CER0525B

Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Impedance:	--
Moisture Sensitivity Level (MSL):	--
Bandwidth:	195MHz
Insertion Loss:	0.85dB
Filter Type:	Band Pass
Mounting Type:	Surface Mount
Package / Case:	Monoblock, 2 PC Pad
Height (Max):	0.264" (6.70mm)

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CER0525B Application Field and Working Principle

Ceramic Filters are widely used in many industries, providing a simple and cost-effective method of producing a filter with precise characteristics. The CER0525B is a symmetrical surface type ceramic filter that is used for frequency selection applications.

Application of CER0525B

The CER0525B has been designed to be used in a variety of communication and radio frequency systems. It can be used for both receive and transmit filtering, and is typically used in base stations, repeaters, and for mobile systems. It provides a very efficient filtering for high frequency, narrow band signals, with excellent selectivity. The insertion loss is low at the center frequency and increases rapidly at high frequencies. This type of filter is ideal for applications such as radio, electro-acoustic transducers, broadcast, television, satellite communications, radio navigation, communication systems, radar, and computer applications.

Working Principle of CER0525B

The special technology of CER0525B ceramic filters relies on the advanced technologies of dielectric ceramics and high frequency intermittence pieces. This filter utilizes the fact that ceramic resonator can oscillate only near its resonance frequency. It produces re-radiated field with special amplitude and phase angle that brings the band selection.CER0525B combines wire bonding, ceramic substrate, and conductive stony material together. Its internal structure consists of dielectric and magnetic materials, providing high frequency selection and high symmetrical performance. Its resonators are placed in a distributed resonant array utilizing a combination of Cavity Resonator and a Symmetric arrangement of micro-strip resonators. The micro-strip resonators, which form the distributed resonator arrays, are designed so that each one captures the frequency bellow and above the selected frequency. Then, the output is symmetrically recombined in the way of the multiplied distribution, the desired frequency is selected, and signals outside of the band are suppressed. This filter also incorporates unique inter-digital filter structures utilizing two-wire line as a signal output port. The output port of the filter is connected to a specially designed two-wire line, reducing the output port impedance, suppressing reflections, and reducing the effects of parasitic radiation.

Conclusion

The CER0525B is one of the most popular ceramic filter designs. It is comprised of a series of distributed resonator arrays, and is capable of producing a very efficient filtering for narrow band signals. The filter has a low insertion loss at the center frequency, and provides excellent selectivity. It is suitable for many types of communication and radio frequency applications, as well as many other applications such as broadcast, television, satellite communication, and radar. The working principle behind the CER0525B relies on the advanced technologies of dielectric ceramics and high frequency intermittence pieces. Its structure combines wire bonding, ceramic substrate, reactive stony material, and utilizes a combination of Cavity Resonator and micro-strip resonators.

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