Unlike the above antennas, traveling wave antennas are nonresonant so they have inherently broad bandwidth. They are typically wire antennas multiple wavelengths long, through which the voltage and current waves travel in one direction, instead of bouncing back and forth to form standing waves as in resonant antennas. They have linear polarization (except for the helical antenna). Unidirectional traveling wave antennas are terminated by a resistor at one end equal to the antenna's characteristic resistance, to absorb the waves from one direction. This makes them inefficient as transmitting antennas. COUNT 5
QSN1 What antenna's are nonresonant? ANS1 traveling wave antennas QSN2 How long are the wire antenna's that the voltage and current waves travel in the same direction? ANS2 one direction QSN3 What are undirectional traveling wave directions terminated by? ANS3 resistor QSN4 What antenna does not have linear polarization? ANS4 helical antenna QSN5 What is the resistor equal to? ANS5 antenna's characteristic resistance