PEMI1QFN/RK,315

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EMI/RFI Filters (LC, RC Networks) are used for attenuating electromagnetic interference (EMI) and radio-frequency interference (RFI). This article will discuss the application field and working principle of PEMI1QFN/RK,315.

Application Field: PEMI1QFN/RK,315 is a compact EMI filter designed and built to attenuate EMI radiated from high speed digital circuits. This EM filter is ideal for applications with limited space, such as cellular phones, laptop computers and other mobile electronic devices. It also has excellent environment sealing characteristics, and is suitable for outdoor applications such as radio and navigation systems that are highly sensitive to electromagnetic interference.

Working Principle: PEMI1QFN/RK,315 is built using LC and RC filters. It uses two input capacitor-resistor networks to block high frequency noise, while allowing the desired low-frequency signal to pass. The signal is then passed through the inductor-resistor networks where the inductor filters out noise at higher frequencies, while the resistor reduces the interference at lower frequencies. The filter then amplifies the signal to counteract the attenuation created by the capacitor-resistor networks. This reduces the level of EMI while maintaining the desired low-frequency signal. All of these components work together to ensure that the EM filter can achieve its desired results.

In conclusion, EMI/RFI Filters (LC, RC Networks) are important components for reducing interference between circuits. PEMI1QFN/RK,315 is a compact EMI filter designed specifically for mobile electronic devices. It uses two input capacitor-resistor networks to block high frequency noise, while allowing the desired low-frequency signal to pass. It then amplifies the signal to counteract the attenuation created by the capacitor-resistor networks. This reduces the level of EMI while maintaining the desired low-frequency signal.

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