AFS14A35-1902.00-T2 Filters

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Surface acoustic wave (SAW) filters are vital components in signal processing for telecommunication infrastructure. Owing to their small size, good temperature stability and high selectivity, these filters are commonly used for the implementation of high frequency parametric amplifiers and receivers. Among the variety of SAW filters, AFS14A35-1902.00-T2 is one of the most popular and versatile devices.

Application Field

The AFS14A35-1902.00-T2 is a surface acoustic wave filter that is generally used in mobile communication systems such as GSM, UMTS and LTE. The device offers excellent performance in terms of stopband and passband characteristics. Specifically, it can operate over a frequency range of 1.7- 2.2GHz, providing very low passband insertion loss, good stopband rejection, wide IF bandwidth and fast transient response.

In addition, the AFS14A35-1902.00-T2 is also a perfect choice for other applications such as a 5G mobile communication system, WiFi, and Bluetooth as well as industrial, medical and military applications.

Working Principle

The working principle behind SAW filters is based on the dispersion of surface acoustic waves (SAWs) along the grating of the device. When an incident wave enters the device, it splits into two components, namely a longitudinal component propagating along the surface of the grating and a transverse component propagating perpendicular to the plane of the material. The longitudinal component is reflected and scattered by the grating pattern, while the transverse components are absorbed by the material. The reflected waves are then recombined to create a filter response.

In SAW filters, the frequency response characteristics are determined by the physical design of the grating. For instance, making certain parts of the grating thicker can result in a higher reflection coefficient at those frequencies, while thinner parts of the grating may have a lower reflection coefficient. This design also enables SAW filter designers to create custom devices with specific characteristics for various applications.

The AFS14A35-1902.00-T2 SAW filter uses a high-Q interdigital transducer as the interdigital transducer (IDT). This IDT is made of two continuous electrodes, which is capable of generating intense longitudinal waves along the upper surface of the device. This unique design helps to reduce the passband insertion loss and improves the quality factor of the filter.

In conclusion, the AFS14A35-1902.00-T2 SAW filter is a great solution for many signal processing applications, due to its small size, good temperature stability and excellent selectivity. It is an ideal choice for a wide variety of applications, such as mobile communication systems, 5G networks, WiFi, Bluetooth, industrial, medical and military devices.

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