公开(公告)号：US11621734B2

公开(公告)日：2023-04-04

申请号：US17321757

申请日：2021-05-17

Applicant: STMicroelectronics (Tours) SAS

Inventor： Jean Pierre Proot ,  Pascal Paillet ,  Francois Dupont

IPC: H04B1/04 ,  H03H7/38 ,  H04B1/18

Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.

公开(公告)号：US20180331577A1

公开(公告)日：2018-11-15

申请号：US15925356

申请日：2018-03-19

Applicant: STMICROELECTRONICS (TOURS) SAS

Inventor： Jean Pierre Proot ,  Pascal Paillet

IPC: H02J50/12 ,  H04B5/00 ,  H02J50/80

Abstract: A resonant circuit can be used in recharging a battery. The resonant circuit includes an inductor, a first capacitor in series with the inductor, and a second capacitor in parallel with the inductor. Upon entering the field of a charging terminal a controller connected to the resonant circuit continually measures loss in the inductor and voltage on a terminal of the resonant circuit. If both are below respective predetermined thresholds, the controller decreases the capacitance of the first capacitor and increases the capacitance of the second capacitor, thereby increasing voltage from the resonant circuit to the battery.

公开(公告)号：US10811906B2

公开(公告)日：2020-10-20

申请号：US15925356

申请日：2018-03-19

Applicant: STMICROELECTRONICS (TOURS) SAS

Inventor： Jean Pierre Proot ,  Pascal Paillet

IPC: H02J50/12 ,  H02J50/80 ,  H04B5/00 ,  H02J50/70 ,  H02J7/02 ,  H02M7/48

Abstract: A resonant circuit can be used in recharging a battery. The resonant circuit includes an inductor, a first capacitor in series with the inductor, and a second capacitor in parallel with the inductor. Upon entering the field of a charging terminal a controller connected to the resonant circuit continually measures loss in the inductor and voltage on a terminal of the resonant circuit. If both are below respective predetermined thresholds, the controller decreases the capacitance of the first capacitor and increases the capacitance of the second capacitor, thereby increasing voltage from the resonant circuit to the battery.

公开(公告)号：US11909427B2

公开(公告)日：2024-02-20

申请号：US18113796

申请日：2023-02-24

Applicant: STMicroelectronics (Tours) SAS

Inventor： Jean Pierre Proot ,  Pascal Paillet ,  Francois Dupont

IPC: H04B1/04 ,  H03H7/38 ,  H04B1/18

CPC classification number: H04B1/0458 ,  H03H7/38 ,  H04B1/18

Abstract: A circuit device includes a directional coupler with a first port receiving a radiofrequency signal, a second port outputting a signal in response to signal received by the first port, and a third port outputting a signal in response to a reflection of the signal at the second port. An impedance matching network is connected between the second port and an antenna. The impedance matching network includes fixed inductive and capacitive components and a single variable inductive or capacitive component. A diode coupled to the third port of the coupler generates a voltage at a measurement terminal which is processed in order to select and set the inductance or capacitance value of the variable inductive or capacitive component.