![]() ![]() In an antenna, radiation is the goal.Ī transmission line is a sub-category of waveguides that uses some physical configuration of metal and/or dielectrics to direct a signal along the desired path. The chief difference between the two is that a waveguide confines the electromagnetic field to an area along the path, while an antenna radiates the electromagnetic field into space. ![]() Microwave signals are transmitted from location-to-location by waveguides or antennas. This article describes some useful transmission lines and the problems they solve. Having a variety of transmission lines in your tool kit can get you out of trouble in tricky situations. The most commonly used transmission lines (stripline and microstrip line) aren't the only way to transmit a signal from one place to another. By controlling the impedance and electrical length we can easily predict its behavior in a circuit. At these frequencies, controlled impedance transmission lines are used to move signals around a printed circuit board. microwave) the physical dimensions of printed circuit board (PCB) traces become significant relative to the wavelength of the signal.
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