Title:
MEMS AMPLITUDE MODULATOR AND MEMS MAGNETIC FIELD SENSOR INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2015/026079
Kind Code:
A1
Abstract:
The present invention provides an amplitude modulator, which is disposed in an area through which a magnetic field flows so as to modulate amplitudes, comprising: a substrate; a first driving electrode which receives a first frequency signal and a second frequency signal supplied from the substrate and carries out resonant motion by the magnetic field; and a second driving electrode for receiving the second frequency signal and carries out resonant motion by the first driving electrode and the magnetic field, wherein a modulated signal is generated by modulating the amplitudes of the first and second frequency signals through the resonant motions of the first and second driving electrodes. Therefore, since the signal generated by modulating a carrier signal through mechanical resonance according to the magnetic field is outputted, amplitude modulation can be carried out without a complicated circuit configuration. In addition, since an MEMS device is a single structure that does not include an insulating layer, a single signal is applied to one structure, thereby simplifying driving, and all the driving electrodes of both ends thereof are driven so as to double a change in variable capacitance, thereby improving sensing ability.
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Inventors:
JI CHIL YOUNG (KR)
KO YONG JUN (KR)
KWON SEUNG HWA (KR)
SEO SANG WON (KR)
KIM CHUL (KR)
SEO JEONG GI (KR)
JUN DO HAN (KR)
CHOI WAN SEOP (KR)
KO YONG JUN (KR)
KWON SEUNG HWA (KR)
SEO SANG WON (KR)
KIM CHUL (KR)
SEO JEONG GI (KR)
JUN DO HAN (KR)
CHOI WAN SEOP (KR)
Application Number:
PCT/KR2014/007246
Publication Date:
February 26, 2015
Filing Date:
August 05, 2014
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G01R33/02; G01R33/00
Foreign References:
| KR20110113847A | 2011-10-19 | |||
| JPH08334379A | 1996-12-17 | |||
| KR101262606B1 | 2013-05-08 | |||
| KR20060094666A | 2006-08-30 | |||
| KR20070011670A | 2007-01-25 |
Attorney, Agent or Firm:
SEO, Kyo Jun (KR)
서교준 (KR)
서교준 (KR)
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