The Japanese Ministry of Internal Affairs and Communications (MIC) issued Ordinance No. 87. According to the new update, the following documents have been partly revised: 

1. Radio Law Enforcement Regulations
2. Radio Equipment Regulations
3. Technical Regulations Conformity Certification of Specified Radio Equipment

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The revision was made with regard to UWB wireless systems for outdoor use and radar systems transmitting short- wavelength electromagnetic wave signals (mmWave radars).

Thus, MIC extends the use of UWB technologies on 7.25-9 GHz frequency bands. Additionally, MIC informs that UWB devices should have the following:

• average antenna power of -41.3 dBm/MHz or less
• peak antenna power of 0 dBm/50 MHz or less
• tolerance of occupied frequency bandwidth should be 1.75 GHz
• frequency bandwidth for radiant power 10 dB lower than maximum radiant power: 450 MHz or higher
• the design of housing should prevent easy opening 

The document revises technical conditions requirements to the mmWave radars operating on 60 GHz band. Among them are the following:  

• frequency allocation: 57 GHz ~ 64 GHz
• antenna power should be 12 dBm or less
• equivalent isotropic radiated power should be 17 dBm or less
• pulse amplitude modulation type

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The information has been prepared by the GMA Consult Group team.‍

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