B39431B3909U410

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Surface acoustic wave (SAW) filter is an important component in modern communication system, which is mainly used to select the frequency spectrum band. B39431B3909U410 is a surface acoustic wave (SAW) filter developed by Murata Company. This device has wide application field and working principle.

The main application fields of B39431B3909U410 filter are communication equipment and automotive electrical systems. In communication equipment, B39431B3909U410 can be used in various forms, such as mobile communication base station, PHS system, etc. Automotive electrical systems can utilize the B39431B3909U410 filter to decrease the harmonic wave of electric power supply system, reducing the noise of auto electronics and avoiding the interference between electric signal and electronic equipment.

The working principle of B39431B3909U410 is based on the acoustic wave propagation. When electric signal is input on the B39431B3909U410 filter, it will convert the electric signal into mechanical waves on the piezoelectric substrate. The mechanical wave will propagate along the surface with a constant speed, and various kinds of filter elements will be used to filter the mechanical wave. After receiving the filtered mechanical wave, the filter will convert it into electric signal with low energy loss and deliver it to the output. In addition, the B39431B3909U410 filter also uses the devices such as damping and reflection to reduce the wave attenuation.

The wavelength of the mechanical wave and the electrical signal are different, but equivalent in the process of propagation, in which the AC electric signal is converted to AC mechanical wave. The mechanical wave propagates along the surface of the substrate, so this filter is called “surface wave filter”. B39431B3909U410 filter has distinguishing features such as small size, lightweight, low cost, low insertion loss and low distortion.

The basic performance parameter of B39431B3909U410 filter includes pin style, insertion loss, center frequency, temperature coefficient of frequency, pass band ripple, and pass band center frequency. In order to verify the performance parameter of the filter, we must use specific testing system and can obtain the test result. we need to measure the frequency response of the B39431B3909U410 filter through these testing device and then compare with its actual value.

B39431B3909U410 filter is a surface acoustic wave (SAW) filter used for communication equipment and automotive electrical systems. It converts the electric signal into mechanical wave on the piezoelectric substrate, and use various filter elements to filter the mechanical wave. After receiving the filtered mechanical wave, the filter will convert it into electric signal with low energy loss and deliver it to the output. It has distinguishing features such as small size, low cost, low insertion loss and low distortion.

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