B39881B4405P810

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Surface Acoustic Wave (SAW) filters, like the B39881B4405P8100, are frequency-selective devices which, in their simplest forms, process signals with one frequency or a small range of frequencies and either reject or pass them through. Developed from quasi-optical devices, they have proven to be economical and readily available in a variety of topologies and bandwidths. SAW filters have been widely used in radio services and various other applications, such as radio receivers, satellite communications, medical imaging equipment, and defense systems primarily because of their general superiority, in comparison to the analog LC filters in terms of performance, size, and cost.

The B39881B4405P8100 filter is a typical SAW filter composed of two electrodes, as shown in Figure 1. The electrodes are coated either a piezoelectric material such as quartz, or a semiconductor material such as silicon. The electrodes have been etched onto a quartz or semiconductor substrate. The substrate has a band pass filter response when a sinusoidal electrical signal is applied between its two electrodes.

When a signal applied at the input of the B39881B4405P8100, the signal is split into two components. One part with the correct frequency will pass through and the other component with incorrect frequency is blocked and reflected due to the specific characteristic of the filter. The filtered signal is then transmitted to the output with a certain attenuation and delay.

The B39881B4405P8100 SAW filter has a wide range of application fields. It is widely used in wireless sensors networks, flexible radio frequency communications, radio navigation systems, and consumer electronics. Furthermore, it can be used to filter audio signals for sound quality improvement in modern audio systems. The filter also plays a role in eliminating interference in digital signal processing, especially in high speed data transmission.

In summary, the B39881B4405P8100 SAW filter is a highperformance frequency selective device that is widely used in various applications and widely appreciated for its superior performance, compact size and low cost. It has a wide range of application fields, such as wireless sensor networks, audio signal filtering and digital signal processing, and has the advantage of blocking and reflecting unwanted signals while at the same time transmitting desired signals with a certain attenuation and delay.

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