Filters guarantee reduced noise specification for Wi-Fi applications

Murata has released the BLF03VK series of ultra-compact noise filters especially created for the 5GHz band, one of the frequency ranges employed in Wi-Fi (wireless LAN) communications. The filters are claimed to be the first in the world to have a specified, guaranteed impedance value at 5GHz.

The company’s new series of noise filters suppress noise in the 5GHz band that hinders Wi-Fi signals, thereby adding to improved data processing ability and faster data transmission.

Targeted at companies designing wireless communication equipment with a Wi-Fi function and those delivering 5G equipment such as base stations, Wi-Fi modules, smartphones, tablet PCs, etc., the lineup includes two models: the BLF03VK221SNG with a specified impedance of 220Ohms at 5GHz, 0.8A-rated current, and the BLV03VK600SNL specified as 60Ohms at 5GHz, 1.2A rated current. The parts’ impedance frequency characteristics are controlled to maximise noise suppression in the 5GHz band, emphasising a low DC resistance, and saving on space, with a compact size of 0.6mm x 0.3mm.

This series of noise filters supporting the 5GHz band also improve communication sensitivity in Wi-Fi environments for smartphones and other devices.