B39921B3726U410 Filters

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SAW Filters

Surface acoustic wave (SAW) filters are analog signal processing devices which use acoustic waves as the filter medium. They are used to reject or pass certain frequencies from a signal chain. SAW filters are employed in places where signal purity is paramount, such as cellphone base stations, wireless communication systems, automotive radar, GPS, smartphone RF front ends, biomedical instrumentation, amplifier linearization and precision frequency references.

B39921B3726U410 Application Field

The B39921B3726U410 SAW filter is a highly miniaturized surface acoustic wave (SAW) device based on advanced laser trimming technology. It works in a frequency band of 698 to 960 MHz, making it suitable for various wireless systems including the International Mobile Telecommunications (IMT) cellular and the Code Division Multiple Access (CDMA) systems.

SAW filters are the key components that rectify wireless signals through impedance matching, noise cancellation, and frequency selection. The B39921B3726U410 boasts of low insertion loss, low phase noise, and high image suppression properties, making it ideal for cellular phone front-end, RFID readers and radio transmitters. Furthermore, its small size and light weight make the B39921B3726U410 a perfect choice for a variety of applications, especially those requiring low profile.

B39921B3726U410 Working Principle

The B39921B3726U410 SAW filter works by mixing two different frequencies of an incoming signal and then transferring energy among these frequencies. At the same time, these frequencies vibrate the resonators built into the B39921B3726U410 filter. Through this vibration, the energy is dispersed and the frequency characteristic properties of the B39921B3726U410 filter can be achieved.

Specifically, it works on the principle of surface acoustic waves. Propagating on the surface of the filter, these waves bring about attenuation of certain frequencies in the input signal while letting most others pass. This is achieved by mixing the input signal with the signal generated by the surface acoustic wave while passing through the filter, thus creating low or high pass filters.

Moreover, the B39921B3726U410 SAW filter can also be used to create band-passes and notch filters through which specific frequencies can be blocked. These filters are useful for shaping the frequency response of signals, enabling them to perform better for their intended applications.

Conclusion

The B39921B3726U410 is an advanced, Miniaturized SAW filter designed for use in high frequency wireless communication and data processing applications. It can be used in various systems, such as IMT cellular and CDMA systems, and its small size and weight make it perfect for low profile applications. The B39921B3726U410 works on the principle of surface acoustic waves that allow for the selection and blocking of certain frequencies of the input signals. The B39921B3726U410 is capable of creating low and high pass filters as well as notch filters which are particularly useful for shaping the frequency response of signals in order to maximize their performance.

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