Passives

Murata reduces its RF filters footprint by 72%

18th December 2008
ES Admin
0
Two block-type dielectric RF filters for telecoms basestation applications have been added to Murata's GIGAFIL range. The filters have been designed for cellular basestation applications which use a digital pre-distortion amplifier (DPD), as they feature a wide pass band and flat ripple performance, which are required for DPD PA design.
The filter's small size (10.6 x 6.0 x 4.8mm) means they require 72% less mounting space compared to Murata's previous generation of filters for this application.

The DFCL52G14LFHAB-TT1 is for use in W-CDMA Band1 DPD amplifiers, while the DFCL52G14LFHAA-TT1 will be used in W-CDMA Band1 LTE DPD amplifiers.

The filters' highly sophisticated multi-pole design ensures high attenuation, and good selectivity. Both the two new members of the GIGAFIL series have a ripple of 0.4dB max. @ f0+/-30MHz and 1.2dB max. @ f0+/-65MHz, producing the wide and flat curves required at the pass band by DPD amplifier designs.

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