Since UHF-band has a higher frequency and shorter wavelength than HF band, it is said that it has the advantage for the miniaturization of antenna size in general.
Also, on radio wave system, the communication distance can be long in general although it depend on the antenna size.
IC chip of RF tag for UHF-band is generally smaller, and the memory capacity is smaller, too. Therefore, there is the many case that the cost is lower.
In case of using the high power reader writer, the application for the Wire Radio Act license to the local radio communication station but the specific low power type of devices ( with the license for the maximum power 250 mw) can be freely used by the user.
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