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A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%, determine the following:
(a) Physical area of the reflector (in m2 ).
(b) Maximum effective area of the antenna (in m2 ).
(c) Maximum directivity (dimensionless and in dB).
(d) Maximum power (in watts) that can be delivered to the TV if the power density of the wave incident upon the antenna is 10 ?
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find an s-domain transfer function that has a specified frequency response and answer and discuss the following questions: 1. What determines the "order" of a transfer function 2. Given a transfer function, how is its frequency response calculated
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A time varying capacitor is characterized by the charge- voltage equation q(t) = C(t)v(t)
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Assuming no feedback to the adversary until each attempt has been completed, what is the expected time to discover the correct password?
We need to use asynchronous TDM and combine 50 digital sources. On average only 20% of the sources are active at any time. Each output slot carries 18 bits of data from each digital source. Also 8 extra bits are added to each frame for synchroniza..
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