B39851B8647P812S5

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Surface acoustic wave (SAW) filters are specialized components used in many consumer and commercial products to control signals and improve audio and video quality. With a wide range of applications, SAW filters are highly popular in the telecommunications industry, home entertainment systems, medical devices, and more. The specific model B39851B8647P812S5 is an example of a SAW filter that is manufactured by Murata, a leading technology company specializing in the production and sales of electronic components.

Application Field

SAW filters are used in many different devices and systems. Most of them require filters for controlling both analog and digital signals. The B39851B8647P812S5 is specifically designed for filters in the 200MHz-1GHz range, making it suitable for cellular and wireless applications. It is also used in television receivers, military radio communication, satellite communications, and many other applications.

The SAW filter is also used for broadband signal processing. This includes modulation and demodulation methods, channelization, coding and decoding, frequency control, and power control. The SAW filter is also used in many medical devices including scanners, imaging systems, cardiographs, and lab analysis equipment.

Working Principle

SAW filters have the ability to separate out signals of different frequencies in order to produce a desired output. This is done through the use of surface acoustic wave (SAW) technology. This technology involves a piezoelectric transducer, which transforms electrical impulses into mechanical vibrations. These vibrations propagate along a surface and are affected by the attenuation and reflection coefficient of the surface.

The vibrating waves create an interference pattern that influences the characteristics of the filter. This includes the frequency response, stop-band, and pass-bands of the filter. The resonators of the filter can be tuned to the desired frequency by adjusting the size and shape of the conductive area in which the wave propagates. Once the frequency of the filter is tuned, it can be used to filter out signals outside of the desired range.

The B39851B8647P812S5 SAW filter has a ripple and stop-band that is less than ±1dB and is capable of supporting temperatures up to 125°C and operating voltages up to 10V. It is also designed with a low insertion loss of <0.2 dB and a high rejection ratio of >10dB. This makes it suitable for a wide range of applications, and is ideal for use in medical, military, broadcast, and cellular systems.

Overall, the B39851B8647P812S5 SAW filter is a reliable and highly versatile component. It has a wide range of applications in both consumer and commercial products, and is capable of delivering excellent noise suppression and signal clarity. It is also highly temperature tolerant and has a high operating voltage, making it suitable for a variety of industrial and medical applications.

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