TFS400B - Vectron International

TFS400B SAW Filter Specification

tfs400b.doc version 1.1 17.03.2000 _____________________________________________________________________________________________________ VI TELEFILTER SAW Filter Specification TFS 400 B 1/5 _____________________________________________________________________________________________________ Application The filter is suitable for GSM, DCS 1800 and dual band.

Features

lative attenuation arel of the TFS 400 B is the minimum of the pass band attenuation amin. The minimum of the pass band attenuation amin is defined as the insertion loss ae. The centre frequency fo is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 400 MHz without tolerance. The given values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also if the centre frequency fo is shifted due to the temperature coef.