Transmission line is a cable that transfer Electromagnetic wave from source to destination. Conventional electrical cables are adequate for carrying low frequency alternating current (AC), such as mains electricity, which reverses direction 100 to 120 times per second, and audio transmissions. however, Electrical cables cannot be utilized to carry radio wave flux over around 30 kHz since the energy starts to radiate off the cable as radio signals, resulting in power dissipation. Radio frequency currents also generally reflect from cable irregularities like connections and joints and flow back across the cable towards to source. Typically transmission lines are distinguished by having uniform cross sectional dimensions over entire length, resulting in a standard impedance, known as the characteristic impedance, to minimize reflections. Parallel lines (ladder lines, twisted pairs), coaxial cable, and planar transmission lines such as stripline and microstrip are exampl...
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