Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
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The document discusses two radio wave sources emitting waves in all directions and examines the possibility of broadcasting a signal only in the east (e) direction while blocking the west (w). It concludes that due to identical emissions and destructive interference, it is not possible to achieve this solely through arrangement, as interference occurs equally in both directions. The only viable solutions are to shield the west direction or use reflectors to redirect the signal back to the east.
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Two sources of radio waves (call them 1 and 2) are separated by a dis.pdf
- 1. Two sources of radio waves (call them 1 and 2) are separated by a distance d along the a-axis in the plane, and emit sinusoidal waves of the same wavelength A and frequency f in the N (+y), S (-y), E (+x), and W (-x) directions. Suppose that we want to arrange the sources to broadcast a signal in the E direction, but not the W. Can this be accomplished? If so, how? In not, why? Solution both the sources are identicle and emit in all direction N,S,E,W. by introducing a path difference equal to half wave length the waves will have distructive interference and signal is destroyed but this happens in both the direction E nd W equally. Hence it is not possible to arrnge the sources such that we have signal only in E nd not in W, the only way to achieve this is to shield the source in W direction or put reflectors in W direction so that all W signal is reflected back to E