SF2120C

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Surface acoustic wave (SAW) filters are widely used for high-frequency signal filtering in both professional and consumer electronic applications. TheSF2120C is an example of a SAW filter. It is a low-temperature-cofiring ceramic (LTCC) SAW filter designed to operate at frequencies of about 2.5 GHz and higher. This article aims to provide an overview of the application field and working principle of the SF2120C.

Applications of SF2120C

The SF2120C is a high-performance SAW filter with excellent frequency accuracy, repeatability, and temperature stability. It is tuned to the specific needs of the application and has the ability to filter out unwanted RF signals. It has a wide range of applications, including:

• Wi-Fi applications
• Bluetooth applications
• LTE applications
• 4G applications
• IoT applications
• Broadband communications
• GPS applications
• Medical applications

The SF2120C is particularly well-suited for Wi-Fi applications. It can be used to filter out undesired interferences from other Wi-Fi users in the area and provide an improved range and signal strength. Additionally, the SF2120C has been used for Bluetooth and LTE applications due to its high frequency accuracy.

Working Principle of SF2120C

The SF2120C is a SAW filter which uses ultrasonic waves to filter a given radio frequency signal. This technology works on the principle of acoustic- wave propagation through a piezoelectric material. It is essentially an electronic filter which can select or reject frequencies within a given range. It operates by producing an acoustic wave in the piezoelectric material which travels towards the electrodes. When the frequency of the RF signal is equal to the resonant frequency of the filter, the RF signal is amplified and passed through to the input/output terminals. Otherwise, the signal will be blocked and the desired frequency signal will be transmitted.

The SF2120C is a sophisticated SAW filter with excellent frequency accuracy, repeatability, and temperature stability. It is made of LTCC, which is a type of ceramic material that is fired at low temperatures and is highly resistant to temperature variations. This makes the SF2120C suitable for use in environments with wide temperature fluctuations, such as automotive and other mobility applications.

Conclusion

The SF2120C is a high-performance SAW filter that is used in a variety of professional and consumer electronic applications. It operates on the principle of acoustic- wave propagation through a piezoelectric material, and is designed to filter out undesired RF signals. Additionally, the SF2120C is made of LTCC, which makes it suitable for use in applications with wide temperature fluctuations. As such, it is an ideal choice for Wi-Fi, Bluetooth, 4G, IoT, broadband communications, medical, and GPS applications.

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