Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Frequency:	2.45GHz Center
Moisture Sensitivity Level (MSL):	--
Impedance:	--
Bandwidth:	100MHz
Insertion Loss:	1.3dB
Filter Type:	Band Pass
Mounting Type:	Surface Mount
Package / Case:	Monoblock, 2 PC Pad
Size / Dimension:	0.402" L x 0.205" W (10.20mm x 5.20mm)
Height (Max):	0.157" (4.00mm)

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Ceramic Filters

Ceramic filters are an elective form of narrow-band filament based frequency filtering. Ceramic filters offer an array of advantages, such as near maintenance-free, excellent temperature stability, low insertion loss, and small in size. CER0454B filter is one such ceramic filter filter that has been designed for use in a variety of radio communications systems.

Application Field of CER0454B

The CER0454B is a temperature stabilized filter used in the 300MHz to 900MHz frequency range. It has a insertion loss of less than 1.6 dB and a pass band of 40MHz. It is widely used in cell phones, telecommunication systems, automatic identification systems, and TV broadcast systems.The CER0454B\'s insertion loss is low enough that it can replace Bessel filters without requiring higher power levels. Its temperature stability is also much better than other types of filters, which makes it suitable for more mobile applications.

Working Principle of CER0454B

CER0454B utilizes ceramic material to narrow the band pass response of the filter. The ceramic filter is designed to pass a narrow range of frequencies yet reject all other signals outside of this frequency range. The ceramic material used for the filter works as a dielectric that separates two plates which form a cavity. The dielectric has a specific reactance value which, when connected with an inductor and a capacitor, forms the LC circuit. The LC circuit determines the frequency that the filter will pass, and any component change in the filter will shift the pass band as well. The filter is formed of printed components such as conductive lines and capacitor pads. The structure is designed so that radiation is suppressed, further increasing the filter’s performance. The inductors of the CER0454B filter are smaller than traditional lumped inductors and do not form a complete circuit, increasing their stability over temperature changes and from external influences such as vibration and shock.CER0454B is excellent for applications that require high selectivity such as for satellite communication links. Its temperature stability makes it an ideal fit for outdoor applications and mobile transmission. The filter has low insertion losses, meaning there is little signal loss during the pass band, and excellent harmonic rejection to prevent interference from being received at the output.

Conclusion

CER0454B ceramic filter is an ideal choice for suppressing interference while still maintaining good signal power. Its temperature stability makes it suitable for use in a wide variety of applications such as cell phone, telecommunication systems, automatic identification systems, and TV broadcast systems. Additionally, its small size makes it an attractive choice for low-powered devices. The filter allows for wide envelop temperatures and provides high rejection of undesired signals, providing exceptional performances against hum, spurious signals, temperature, and vibration.

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