SF1186E-1

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Surface acoustic wave (SAW) filters are essential components in a variety of radio-frequency (RF) systems. They are used in radio, television, and mobile communication devices to provide band pass filtering capabilities in a wide range of frequencies. The SF1186E-1 is a single-pole high pass filter in a miniature package designed for use in mobile communications. It features a passband of 0.8 to 2.8 GHz, a low insertion loss of 2.5 dB, and a rejection of more than 32 dB.

The SF1186E-1 filter consists of two SAW delay lines connected in series with a single SAW resonator in between. The delay lines consist of two piezoelectric transducers separated by an interdigital transducer (IDT) structure. Each transducer is composed of two electrodes, one above and one below the piezoelectric substrate. The SAW device is designed to convert electrical signals to acoustic waves that travel along the substrate, passing through a metalized area between the two transducer electrodes. The waves are then reflected off the IDT structures and back to the electrical contacts. The IDT device acts as a band pass filter, allowing only specific frequency signals to pass through.

The SF1186E-1 is typically used in mobile phones, wireless video cameras, and other RF devices to provide frequency synthesis, modulation/demodulation, and signal selection. Its high insertion loss and rejection allow it to be used in a variety of wireless communications to reduce interference and unneeded frequencies. In applications where the frequency range is greater than that of the filter, the SF1186E-1 can be cascaded with other SAW filters to increase the bandwidth. Being able to cascade multiple SAW filters increases the range of frequencies that can be filtered, and also helps reduce the number of components needed in a wireless communications system.

The SF1186E-1 also has a high stability factor, meaning that it can maintain its performance over a wide range of temperatures and operating conditions. In addition, the filter’s small size and low power consumption make it ideal for use in portable devices. Its low cost, high reliability, and wide operating range make it a popular choice for wireless communications applications.

Overall, the SF1186E-1 SAW filter is an effective device for reducing interference and unneeded frequencies in a variety of wireless applications. It has a wide operating frequency range, high insertion loss and rejection, and a high stability factor. In addition, its small size and low power consumption make it suitable for use in portable devices. The SF1186E-1 is a convenient and cost-effective solution for wireless applications.

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