SF2098E

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Surface Acoustic Wave (SAW) filters are electronic components used in wireless communication. They are widely used in mobile and RF communication networks, cellular phones and broadcasting equipment to improve their transmission quality by reducing noise and enhancing their signal power. The SF2098E is one of such components, which offers superior performance in the challenging RF band. It consists of a piezoelectric SAW substrate with interdigital transducers (IDTs) printed onto it. The IDTs are basically electrodes that vibrate the substrate in the presence of radio frequency (RF) signals and thus permit filtering of undesired frequencies. When the matched frequencies of the IDT and the substrate resonate, causing frequency-selective amplification.

The SF2098E surface acoustic wave filter offers an excellent performance over the challenging band of 4.15 GHz to 4.85 GHz in the industry. It utilizes a thin film HF-TA (high frequency thin-film transducers array) on a low temperature co-fire ceramic (LTCC) carrier module made of alumina or beryllia. With a small size of 6mm x 8mm and a lightweight of only 4.6g, the SF2098E is an ideal choice for a variety of wireless applications such as 5G services, cellular networks, and broadcasting equipment. Furthermore, the filter boasts a high rejection performance of more than 70 dB at the targeted operating frequency, which accounts for its performance superiority over other similar devices.

The SF2098E has a wide set of applications in the field of wireless communications. It can be used for filtering out external noise and controlling interference in cellular and telecom networks as well as broadcasting equipment. Additionally, due to its high isolation level and low passband insertion loss, it can be employed for suppression of transmitter-generated noise and impairment of signal quality in 5G microwave and long-range networks, for RF-signal tuning in radar systems, and for signal refinement in mobile communication antennas.

The working principle behind the SF2098E is based on the resonant principle, whereby the accurately designed piezoelectric substrate and IDTs together generate acoustic wave attenuating electromagnetic fields. When the operating frequency of the IDT and the substrate resonate, they cause frequency-selective amplification, producing a transmission curve that attenuates out-of-band signals. Additionally, the device\'s micro-electromechanical-system (MEMS) design allows stable frequency response and practically unlimited temperature compensation for varying ambient and load conditions.

In summary, the SF2098E is an ultra-small size surface acoustic wave filter. It operates well over the challenging RF band and is suitable for a variety of applications related to wireless communications and broadcasting equipment. Its HF-TA thin-film transducer technology offers superior performance over other similar devices, with high rejection performance and low passband losses. In addition, it has an advanced MEMS design, which provides a stable frequency response as well as unlimited temperature compensation.

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