B39252B9429K610

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

SAW filters are a vital part of any signal processing system. Sprinkle or "surface acoustic wave" (SAW) filters are used to tune signals so that radio transmitters operate properly and radios can accurately receive desired signals. As with all signal processing, SAFF designs aim to minimize unwanted reflections while maintaining a high rejection rate of off-frequency signals. The B39252B9429K610 is a great example of a SAW filter and its working principles and application field will be discussed in this article.

Generally speaking, SAW filters are mechanical filters used to tune or select the frequency of radio signals. They are composed of a piezoelectric substrate, interdigital transducers (IDTs), additional masking layers, and an acoustic absorption layer. The piezoelectric substrate consists of a stiffer material such as quartz, aluminum or lithium niobate, that is composed of a material which exhibits the piezoelectric effect. The IDTs act as interconnects between electrical and acoustic energy. The IDTs are like dipoles, consisting of multiple finger pairs, interleaving in the substrate. The ratio of finger widths to the distance between the fingers directly affects the filter\'s passband frequency. The masking layers are used to minimize reflections on the substrate, and the acoustic absorption layer is used to reduce attenuation by absorbing acoustic energy from the filter.

The B39252B9429K610 is a SAW filter specifically designed with a center frequency of 594 MHz. It has a nominal bandwidth of 5 MHz and an associated insertion loss of 3.5 dB. This filter is capable of handling RF input levels up to 800 mW with an attenuation of at least 65 dB, ensuring good isolation between transmitted and received signals. The filter is also designed with linear phase characteristics, ensuring crisp signal transitions, which makes it suitable for selectivity applications. The input impedance is matched to 50 ohms, making it compatible with most standard RF circuits.

The B39252B9429K610 SAW filter\'s applications include GSM modem designs, wireless systems, cellular phone base stations, and satellite communications. It can be used for transmitters and receivers in radio systems, as it is designed to provide high selectivity for signals in the communication systems. It also offers high rejection of unwanted frequencies and is highly sensitive, thus making it suitable for applications such as television sets, hearing aids, and radio receivers.

The B39252B9429K610 SAW filter\'s working principle is relatively simple. When energy from an RF signal propagates through the piezoelectric substrate, IDTs act as a path for the signal to be coupled with the substrate\'s material. As the signal travels through the substrate, it interacts with the IDTs, causing it to reflect off some of the surface acoustic wave energy. As the signal continues to travel, it will come into contact with the acoustic absorption layer which absorbs the energy, dampening the original signal.

Another important aspect of the working principle is the frequency response of the filter. This is dependent on the shape of the IDT, the distance between the IDTs, the diameter of the IDT fingers, and the couplings between the IDTs. The frequency response of the filter is altered depending on the spacing and finger widths of the IDTs. These shapes and settings will determine the center frequency, upper and lower cut off frequencies, and the bandwidth of the filter.

In conclusion, the B39252B9429K610 SAW filter is a great example of a SAW filter, offering a high selectivity, low noise, wide frequency range, low insertion loss, and high rejection of off-frequency signals. It can be used for a wide variety of applications, such as GSM modems, wireless systems, cellular base stations, and satellite communications, and it is a useful tool for tuning signals in radio transmitters and receivers. The working principle of SAW filters is relatively simple and involves reflecting and absorbing coupled acoustic energy in the piezoelectric substrate.

The specific data is subject to PDF, and the above content is for reference