# RF và mạch lạc lò vi sóng P5

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## RF và mạch lạc lò vi sóng P5

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IMPEDANCE MATCHING NETWORKS One of the most critical requirements in the design of high-frequency electronic circuits is that the maximum possible signal energy is transferred at each point. In other words, the signal should propagate in a forward direction with a negligible echo (ideally, zero). Echo signal not only reduces the power available but also deteriorates the signal quality due to the presence of multiple re¯ections. As noted in the preceding chapter, impedance can be transformed to a new value by adjusting the turn ratio of a transformer that couples it with the circuit. However, it has several limitations....

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