electromagnetic interference

What Blocks Satellite Signal: Understanding Common Interference Factors

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Introduction to Satellite Signal Interference Satellite signal transmission is a critical aspect of modern communication, providing services ranging from television broadcasts to global positioning systems (GPS) and internet connectivity. These signals travel from satellites orbiting the Earth to ground-based receivers, such as satellite dishes, which decode the transmitted information. For this process to function efficiently, …

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Why is the Local Oscillator Frequency Always Higher than the Signal Frequency?

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Introduction to Local Oscillator and Signal Frequency A local oscillator (LO) is a critical component in communication systems, serving as a stable frequency source that aids in the process of frequency conversion. Its primary role is to generate a signal that, when mixed with an incoming signal, produces new frequencies—specifically, the sum and difference of …

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AC/DC Switching Power Supply With Anti-EMI Filter

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AC/DC switching power supplies are integral components in modern electronic devices. Their primary function is to convert the alternating current (AC) from the mains into direct current (DC) that is suitable for powering electronic circuits. This conversion process is crucial for the functionality of a wide range of devices, from household appliances to sophisticated industrial …

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