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Japan: The Radio Act Enforcement Regulations was amended

AUGUST 2021 - ELECTRICAL AND ELECTRONICS

In force (since Aug 31, 2021)

On 31 August 2021, the Japanese Ministry of Internal Affairs and Communications published an amendment to the Radio Act Enforcement Regulations, Radio Equipment Regulations and Technical Standards Conformity Certification of Specified Radio Equipment. The purpose of the amendment is to expand the frequency band for outdoor use of UWB wireless systems and to specify technical requirements accordingly. The extended frequency band is 7.25-9 GHz. Below are the technical conditions of applicable equipment under that band.

The extended frequency band is 7.25-9 GHz. Below are the technical conditions of applicable equipment under that band.

  • antenna power: average power of -41.3 dBm/MHz or less, and a peak power of 0dBm/50MHz or less;
  • tolerance of occupied frequency bandwidth: 1.75 GHz;
  • frequency bandwidth for radiant power 10 dB lower than maximum radiant power: 450 MHz or higher;
  • housing requirements: must not be easily opened, etc.

Additionally, the amendment also includes the technical requirements of millimetre-wave radar/sensor systems used in 60 GHz band. The applicable technical conditions are:  

  • frequency allocation: 57GHz ~ 64GHz;
  • antenna power: 12dBm or less;
  • equivalent isotropic radiated power: 17dBm or less;
  • modulation type: pulse amplitude modulation, etc.

The Ordinance became effective from 31 August 2021.

 

[1] https://public-comment.e-gov.go.jp/servlet/PcmFileDownload?seqNo=0000223983 .

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