B39311B3534A410

Series:	*
Part Status:	Not For New Designs
Lead Free Status / RoHS Status:	--
Bandwidth:	--
Moisture Sensitivity Level (MSL):	--
Insertion Loss:	2.7dB
Ratings:	AEC-Q200
Applications:	Remote Control
Mounting Type:	Surface Mount
Package / Case:	8-SMD, No Lead
Height (Max):	0.051" (1.30mm)
Size / Dimension:	0.150" L x 0.150" W (3.80mm x 3.80mm)

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Introduction to SAW FiltersSAW (Surface Acoustic Wave) filters, as their name implies, are electronic filters that use surface acoustic waves (SAWs) that propagate across a surface medium to filter out or modify improperly configured signals. Generally comprised of thin film transducers mounted on a piezoelectric substrate, SAW filters offer superior filtering accuracy and efficiency when compared to other varieties of filters, and are also extremely low cost. As a result, they have found tremendous utility in a variety of applications, from satellite communications to consumer electronics.B39311B3534A410 Application Field and Working PrincipleThe B39311B3534A410 is a type of SAW filter designed for use with cell phones and other mobile devices operating in the GSM (Global System for Mobile Communication) band. This filter, which has a center frequency of 895.9MHz and a bandwidth range of 85-25MHz (-3dB to -60dB), is able to offer superior signal consistency and selectivity in a compact form factor, making it ideally suited for use in mobile applications such as cell phones, PDAs and portable radios.In terms of its working principle, this filter operates by utilizing surface acoustic waves (SAWs) that propagate along a piezoelectric substrate. The SAWs produced contain frequency components which match the desired frequencies, and when the unwanted frequencies are introduced, they are more strongly reflected than the desired frequencies, thereby allowing for improved signal selectivity.Additionally, the B39311B3534A410 also uses a “notch filter” concept in order to reduce the effect of image frequencies and other spurious noises on the desired frequency signals. This concept works by introducing an additional filter component in order to create a band-stop filtering shape, so as to reduce the level of interference from outside sources.ConclusionThe B39311B3534A410 is an example of a surface acoustic wave filter designed for use in GSM-band mobile applications. This filter utilizes surface acoustic waves propagating along a piezoelectric substrate to filter out undesired frequencies and optimize the selectivity of desired signals. Additionally, this filter also makes use of the “notch filter” concept in order to reduce the effect of image frequencies and other spurious noises. As a result, these filters are ideally suited for use in a variety of applications, from satellite communications to consumer electronics.

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