Johanson Technology, Inc has released its first family of 5G n257 and n261 band BPFs with two different iterations of the passband. The use case of these 28GHz 5G filters if short range cellular transmission with very high data rates as part of the 3rd Generation Partnership Project (3GPP) for indoor and outdoor access points. As worldwide geographical harmonization of the spectrum consolidates, we will release new passband frequencies.

Datasheets:
https://www.johansontechnology.com/index.php?option=com_products&id=28R0BP39A2000
https://www.johansontechnology.com/index.php?option=com_products&id=28R0BP39A3500

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Source: http://www.johansontechnology.com/