公开(公告)号：US20170179729A1

公开(公告)日：2017-06-22

申请号：US14974887

申请日：2015-12-18

Applicant: Intel IP Corporation

Inventor： Shahar Porat ,  Niv Amsalem

IPC: H02J5/00 ,  H02J7/02

CPC classification number: H02J50/80 ,  H02J7/025 ,  H02J50/12

Abstract: A load modulation circuit includes a resonator circuit configured to resonate based on a received charging power and produce a resonance output signal based thereon, and a rectifier circuit configured to receive the resonance output signal and convert the resonance output signal to a rectified voltage signal. The load modulation circuit further includes a sensor circuit configured to sense the rectified voltage signal and generate a control signal based on the rectified voltage signal and a target power range associated with a change in conducting power of the load modulation circuit during a load modulation. Lastly, the load modulation circuit includes a controllable current source circuit configured to generate a controlled current based on the control signal, wherein the controlled current modulates a load of the load modulation circuit while concurrently maintaining a change in total conducting power at an output of the rectified circuit within the target power range.

公开(公告)号：US10103585B2

公开(公告)日：2018-10-16

申请号：US14974887

申请日：2015-12-18

Applicant: Intel IP Corporation

Inventor： Shahar Porat ,  Niv Amsalem

IPC: H02J7/02 ,  H02J50/80 ,  H02J50/12

Abstract: A load modulation circuit includes a resonator circuit configured to resonate based on a received charging power and produce a resonance output signal based thereon, and a rectifier circuit configured to receive the resonance output signal and convert the resonance output signal to a rectified voltage signal. The load modulation circuit further includes a sensor circuit configured to sense the rectified voltage signal and generate a control signal based on the rectified voltage signal and a target power range associated with a change in conducting power of the load modulation circuit during a load modulation. Lastly, the load modulation circuit includes a controllable current source circuit configured to generate a controlled current based on the control signal, wherein the controlled current modulates a load of the load modulation circuit while concurrently maintaining a change in total conducting power at an output of the rectified circuit within the target power range.