Title:
PHASE DETECTOR
Document Type and Number:
WIPO Patent Application WO/2021/024359
Kind Code:
A1
Abstract:
This phase detector is configured to comprise: a phase shift circuit (2) that phase shifts each of a first in-phase signal included in a first differential signal and a first anti-phase signal included in the first differential signal, and phase shifts each of a second in-phase signal included in a second differential signal and a second anti-phase signal included in the second differential signal; a multiplication circuit (3) that, for all combinations of the first in-phase signal included in the first differential signal and the first anti-phase signal included in the first differential signal, and the second in-phase signal after phase shifting by the phase shift circuit (2) and the second anti-phase signal after phase shifting by the phase shift circuit (2), implements multiplication of two signals and outputs multiplication signals indicating the multiplication results, and that, for all combinations of the first in-phase signal after phase shifting by the phase shift circuit (2) and the first anti-phase signal after phase shifting by the phase shift circuit (2), and the second in-phase signal included in the second differential signal and the second anti-phase signal included in the second differential signal, implements multiplication of two signals and outputs multiplication signals indicating the multiplication results; and a phase difference calculation circuit (4) that uses all of the multiplication signals outputted from the multiplication circuit (3) to calculate the phase difference between the first differential signal and the second differential signal.
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Inventors:
HIRAI AKIHITO (JP)
TSURU MASAOMI (JP)
TSURU MASAOMI (JP)
Application Number:
PCT/JP2019/030757
Publication Date:
February 11, 2021
Filing Date:
August 05, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03D13/00
Foreign References:
| JP2013207737A | 2013-10-07 | |||
| JPH07226677A | 1995-08-22 |
Other References:
See also references of EP 3993259A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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