B39881B7701B610 Filters

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SAW filters are a form of radio frequency (RF) filter technology that use Surface Acoustic Wave (SAW) traveling wave structures to achieve high selectivity in signal bandwidths ranging from tens of kHz to over 2 GHz. The B39881B7701B610 is a type of SAW filter. It has numerous applications and works according to a specific principle.

Application Field

The B39881B7701B610 is designed to function as a duplexer in GSM and UMTS mobile communications, and it typically provides high rejection, low insertion loss, and fast switching in the 800MHz to 2600MHz range. The filter is often used in cellular base stations and mobile phone devices with RF transceivers.

In addition, the B39881B7701B610 has a variety of applications including wireless audio, video, and broadcast radio. Similar filters can also be used in personal computers, medical instruments, satellite navigation systems, RFID tags, and other low voltage applications.

Working Principle

Surface acoustic wave (SAW) filters are RF frequency filters which work by passing radio frequency signals through a layered stack of piezoelectric material. Piezoelectric materials generate an electric signal when they are physically or acoustically shaken. This process of converting one form of energy into another is called the piezoelectric effect.

The B39881B7701B610 is a SAW filter. It works by allowing a given frequency range of radio waves to pass through the layers, while blocking out any other frequency signals. The layers of piezoelectric material are extremely thin and form a sandwich-like structure. A small interdigital transducer (IDT) is placed at the bottom of the pan. As the waves travel through the layers, the IDT converts them into an acoustic wave, and the piezoelectric material converts that wave back into an electrical signal.

The layers of piezoelectric material are narrow and act as bandpass filters, allowing only a certain range of frequencies to pass through. This means that the B39881B7701B610 can be used to separate signals in a high-frequency RF environment. It helps improve the overall signal-to-noise ratio, ensuring clear audio and video signal quality in cellular devices and other applications.

Conclusion

SAW filters, like the B39881B7701B610, are widely used in applications ranging from cellular base stations to wireless audio and video systems. This type of filter works by passing a given frequency range of radio waves through a layered stack of piezoelectric material, while blocking out other frequencies. This ensures maximum signal-to-noise ratio, and clear audio and video signal quality.

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