The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Dec. 14, 2021
Hyundai Mobis Co., Ltd., Seoul, KR;
Jong Hyuk Park, Seoul, KR;
HYUNDAI MOBIS CO., LTD., Seoul, KR;
Abstract
The present invention relates to an apparatus and method capable of performing immediate impedance matching according to changes of a distance and positions between TX/RX coils. The present invention includes: an impedance adjustment unit including a voltage-controlled variable capacitance device; a power detector configured to detect a reflection signal which enters the transmitter or receiver when there is no impedance matching to measure a magnitude of the reflection signal and convert the reflection signal into a DC signal; a multiplier configured to multiply the DC signal with a periodic signal; an integrator configured to accumulate and add a signal in which the DC signal and the periodic signal are multiplied; and a voltage summer configured to sum a signal output from the integrator with a reference voltage to calculate a capacitance control voltage to be applied to the voltage-controlled variable capacitance device.