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Currently, the next generation (5G) mobile communication system has been actively investigated all over the world, in order to satisfy the future expected requirements, such as super high bit rate. Here, one of the approaches is to utilize the high-SHF (over 6 GHz) and EHF (mainly 30 – 100 GHz) bands. Here, in order to determine the carrier frequency bands for 5G, frequency dependency of path loss...
Currently, the next generation (5G) mobile communication system has been actively investigated all over the world, in order to satisfy the future expected requirements, such as super high bit rate. Here, one of the approaches is to utilize the high-SHF (above 6 GHz) and EHF (mainly 30 – 60 GHz) bands. These bands are very attractive because wider frequency bandwidth is relatively easily obtained....
This paper presents our recent progress for the development of low-AC loss Bi2223 tapes with interfilamentary oxide barriers. For the compatibility with Bi2223 phase formation during sintering, SrZrO3 was selected as barrier materials. Moreover, small amount of Bi2212 was mixed with SrZrO3 to improve its ductility for cold working. Although some breakages of barrier layers still existed, the effective...
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