RF3336D

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Surface Acoustic Wave (SAW) filters are distinctive thin-film components that are capable of performing alterations to radio frequency signals with high performance, high productivity, and small size. The RF3336D is a SAW device designed for mobile phone applications — specifically for cellular phone operating between the 824-960 MHz and 1710-2170 MHz frequency bands, which are common frequencies used by GSM and DCS. It is commonly used to reduce the adjacent channel interference within these bands.

SAW devices produce their unique filtering abilities by using acoustic waves generated on piezoelectric materials and structures. They function by sending an input signal across a piezoelectric filter material. Acoustic waves are thereby produced in the piezoelectric material and will travel along the surface of it until they reach the opposite end of the filter.

The RF3336D uses a particular type of filtering construction, called an interdigital transducer (IDT). The IDT consists of multiple metallic electrodes deposited onto the surface of the piezoelectric material. An input signal is applied between a pair of specified electrodes, causing the surface of the piezoelectric material to vibrate, and generate acoustic waves. These acoustic waves include the same frequency components of the input signal, but at different amplitudes.

These acoustic waves then travel along the surface of the filter material, reflecting off of the successive IDT electrodes and producing a transmission loss at each one. At the opposite end of the filter, the transmitted acoustic waves are converted into the electric signal again, while maintaining or deleting certain frequencies, thus providing the intrinsic filtering capabilities of the SAW filter.

The RF3336D is specifically designed to reduce the adjacent channel interference within the 824-960 MHz and 1710-2170 MHz frequency bands. It is built using a unique construction and is designed to perform with a maximum insertion loss of 18 dB — more than enough to minimize the interference in these common frequency bands.

The RF3336D is also designed with a very low operating power, making it an extremely efficient device that can operate for years on a single battery. Additionally, it is capable of withstanding a wide range of temperatures, making it ideal for use in all sorts of weather conditions.

Overall, the RF3336D is a well-designed and highly capable SAW filter specifically designed for use in GSM and DCS-based cellular phones, and can perform its function of reducing the adjacent channel interference in the 824-960 MHz and 1710-2170 MHz frequency bands with great efficiency. Its small size and long-term reliability make it one of the best filter options for such applications.

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