TDK Corporation has just announced a new EPCOS WLAN-Bluetooth filter that encompasses the coexistence of cellular, WLAN, Bluetooth and satellite navigation services all on the same antenna, say researchers.
The new EPCOS B8831 filter works due to its small dimensions of 1.1 mm x 0.9 mm x 0.4mm, less power expenditure, a better Q factor and a lower insertion loss of only 1.1 dB. The filter is also extremely slim which is beneficial.
“RF spectrum is a limited resource and with the continuously growing number of communication services it is becoming ever more densely populated. In particular, the WLAN and Bluetooth band between 2400 MHz and 2483 MHz is separated by just ≤20 MHz from the new bands 7, 40 and 41 that are used for LTE cellular service,” researchers said.
“Thanks to the new filter’s excellent insertion loss and high out-of-band selectivity, the B8831 is able to prevent the signals in the adjacent WLAN/Bluetooth and highband cellular bands from interfering with each other. This helps to reduce power consumption in smartphones without affecting performance.”
