Sunday, 6 January 2019

Are all antennas traveling wave antennas?


I've been reading a lot about traveling and standing waves, and I am right now reading about traveling wave antennas, to my understanding ALL antennas should be traveling wave antennas, but this is not the case of what i read online, and there is also not too much information about it.



For instance, the Wikipedia article states that the most common type of traveling wave antenna are the beverage and rhombic antenna.


I can't find much information about this, care to explain to me why? Is it because the propagation pattern of the wave has to meet some standards in order to be in the traveling wave category? Or are all antennas(like the ones in the microwave dishes and all others used in transmission and reception) really traveling wave antennas as i believe? and so are all waves(talking about radio waves in this case) that propagate traveling waves? Does modulation play any role here?




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