CER0787B

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Ceramic Filters are known for their ability to filter out electromagnetic frequencies, allowing only the desired frequencies to pass through while providing high levels of impedance. The CER0787B is a ceramic filter from EPCOS that is designed to filter out unwanted noise and other interferences in a relatively wide band of frequencies. This filter is made with a conductive ceramic material, which makes it ideal for applications in cellphones, wireless microphones, and other communication systems.

The CER0787B ceramic filter consists of two resonators connected in a parallel configuration to form a band-stop filter. The two resonators have a different frequency response: one is pass-band and the other one is reject band. The centre frequency of the filter is located between the two resonators. The pass-band of the filter is within the stop-band of one of the resonators, while the reject-band is within the stop-band of the other resonator. This unique design allows the filter to reject unwanted frequencies while allowing desired frequencies to pass through.

The design of the CER0787B ceramic filter is optimized for use in cellular and other communication systems. The centre frequency is between 800 and 850 MHz, making it ideal for GSM and CDMA applications. It also has a wideband -3 dB of 99 MHz, which ensures a large out-of-band attenuation. Furthermore, its pass-band and reject-band attenuation levels are low, which helps to minimize signal distortion and signal losses.

In addition, the CER0787B ceramic filter provides high impedance, which helps to reduce inductive noise. This is important for applications where noise is a major concern. Furthermore, the ceramic filter has a very low parasitic intermodulation, which helps to ensure a high-quality signal in the presence of background noise.

The CER0787B ceramic filter is designed to perform in both mobile and fixed environments. It is also highly temperature-stable, making it suitable for use in a variety of harsh environments. Furthermore, the filter is designed to meet RoHS compliance and has a guaranteed maximum tolerance of 2% over its operating temperature range.

The CER0787B ceramic filter offers a reliable and cost-effective solution for applications such as GSM and CDMA phones and wireless microphones. It is designed to be robust and temperature-stable, making it ideal for use in harsh environments. The filter can reject a wide range of unwanted frequencies, while providing excellent performance and low signal distortion. By offering good out-of-band and in-band rejection and high impedance, the CER0787B ceramic filter is an ideal choice for filtering out electromagnetic frequencies.

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