B39242B8857L210

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

SAW filters are used to filter out any unwanted signals in order to improve the performance of an overall system, and are widely used in mobile communication systems. The B39242B8857L210 SAW filter is a bandpass filter specifically designed for the application of mobile communication systems. It is made up of two parts, the actual filter and the amplifier, in order to provide a suitable signal level. In terms of its application, the B39242B8857L210 SAW filter is used as the transmit (Tx) filter module in the mobile base station transmitters. Its main purpose is to filter out the unwanted signals due to passband interferences while allowing the passband signal to be transmitted with minimal distortion. In terms of its working principle, it is a piezoelectric effect-based filter that creates a resonance frequency selective to the predetermined pass band when an alternating electric field is applied to the filter. This filter is made up of a set of interdigital electrodes and a piezoelectric support substrate is placed beneath the electrodes. This substrate interacts with the alternating electric field that is applied to the filter and vibrates due to the piezoelectric effect. The vibrating substrate is then cut or surface formed into a pole piece that is coupled to the interdigital electrodes. This allows for a desired electrical-acoustic transduction, making the filter resonate at the predetermined frequency, thereby effectively passing the passband signal. The amplitude of the vibration can be controlled by adjusting the gain of the amplifier. By doing so, any harmonically related signals outside the passband can be filtered out and the transmitted signal can be optimized.

In conclusion, the B39242B8857L210 SAW filter is used as a transmit (Tx) filter module in the mobile base station transmitters to filter out any unwanted signals outside the predetermined passband. Its working principle is based on the piezoelectric effect, wherein the filter is made up of a set of interdigital electrodes and a piezoelectric substrate. This substrate vibrates due to the electric field that is applied and this resulting vibration allows for the predetermined passband signal to be effectively passed with minimal distortion while filtering out any harmonically related signals outside the passband. With the right adjustment of the amplifier, the transmitted signal can be optimized.

The specific data is subject to PDF, and the above content is for reference