B39171B3881Z710V3

SAW Filters

Surface Acoustic Wave (SAW) filters are used in many applications, including telecommunications, GPS, radar, and infrared systems. They are commonly used as filters to select frequencies from a broad spectrum of signals received in an electronic system. A SAW filter is an electronic device composed of an array of thin film resistors and capacitors. It is made using a specialized process called lithography. The process involves etching a thin film onto a substrate. Electrodes are formed by depositing an adhesion layer on top of the thin film. These layers are then patterned to form the desired filter elements.

The B39171B3881Z710V3 SAW filter is a surface acoustic filter with relatively high resonance frequency and good quality. It is intended for use in various electronic communication systems such as cellular phones and satellite TV receivers. The filter operates in the LTE/3G/2G band and is designed to pass frequencies from 450MHz to 4.7GHz. It can reject unwanted signals such as noise and interference to ensure crystal clear sound quality.

Working Principle

A SAW filter works by passing an electrical signal through a network of thin film resistor and capacitor components. The signal is modulated by the reactance at each element and is then propagated through the filter. The expelled acoustic wave then reflects off the acoustic reflector and is received by an adjacent element, which adds an electric field to the reactance. This amplifies the frequency band corresponding to that reactance and passes it, while rejecting the rest of the frequencies.

The acoustic reflector in the B39171B3881Z710V3 SAW filter is made up of several layers of alternating high and low acoustic impedance materials. These layers are patterned to act as an acoustic waveguide, which enables the signal to propagate as an acoustic wave along the length of the filter. The pattern also determines the reflective properties of the waveguide, which in turn determines the operating frequency range of the filter.

Application field

The B39171B3881Z710V3 SAW filter is primarily used in cellular phones and other communication systems. It can be used to reject interference signals and improve reception quality in areas with weak signal strength. The filter is also used in GPS systems to reject interference signals from stray signals in the environment. Additionally, the filter is useful in radar systems to improve accuracy and reliability of the device.

The filter is also used in infrared systems to improve the accuracy and range of the infrared receivers. The use of the filter can also reduce the amount of noise generated by the infrared system which improves its signal reception and processing capability.

The B39171B3881Z710V3 SAW filter can also be used to reduce false alarms and interference in wireless alarm systems. The filter is able to discriminate between the signals from the wireless alarm system and other spurious signals which can trigger a false alarm. This can significantly improve the accuracy and reliability of the system.

Conclusion

The B39171B3881Z710V3 SAW filter is a surface acoustic filter with relatively high resonance frequency and good quality. It can be used in cellular phones, GPS systems, radar systems and infrared systems to improve reception quality and accuracy. The filter is also useful in reducing false alarms and interference in wireless alarm systems. All in all, the B39171B3881Z710V3 SAW filter is a useful and versatile filter that can be used in a wide range of communication systems.