CBPFS-1960

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Surface Acoustic Wave (SAW) filters are electronic components based on the physical phenomenon of surface wave propagation. One such filter type is the CBPFS-1960, designed to remove unwanted frequency components from the desired signal. In this article, we will explore the applications and working principles of the CBPFS-1960.

The CBPFS-1960 is a multi-mode filter that utilizes a quartz substrate material and two inter-digital transducers (IDTs). It is designed to filter out signals in the range of 150 kHz - 10 MHz, with a passband between 160 kHz and 9.6 MHz. It has an insertion loss of approximately 1.2 dB, and a maximum rejection of up to 80 dB. It also has high ripple characteristics and large channel capacitance, making it an ideal filter for applications where low-ripple rejection, high-passband transition, and large stopbands need to be maintained.

The working principle of the CBPFS-1960 is simple. The filter is placed between two IDTs, which transmit an acoustic wave across the surface of the quartz substrate. This acoustic wave is then modulated by the signal that needs to be filtered. The modulated acoustic wave travels across the surface of the quartz, and is then picked up on the other side by another IDT. This IDT then amplifies the signal before it is sent to the output. By controlling the geometry of the IDTs, and by adjusting the voltages applied to them, the frequency components of the acoustic wave that reach the output can be selected. This allows for the filtering of specific frequencies from the signal.

The CBPFS-1960 is a versatile filter, and is used in a variety of applications. It is well suited for audio and communications applications, where high frequency components in the signal need to be removed. It is also used for RF signals, such as for mobile phones or GPS, as well as for precision instrumentation applications. The filter can also be used in medical imaging systems to reduce the amount of noise present in the system.

Due to its robust design and high frequency performance, the CBPFS-1960 has become increasingly popular among engineers, and for good reason. Its low loss characteristics, wide passband, and high rejection make it an ideal choice for applications where frequency components need to be filtered from the signal. With its ease of use and simple principles of operation, the CBPFS-1960 has become an invaluable tool in the design and production of electronic equipment.

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