Title:
INCOMING RADIO WAVE MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/243067
Kind Code:
A1
Abstract:
An incoming radio wave measurement device (1000) according to the present disclosure is characterized by being equipped with: a first signal source (7) for outputting a first clock signal; a second signal source (8) for outputting a second clock signal, the phase of which differs from and the frequency of which is the same as the first clock signal; a third signal source (7) for outputting a third clock signal; a first sample-hold circuit (S/H circuit 11) for under-sampling a first received signal by using the first clock signal; a second sample-hold circuit (S/H circuit 12) for under-sampling the first received signal by using the second clock signal; a frequency detection/phase calculation circuit (2) for calculating the frequency of the first received signal and the phase of the first received signal by using the phase difference between the output signal from the first sample-hold circuit and the output signal from the second sample-hold circuit; a third sample-hold circuit (S/H circuit 31) for under-sampling a second received signal by using the third clock signal; and a direction measurement circuit (10) for calculating the direction of arrival of the first received signal and the second received signal by using the phase of the output signal from the first sample-hold circuit and the output signal from the third sample-hold circuit.
Inventors:
WADA OSAMU (JP)
NAKAMIZO HIDEYUKI (JP)
NAKAMIZO HIDEYUKI (JP)
Application Number:
PCT/JP2022/024251
Publication Date:
December 21, 2023
Filing Date:
June 17, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S3/48
Foreign References:
| JP2010276531A | 2010-12-09 | |||
| JP2009300284A | 2009-12-24 | |||
| JP2016223779A | 2016-12-28 | |||
| US20190302218A1 | 2019-10-03 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
Download PDF: