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Neets Module 10-Introduction to Wave Propagation, Transmission Lines, and Antennas
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3-52 CHARACTERISTIC IMPEDANCE, Z0, is the ratio of E to I at every point along the line. For maximum transfer of electrical power, the characteristic impedance and load impedance must be matched. The VELOCITY at which a wave travels over a given length of transmission line can be found by using the formula: A transmission line that is not terminated in its characteristic impedance is said to be FINITE. When dc is applied to an OPEN-ENDED line, the voltage is reflected back from the open end without any change in polarity, amplitude, or shape. Current is reflected back with the same amplitude and shape but with opposite polarity.






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