B39941B8667P810

SAW (Surface Acoustic Wave) filters are a type of electronic filter designed to differentiate sounds of different frequencies. The B39941B8667P810 SAW filter is one such filter, designed for radio applications. It is capable of working in bands from 1400 MHz to 1700 MHz with an insertion loss of less than nominally 2.6dB.

Application Field

The B39941B8667P810 SAW filter is designed for high frequency applications in mobile phone, LTE and WCDMA base station receivers. It is suitable for mobile communication systems, digital audio broadcasting (DAB) receivers, and software defined radio (SDR) implementations. It can also be used in tracking and navigation systems such as GPS.

Working Principle

The B39941B8667P810 SAW filter works by reflecting acoustic waves off the surface of a crystal. It is designed as an analogy filter that is used to transform an input signal into a totally different signal. The SAW filter then serves to reject or pass certain frequencies depending on its tuning characteristics.

The B39941B8667P810 SAW filter incorporates two transducers in series: a delay line transducer and an input transducer. The input transducer produces an acoustic wave which is then imparted into the surface of the SAW substrate. This wave then propagates along the substrate and is received by a pair of reflectors and then again travels to a pair of interconnected transducers. The interference between the waves generated by the transducers is used to either pass or reject certain frequencies depending on the tuning parameters of the filter.

The B39941B8667P810 SAW filter also incorporates a digital temperature compensation system to ensure better performance and stability under temperature variations. This feature makes the filter suitable for high-temperature conditions.

In general, the B39941B8667P810 SAW filter offers low cost and simplicity of design with high-performance characteristics. Its robust design, low insertion loss, and temperature compensation make it an ideal choice for radio applications.