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Common Mode Chokes

Common Mode Chokes (CMCs) are used in varying applications in order to filter out common mode noise from high-frequency signals. The DKIP-0329-20D6 CMC is an example of a specialized type of CMC designed for high-impedance applications.

Application Field of DKIP-0329-20D6

The DKIP-0329-20D6 Common Mode Choke is designed for applications where high common-mode noise impedances are present. The device features a high impedance from 1kHz to 1GHz (50Ω to 400KΩ) and is designed to operate in the frequency range from 1kHz to 10GHz. The device is intended to be used in applications such as telecommunications, vibration sensitive applications, and any application where common-mode noise is present in the signal.

Working Principle of DKIP-0329-20D6

The DKIP-0329-20D6 Common Mode Choke operates on the principle of self-resonance. Self-resonance is a form of oscillatory behavior of an inductor in the presence of an interfering signal. When an interfering signal is present, the inductor will start to oscillate at its self-resonant frequency. The DKIP-0329-20D6 CMC is designed to have a resonance frequency of 10GHz. At this frequency, the inductor acts as a filter, attenuating common mode noise. As the interference frequency moves away from 10GHz, the attenuation decrease, thereby allowing lower frequencies to pass through the inductor.

The DKIP-0329-20D6 CMC also utilizes an interconnected pair of strips that are inside the core of the inductor. This arrangement acts like a transformer, allowing for a physical separation of the noise from the signal. The arrangement also helps limit the amount of signal that can pass through the device, thus reducing the amount of interference.

Conclusion

The DKIP-0329-20D6 CMC is an example of a specialized type of common mode choke that is designed for high-impedance applications. The device utilizes the principle of self-resonance in order to filter out common mode noise and is intended for use in applications where high common-mode noise impedances are present. The device also utilizes an interconnected pair of strips in order to provide a physical separation of the noise from the signal.

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