B39431R0904C210

SAW (Surface Acoustic Wave) filters are widely used in acoustic signaling applications, such as mobile phones, satellite broadcasting, microwaves, and other electronic devices. B39431R0904C210 is one type of SAW filter specially designed for filtering applications.

The B39431R0904C210 SAW filter is a bandpass filter that requires an external cavity. It has a passband of 1.3 GHz to 1.7 GHz, with a center frequency of 1.5 GHz. The SAW filter has a selectivity of 28 dB, and an insertion loss of less than 0.2 dB. Its max RF input power is 1.5 W, the tolerance of the center frequency is +/-20 MHz, and the impedance is 50Ω. It has a very narrow bandwidth, which allows only a certain frequency to pass through, thereby rejecting unwanted signals and improving signal-noise ratio.

The working principle of the B39431R0904C210 SAW filter is based on the acoustic waves generated when a piezoelectric material – such as quartz or LiNbO3 – is subjected to an electrical signal. When an electrical signal is applied to the piezoelectric material, it produces a mechanical wave that propagates along an interdigital electrode, which is etched onto the quartz crystal substrate. The wave is then reflected at the end of the electrode array, converging on the input, where the two waves interfere and form the filter output signal. By changing the electric signal applied to the piezoelectric material, it is possible to control the passband of the filter, thereby adjusting its frequency response.

The B39431R0904C210 SAW filter is commonly used for applications such as radio receivers, radio transmitters, and RFID tags. It has applications in telecommunications, wireless networks, radar systems, and test and measurement equipment. The filter can also be used in medical ultrasonic equipment and portable electronics. The filter is also used in mobile phones and other appliances to reduce interference and improve the signal-to-noise ratio. For instance, in a mobile phone, the SAW filter is used to reduce interference from unwanted frequencies, such as other mobile phones, background noise, and other sources, while ensuring that the desired signal is transmitted with minimal loss.

In conclusion, the B39431R0904C210 SAW filter is an important component for filtering and improving signal-to-noise ratios in electronic applications. It has a narrow bandwidth, high selectivity, and low insertion loss, making it suitable for many different applications. It can be used for a wide range of applications, such as radio receivers, medical ultrasonic equipment, RFID tags, and more. Additionally, it enables the transmission of desired signals with minimal loss.