How Are Plane Waves Affected By The Size and Electrical Properties of The Obstruction?
In general, the way in which a plane wave is affected by an obstruction depends on the size of the obstruction relative to its wavelength and the electrical properties of the obstruction. For example, a hot air balloon with multi-wavelength dimensions passing between the transmit and receive antennas could be a significant visual obstruction but is unlikely to affect the NLOS radio propagation much assuming it is constructed from fabric and full of hot air, both of which are good insulators. Conversely, a metal obstruction of dimensions comparable to a wavelength would cause significant reflections. When considering obstruction size we will assume its electrical properties are the most common intermediate or lossy type.
Read more about this topic: Non-line-of-sight Propagation
Famous quotes containing the words plane, waves, affected, size, electrical and/or properties:
“At the moment when a man openly makes known his difference of opinion from a well-known party leader, the whole world thinks that he must be angry with the latter. Sometimes, however, he is just on the point of ceasing to be angry with him. He ventures to put himself on the same plane as his opponent, and is free from the tortures of suppressed envy.”
—Friedrich Nietzsche (1844–1900)
“Yet
I trust the sanity of my vessel; and
if it sinks, it may well be in answer
to the reasoning of the eternal voices,
the waves which have kept me from reaching you.”
—Frank O’Hara (1926–1966)
“The English, besides being “good haters,” are dogged and downright, and have no salvos for their self-love. Their vanity does not heal the wounds made in their pride. The French, on the contrary, are soon reconciled to fate, and so enamoured of their own idea, that nothing can put them out of conceit with it. Whatever their attachment to their country, to liberty or glory, they are not so affected by the loss of these as to make any desperate effort or sacrifice to recover them.”
—William Hazlitt (1778–1830)
“O hideous little bat, the size of snot,
With polyhedral eye and shabby clothes,”
—Karl Shapiro (b. 1913)
“Few speeches which have produced an electrical effect on an audience can bear the colourless photography of a printed record.”
—Archibald Philip Primrose, 5th Earl Rosebery (1847–1929)
“The reason why men enter into society, is the preservation of their property; and the end why they choose and authorize a legislative, is, that there may be laws made, and rules set, as guards and fences to the properties of all the members of the society: to limit the power, and moderate the dominion, of every part and member of the society.”
—John Locke (1632–1704)