Title:
FILTERING DEVICE AND FILTERING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/074598
Kind Code:
A1
Abstract:
The purpose of the present invention is to accurately realize demodulation in numerical phase detection. A sampling unit 1 samples an alternating current signal with a sampling period corresponding to each frequency to be extracted. Here, the sampling period is set such that one or half period of each frequency to be extracted is an integral multiple of the sampling period. A filtering unit 3 performs numerical phase detection on the sampled alternating current signal to filter the alternating current signal and thus acquire a frequency component to be extracted.
Inventors:
MITAMURA HIROYUKI (JP)
WATANUKI RYUTA (JP)
WATANUKI RYUTA (JP)
Application Number:
PCT/JP2022/039434
Publication Date:
May 04, 2023
Filing Date:
October 24, 2022
Export Citation:
Assignee:
MITAMURA HIROYUKI (JP)
International Classes:
H04L27/22
Domestic Patent References:
| WO2018163364A1 | 2018-09-13 | |||
| WO2019198739A1 | 2019-10-17 |
Other References:
MITAMURA HIROYUKI; WATANUKI RYUTA; KAMPERT ERIK; FöRSTER TOBIAS; MATSUO AKIRA; ONIMARU TAKAHIRO; ONOZAKI NORIMICHI; AMOU YUTA: "Improved accuracy in high-frequency AC transport measurements in pulsed high magnetic fields", REVIEW OF SCIENTIFIC INSTRUMENTS, vol. 91, no. 12, 11 December 2020 (2020-12-11), XP012252194, ISSN: 0034-6748, DOI: 10.1063/5.0014986
BIDET E., ET AL.: "FDF, A 512-TAP FIR USING A MIXED TEMPORAL-FREQUENTIAL APPROACH.", PROCEEDINGS OF THE CUSTOM INTEGRATED CIRCUITS CONFERENCE, vol. CONF. 17, 1 May 1995 (1995-05-01), US , pages 173 - 176., XP000536789, ISBN: 978-0-7803-2585-2, DOI: 10.1109/CICC.1995.518161
BIDET E., ET AL.: "FDF, A 512-TAP FIR USING A MIXED TEMPORAL-FREQUENTIAL APPROACH.", PROCEEDINGS OF THE CUSTOM INTEGRATED CIRCUITS CONFERENCE, vol. CONF. 17, 1 May 1995 (1995-05-01), US , pages 173 - 176., XP000536789, ISBN: 978-0-7803-2585-2, DOI: 10.1109/CICC.1995.518161
Attorney, Agent or Firm:
NARUSE Shigeo (JP)
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