B39881B9861P810

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SAW (Surface Acoustic Wave) Filters are one of the main components of modern electronic systems. They are mainly used to filter out undesired frequencies, enabling the desired frequencies to pass through and be used in a device. The B39881B9861P810 is a type of SAW Filter with a specific set of characteristics and an associated application field and working principle.

Description

The B39881B9861P810 SAW Filter is a dual-mode filter with a low insertion loss design, which is ideal for applications that require low pass-band ripple. It is designed for use in cellular and Wi-Fi communication systems and has a frequency range of 1.8 GHz to 3.8 GHz. The B39881B9861P810 SAW Filter has a centre frequency of 2.8 GHz and a frequency rejection band of 70 MHz minimum. It is also designed with a wide stopband rejection to suppress interference from neighbouring channels.

Application

Because of its characteristics, the B39881B9861P810 is suitable for a variety of applications. The dual-mode filter with low insertion loss makes it well suited for transmission-line switching and multiplexing applications, ideal for GSM, CDMA, and WCDMA systems. It is also broadly used in Wi-Fi systems where low pass-band ripple is required in the most critical stage of the baseband signal processing. In addition, the wide stopband rejection of the B39881B9861P810 enables it to be used for adjacent-channel interference rejection.

Working Principle

The B39881B9861P810 SAW Filter works on the principle of acoustic resonance. A high-frequency electrical signal, typically generated by a piezoelectric material, is directed onto a surface. This signal is transformed into an acoustic wave that travels along the surface and interacts with the filter elements embedded into the surface. Depending on the characteristics of the filter elements, the acoustic wave is either transmitted or reflected. In the case of the B39881B9861P810, the filter elements are designed to transmit the frequencies in the passband and reflect the frequencies in the stopband, thus reducing interference and enabling the desired frequencies to pass through.

Conclusion

The B39881B9861P810 SAW Filter is a type of dual-mode filter designed for applications in cellular and Wi-Fi communication systems. It has a wide stopband rejection for interference rejection, and a low insertion loss design for low pass-band ripple. The B39881B9861P810 works on the principle of acoustic resonance, where high frequency electrical signals are transformed into acoustic waves that interact with the filter elements embedded in the surface, allowing the desired frequencies to pass through while rejecting the undesired frequencies.

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