B39202B4173U410

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Surface Acoustic Wave (SAW) filters are a specialized type of filter technology used for signal processing. They are highly integrated, small in size, and operate with high selectivity and low insertion loss. The B39202B4173U410 is a typical SAW filter and is used in a variety of applications. This article will discuss the application field and working principle of the B39202B4173U410 filter.

The B39202B4173U410 SAW filter is designed for use in cellular telephone repeaters and mobile phones. It is a narrow band pass filter with high selectivity, which allows signals originating from a specific frequency area to be accurately selected without interference from other frequencies. Its low insertion loss ensures that the signals are kept intact during signal processing. In addition to cellular telephone repeaters and mobile phones, the B39202B4173U410 can also be used in CATV, satellite, and wireless communication systems.

A SAW filter is a passive element consisting of a piezoelectric substrate, typically quartz having a surface covered by an interdigital transducer pattern and metal reflectors. The interdigital transducers consist of series of metal electrodes placed on the quartz surface. Electromechanical energy is generated by the electrodes when a voltage is applied, producing a wave traveling along the surface of the substrate. The generated wave is then reflected by the metal reflectors and is converted back to an electrical signal. This conversion allows the filter to detect the specific frequency range specified by the design and to reject other frequencies.

The B39202B4173U410 SAW filter employs the above described design, but also uses a combination of a parallel-fed Mach-Zehnder interferometer and a circular transducer. This combination provides a linear frequency response, low group delay, and excellent phase characteristics over a wide frequency range. The filter also features built-in temperature compensation, which compensates for temperature-related changes in the filter’s resonance frequency.

In conclusion, the B39202B4173U410 SAW filter is designed for use in cellular telephone repeaters and mobile phones, as well as CATV, satellite, and wireless communication systems. It provides highly integrated, small-size signal processing, with excellent frequency selectivity and low insertion loss. Its combination of a parallel-fed Mach-Zehnder interferometer and circular transducer is perfect for applications requiring a wide frequency range, low group delay, and excellent phase characteristics. Built-in temperature compensation ensures that the filter remains stable over a wide temperature range.

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