B39941B9814P810W99

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SAW (Surface Acoustic Wave) filters are a type of electronic filter used for radio frequency (RF) communications and signal processing applications. The B39941B9814P810W99 filter, in particular, is an SAW filter specifically designed for LTE applications. This type of filter leverages the effects of surface acoustic waves generated by interdigital transducers (IDTs) and delivered via a piezoelectric substrate to manipulate different frequency signals within an RF communications system.

The B39941B9814P810W99 SAW filter has an operating frequency range between 439.75MHz and 457.25MHz, and a bandwidth of 17.5MHz. It is also designed to operate under a power supply voltage of 5V, with a current draw of ≤ 1000mA. Further, the operation temperature range of this filter is between -30°C and +85°C.

This B39941B9814P810W99 SAW filter features a unique structure design that further helps with RF signal processing. It is comprised of two spectrally combed IDTs that are etched on the piezoelectric substrate, and coupled together during operation. This structure helps boost the design\'s scalability and greatly improves the selectivity of RF signals.

When in operation, the two IDTs generate surface acoustic waves (SAWs) that move in opposite directions and are then deflected by the stubs in the edges of the filter. This creates an array of in-phase and out-of-phase waves, which form a traveling wave in the filter. As the frequency of the regions at which the waves travel is different, it results in a rejection of certain frequencies and the passing of others.

The SAW-induced filtering effect allows the B39941B9814P810W99 to effectively isolate different frequency signals in the band. This makes it an ideal choice for applications that require high selectivity and low insertion losses, such as in LTE cellular systems.

The B39941B9814P810W99 SAW filter also offers other added benefits. For one, its electronics package is surprisingly small. It measures in at just 21.0mm×13.3mm×2.8mm, allowing for greater freedom in the design of products in which it is used. Furthermore, the filter has excellent environmental stability, with its linearity being unaffected by temperature and humidity.

Overall, the B39941B9814P810W99 SAW filter is a reliable and high-performance choice for signal processing applications that demand strong selectivity and little distortion. Its compact design and robust construction make it ideal for use in mobile LTE devices.

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