公开(公告)号：US20230246564A1

公开(公告)日：2023-08-03

申请号：US17649215

申请日：2022-01-28

Applicant: NXP B.V.

Inventor： Daniel Lopez-Diaz ,  Peter Thüringer ,  Pierluigi Cavallini ,  Hubert Watzinger

IPC: H02M7/219 ,  H02M1/08 ,  H02M1/12 ,  H02M1/44 ,  G01R29/08

CPC classification number: H02M7/219 ,  H02M1/08 ,  H02M1/12 ,  H02M1/44 ,  G01R29/08

Abstract: An electronic circuit is provided. The electronic circuit includes a full-bridge rectifier, a spurious tone detection circuit, and a controller. The rectifier circuit has a plurality of switching elements and first and second radio frequency (RF) terminals. The spurious tone detection circuit has a non-linear circuit element and is coupled between the first RF terminal and a first reference terminal. The spurious tone detection circuit provides a non-zero direct current (DC) voltage in response to detecting harmonic tones at the first RF terminal of the full-bridge rectifier circuit. The controller is coupled to the plurality of switching elements. The controller is for controlling the operation of the plurality of switching elements based at least in part on detecting the harmonic tones. In one embodiment, the electronic circuit may be a wireless charging receiver. In another embodiment, a method for detecting harmonic tones in the electronic device is provided.

公开(公告)号：US20240154458A1

公开(公告)日：2024-05-09

申请号：US18503226

申请日：2023-11-07

Applicant: NXP B.V.

Inventor： Peter Thuringer ,  Ulrich Andreas Muehlmann ,  Daniel Lopez-Diaz ,  Franz Amtmann ,  Yoganathan Sivakumar

IPC: H02J50/00 ,  H02J50/20 ,  H02J50/40

CPC classification number: H02J50/001 ,  H02J50/20 ,  H02J50/402

Abstract: An energy harvesting unit includes a plurality of antennas configured to receive one or more signals and a plurality of first charge pumps, in which each of the first charge pumps is operatively coupled to one of the antennas, thereby forming pairs of antennas and first charge pumps. The energy harvesting unit also includes a selection unit configured to measure and compare output voltages of the first charge pumps and to select, from the antennas, a specific antenna. The specific antenna is coupled to the first charge pump that produces the highest output voltage. The energy harvesting unit also includes a multiplexer configured to couple the specific antenna selected by the selection unit to a second charge pump.

公开(公告)号：US11784578B2

公开(公告)日：2023-10-10

申请号：US17649215

申请日：2022-01-28

Applicant: NXP B.V.

Inventor： Daniel Lopez-Diaz ,  Peter Thüringer ,  Pierluigi Cavallini ,  Hubert Watzinger

IPC: H02M1/08 ,  H02M7/219 ,  G01R29/08 ,  H02M1/44 ,  H02M1/02

CPC classification number: H02M7/219 ,  G01R29/08 ,  H02M1/02 ,  H02M1/08 ,  H02M1/44

Abstract: An electronic circuit is provided. The electronic circuit includes a full-bridge rectifier, a spurious tone detection circuit, and a controller. The rectifier circuit has a plurality of switching elements and first and second radio frequency (RF) terminals. The spurious tone detection circuit has a non-linear circuit element and is coupled between the first RF terminal and a first reference terminal. The spurious tone detection circuit provides a non-zero direct current (DC) voltage in response to detecting harmonic tones at the first RF terminal of the full-bridge rectifier circuit. The controller is coupled to the plurality of switching elements. The controller is for controlling the operation of the plurality of switching elements based at least in part on detecting the harmonic tones. In one embodiment, the electronic circuit may be a wireless charging receiver. In another embodiment, a method for detecting harmonic tones in the electronic device is provided.