B39162B8839P810

Surface acoustic wave (SAW) filters are a type of device used to separate or modify electrical signals. They are widely used in the telecommunications, automotive and consumer electronics industries, among others. SAW filters are particularly useful because they are able to reject unwanted signals, while amplifying and maintaining the quality of desired signals through a variety of means, such as bandpass filtering, attenuation, and signal shaping. The B39162B8839P810 is a typical example of a SAW filter, and its application field and working principle will be discussed in this article.

Application Field

The B39162B8839P810 is a specification-grade SAW filter designed for use in high-frequency applications. This filter has a center frequency of 1.9 GHz, and a passband bandwidth of 328 kHz, which makes it suitable for various radio-frequency applications such as digital cellular, cellular phone, and radio transceiver systems, as well as WLAN systems and cable television systems. In addition, the B39162B8839P810 is capable of rejecting undesired signals up to 2.5 GHz, which offers a high level of immunity to adjacent channel interference.

Working Principle

SAW filters are based on surface acoustic waves (SAWs). In a SAW filter, electrical signals are converted into mechanical waves on the surface of a piezoelectric material, such as quartz or ST-XO, through the application of electric fields. These mechanical waves propagate along the surface of the material, until they reach a reflecting layer, where they are reflected. The reflected waves then propagate back along the surface of the material, and when they reach the input of the filter they are converted back into electrical signals. This process can be repeated several times, which leads to the amplification and shaping of the input signal.

The B39162B8839P810 SAW filter works on the same principle. It consists of a quartz crystal resonator coated with electrodes on both sides. The input signal is applied to the electrodes, which then convert it into mechanical waves, which propagate along the surface of the crystal. The signals are then reflected by the filter’s resonator plates and travel back to the input, where they are reconverted into electrical signals. The filter then performs its various tasks, such as rejecting unwanted signals and amplifying desired signals, before the final output is produced.

Conclusion

The B39162B8839P810 is a specification-grade SAW filter designed for high-frequency applications. Its application field and working principle have been discussed in this article. The B39162B8839P810 is capable of rejecting undesired signals up to 2.5 GHz, while amplifying and maintaining the quality of desired signals through a combination of bandpass filtering, attenuation, and signal shaping. This makes it an ideal choice for use in telecommunications, automotive, and consumer electronics industries.