F5QA788M0M2QB-J Filters

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Surface acoustic wave (SAW) filters are important components used for electromagnetic signal processing in various applications. F5QA788M0M2QB-J is a type of SAW filter specifically designed for use in cellular telephones, satellite communications and other applications. In this article, we will discuss the application field and working principle of F5QA788M0M2QB-J.

The F5QA788M0M2QB-J SAW filter is intended for use in GSM and DCS bands of mobile phones. It provides an impressive insertion loss of 4 dB, making it suitable for use in applications involving high power levels. It is also compatible with LTE frequencies, allowing for extended coverage and improved signal quality. The filter has a high rejection level of 40-50 dB over the entire GSM/DCS frequency range, which provides considerable interference protection. Additionally, the filter has a temperature coefficient of -1.2 ppm/°C, making it stable and reliable in extreme temperatures.

The F5QA788M0M2QB-J SAW filter module consists of a series of thin metal electrodes on a ceramic substrate. These electrodes are covered with a layer of piezoelectric material, such as quartz or ceramic, which exhibits a mechanical vibration when a voltage is applied to it. This vibration produces a surface acoustic wave which propagates along the electrode/piezoelectric layer interface. The SAW filter reduces the amount of unwanted energy signals by reflecting and absorbing them at several points between the electrodes.

The F5QA788M0M2QB-J SAW filter is constructed using a Butt joint architecture. This design requires two metal layers with different drill depths in order to form the five electrodes. The layers are then soldered together, forming an RF-tight air gap between them. This prevents RF signals from leaking out, allowing the filter to provide more favorable rejection characteristics and reduce insertion loss. Additionally, the filter is constructed using a double-sided printing process which eliminates the need for additional components such as capacitors and inductors.

The F5QA788M0M2QB-J SAW filter is a highly efficient and reliable filter that can be used for a wide range of applications. In addition to being used for cellular telephones and satellite communications, the filter is ideal for use in Wi-Fi, Bluetooth, ZigBee, ISM and other applications. It is also suitable for use in home automation, industrial control systems, medical instruments and automotive applications.

In conclusion, the F5QA788M0M2QB-J SAW filter is an ultra-low loss filter that is suitable for a wide variety of applications. It provides excellent insertion loss of 4 dB, high rejection of 40-50 dB and a temperature coefficient of -1.2 ppm/°C. The filter is constructed using the Butt joint architecture and double-sided printing process, which allows for improved rejection characteristics and reduced insertion loss. This makes the F5QA788M0M2QB-J an ideal solution for cellular telephones, satellite communications, Wi-Fi, Bluetooth, ZigBee, ISM and other applications.

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