SF1186K-3 Filters

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Surface Acoustic Wave (SAW) filters are signal processing devices which employ the transmission of acoustic waves on the surface of substrate (piezoelectric material), hence the name. The input signal is converted into mechanical energy that traverses the substrate, where the filter\'s transmission/reflection characteristics are changed dynamically. It is also possible to put active elements on the surface of the substrate in order to create a tunable bandpass filter.

The SF1186K-3 is a surface acoustic wave filter designed for operation in a 3.3V system, with a minimum of 0.6V power supply. Its center frequency is 2.54GHz, with a passband of 7MHz. It has excellent passband flatness and phase characteristics, making it ideal for applications such as Wi-Fi, cellular communication systems, military communication, and satellite communication.

The working principle of the SF1186K-3 is based on the Surface Acoustic Wave (SAW) filter. It utilizes a piezoelectric material to generate waveguide-like disturbances on the surface of the substrate, which in turn propagate as acoustic waves travelling through the substrate. As the waves propagate, they experience the stop band or the pass band where the acoustic waves interact with the filter substrate’s intrinsic features.

In the SF1186K-3, the input signal is input into the acoustic wave source, which is then transformed into acoustic waves that propagate through the substrate. As the waves pass through the substrate, they experience the stop band and the pass band of the filter. In the stop band, the wave energy is reflected; in the pass band, the wave energy is allowed to pass through, effectively transmitting the input signal.

The SF1186K-3 is ideal for applications such as Wi-Fi, cellular communication systems, military communication, and satellite communication, since its excellent passband flatness and phase characteristics make it suitable for such demands. Moreover, its small size and low power consumption also make it suitable for applications that require minimum board space and energy efficiency.

The SF1186K-3 is a reliable and cost-effective surface acoustic wave filter for a digital signal processing system. Its low profile design allows it to be mounted on standard printed circuit boards and its low power consumption makes it suitable for a wide variety of low power applications. Furthermore, by utilizing the latest techniques in SAW filter design, the SF1186K-3 provides excellent performance in a wide range of signal processing applications.

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