B39212B9864P810

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SAW filters are essential components of electronic systems requiring precision frequency control. B39212B9864P810 is a symmetrical monolithic surface acoustic wave (SAW) filter used in wide variety of applications. This article will discuss the application field and working principle of the B39212B9864P810.

Applications

The B39212B9864P810 can be used as an RF band-pass filter for wireless communication systems. It is a suitable choice for wireless infrastructure and consumer applications. It can be used in 2G/3G/4G femtocells, small base stations, wireless local loops, W-IMT (wireless-IMT), and wireless security systems. It is also suitable for other applications which require a narrow-band pass within a wider passband, such as Wi-Fi, WiFi-multimedia (WMM), and Bluetooth applications.

Additionally, the B39212B9864P810 is suitable for high performance motion and vibration sensor applications. It can be used in mobile handsets which require acceleration sensing capabilities or for micro-mechanical systems (MEMS) which require a signal processing element. As a final application, the B39212B9864P810 can be used in battery management systems, providing accurate signal filtering to prevent false alarms.

Working Principle

The B39212B9864P810 is a small and thin high performance SAW filter. It is a symmetrical device based on a quartz surface, which gives it superior radio frequency (RF) performance in terms of insertion loss and passband ripple. The filter works by passing signals through an active region of the quartz surface which is surrounded by a passive region.

The passive region is composed of a maze-like structure of micro-electro-mechanical systems (MEMS). Each of these structures has the ability to resonate at a particular frequency. As a signal passes over the quartz, it will pass through the various structures and be filtered according to its frequency. This allows the filter to reject signals outside of its passband, resulting in a high signal to noise ratio.

The B39212B9864P810 is a low profile, high performance filter. It has a low insertion loss of 1.0 dB and a stop band rejection of better than 50 dB. It is extremely easy to implement and does not require external components. It also has a frequency range of 1.8-2.2 GHz, making it well suited for wireless applications.

Conclusion

The B39212B9864P810 is a high performance SAW filter used in a wide variety of applications. It is suitable for RF band-pass filter, motion and vibration sensor, and battery management applications. It features a low insertion loss of 1.0 dB and a high stop band rejection of better than 50 dB. With its large frequency range of 1.8-2.2 GHz, the B39212B9864P810 is an ideal choice for wireless applications.

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