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Electronics and Communication Communication Systems Difficulty: Medium

The surface wave eventually disappears as one moves away from the transmitter because of

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In the figure, assume that the forward voltage drops of the PN diode D 1 and Schottky diode D 2 are 0.7 V and 0.3 V, respectively. If ON denotes conducting state of the diode and OFF denotes non-conducting state of the diode, then in the circuit, Consider the differential equation $${{dx} \over {dt}} = 10 - 0.2x$$ with initial conduction x(0) = 1. The response x(t) for t > 0 is Optical carrier frequency is in the range of Poisson's equation for inhomogeneous medium is: Which one of the following characteristic equation of result in the stable operation of the feedback system?