FAR-F5KY-881M50-B4UZ-Z

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SAW Filters, short for surface acoustic wave filters, are electronic devices designed to filter out unwanted signals in a communication system.

FAR-F5KY-881M50-B4UZ-Z is one of the many types of SAW Filters available. It is a single-channel, low-frequency SAW filter with a center frequency of 880MHz. It has a small form factor and is suitable for handheld and PDA applications. The filter’s passband range is 3-11 MHz, with a stopband frequency range of 800-900 MHz. The passband insertion loss is less than 0.5 dB.

SAW filters like the FAR-F5KY-881M50-B4UZ-Z are used in communication systems to remove unwanted signals from the communication channel. They are typically used in cellular phone communication systems, television broadcasting systems, radio receivers, and radar applications. SAW filters can provide a filter function that is more selective, more stable, and more cost-effective than other filter technologies such as Sallen-Key filters.

The working principle of SAW filters is based on the propagation of acoustic energy across a piezoelectric substrate. A piezoelectric substrate is one which has the ability to convert energy from one form (chemical, electrical, etc.) to another. In the case of SAW filters, the energy is converted from electrical energy to acoustic energy and vice versa.

When an electrical energy signal is applied to a piece of piezoelectric material, it will vibrate or “ring” at a specific frequency. This vibration is referred to as a Rayleigh wave. As the wave passes across the substrate, it experiences interference from other waves which have already been reflected from the surface of the substrate. Depending on the geometry of the substrate, these interferences will cause the wave to either be transmitted or reflected. This is how the SAW filter works.

The geometry of the substrate is specifically designed to allow certain frequencies to be transmitted while others are reflected. The frequency of the wave that is transmitted is called the passband frequency. All other frequencies, including those below and above the passband frequency, will be reflected, thus forming an effective filter.

SAW filters like the FAR-F5KY-881M50-B4UZ-Z are used in a variety of applications, from cellular phone communication systems, to television broadcasting systems, radio receivers, and radar applications. They are typically small, inexpensive, and offer a high degree of stability.

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