Title:
CALIBRATION DEVICE AND CALIBRATION METHOD OF ARRAY ANTENNA, ARRAY ANTENNA, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/021628
Kind Code:
A1
Abstract:
The present invention is provided with: a multi-carrier calibration signal generation means (50) which generates a plurality of calibration signals based on a plurality of sub-carriers, each of which is different in correspondence to each of a plurality of antenna elements (1-1 to 1-K) and includes a first frequency unit of a sub-carrier to which a sub-carrier symbol is allocated and a second frequency unit to which a sub-carrier symbol is not allocated, with respect to a transmission means (100) that includes the plurality of antenna elements (1-1 to 1-K) and transmission signal processing systems corresponding to the plurality of antenna elements (1-1 to 1-K), generates a plurality of transmission radio waves in which transmission signals of respective antenna elements (1-1 to 1-K) are corrected for amplitude phase differences and time differences on the basis of transmission signal calibration values and to which the corrected amplitude phase differences and the corrected time differences corresponding to the plurality of antenna elements (1-1 to 1-K) are applied, and irradiates respectively corresponding transmission radio waves from the plurality of antenna elements (1-1 to 1-K); injection means (6-1 to 6-K) which inject, to the transmission means (100), the plurality of calibration signals generated by the multi-carrier calibration signal generation means (50) in correspondence to the transmission signal processing systems of the plurality of antenna elements (1-1 to 1-K); extraction means (2-1 to 2-K) which extract the calibration signals processed by the transmission signal processing systems of the plurality of antenna elements (1-1 to 1-K); a wave dividing means which (70) divides, into a frequency unit of an allocated sub-carrier and a frequency unit that is not allocated as a sub-carrier, the calibration signal for each of the plurality of antenna elements (1-1 to 1-K), which is extracted by the extraction means (2-1 to 2-K); and a calibration processing means (60) which obtains calibration values for calibrating the amplitude phase differences and the time differences between the transmission signal processing systems of the plurality of antenna elements (1-1 to 1-K) by means of the wave-divided signals from the wave dividing means (70), and gives, to the transmission means (100), the transmission signal calibration values based on the obtained calibration values.
Inventors:
KIHIRA KAZUNARI (JP)
FUKASAWA TORU (JP)
FUKASAWA TORU (JP)
Application Number:
PCT/JP2018/027683
Publication Date:
January 30, 2020
Filing Date:
July 24, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B7/08; H04B7/06
Domestic Patent References:
| WO2017010519A1 | 2017-01-19 |
Foreign References:
| JP2011106858A | 2011-06-02 | |||
| JP2006166452A | 2006-06-22 | |||
| JP2008053803A | 2008-03-06 | |||
| JP2011106858A | 2011-06-02 |
Other References:
See also references of EP 3809605A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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