2006.01); A61B 5/00 (2006.01); H02J 50/80 (2016.01)
CPC (source: EP)
A61B 5/0031 (2013.01); A61B 5/0215 (2013.01); A61B 5/686 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02); H04B 5/26 (2024.01); H04B 5/72 (2024.01); H04B 5/79 (2024.01); A61B 2560/0214 (2013.01); H02J 2310/23 (2020.01)
Citation (search report)
See references of WO 2019220232A1
Designated contracting state (EPC)
AL 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 RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2019220232 A1 20191121; EP 3794737 A1 20210324; EP 3794737 A4 20220302
DOCDB simple family (application)
IB 2019052940 W 20190410; EP 19803392 A 20190410