B39202B9841P810 Filters

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SAW filters are widely used components in electronics. They are typically composed of multiple coupled piezoelectric crystals and are used in radio frequency and microwave communication systems. The B39202B9841P810 SAW filter is an example of such a filter.

At its core, the B39202B9841P810 SAW filter is composed of a set of coupled piezoelectric resonators. This set of resonators consists of a central comb-line resonator, and a pair of identical end-coupled resonators. The resonators are all connected via metal contacts that carry the RF signal.

The central comb-line resonator comprises two conductive tracks that are separated by a piezoelectric layer. The characteristic features of the piezoelectric material determine the shape of the comb line resonator, and hence the performance of the SAW filter. These characteristic features can be tailored to different applications, allowing for filter functions to be readily customized.

The end coupled resonators are also composed of two conductive tracks separated by a piezoelectric layer. However, in contrast to the central comb-line resonator, the operation of the end-coupled resonators depends on the coupling between the tracks, rather than their inherent characteristics. This permits a wider range of filter functions to be designed. For instance, the B39202B9841P810 is designed to operate as a band pass filter.

In a band pass filter, some frequencies will be allowed to pass through the filter, while other frequencies will be rejected. The frequencies that are allowed to pass are known as the pass band, and the frequencies that are rejected are known as the stop band. The stop band frequencies will correspond to the resonant frequency of the coupled piezoelectric resonators.

The B39202B9841P810 SAW filter is designed to operate in the UHF frequency range, between 300MHz and 500MHz. This makes it ideally suited for use in mobile radios, terrestrial TV transmitters, satellite communications systems and other systems that require band pass filtering in this frequency range.

The working principle of the B39202B9841P810 SAW filter is fairly simple. When an RF signal is applied, the electrical energy is converted into mechanical energy by the piezoelectric resonators. The mechanical energy travels through the filter, and the frequencies allowed to pass through the filter correspond to the resonant frequencies of the resonators. The frequencies that are rejected by the filter correspond to the frequencies of the stop band.

The B39202B9841P810 SAW filter is a reliable and durable component, which makes it suitable for use in a variety of applications. Its high performance and small size make it an attractive choice for many designers. Combined with its wide frequency range, the B39202B9841P810 SAW filter is an ideal solution for many RF and microwave applications.

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