ECE :: Communication Systems
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One of the advantages of base modulation over collector modulation in a class C transistor amplifier is
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In an AM transmitter after the modulation stage, class C amplifier
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The maximum number of AM broadcast stations that can be accommodated in a 100 kHz bandwidth for the highest modulating frequency of 5 kHz will be
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For a short dipole having an effective length less than half the wavelength the radiation resistance is
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In a low level amplitude modulated system, the amplifier modulated stage must be
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A noise can be represented as superposition of spectral components. When this noise is passed through a narrow band filter, the output of filter should look like
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The upper and lower side frequencies for 3 kHz audio modulation with a 27 MHz carrier frequency will be
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Consider the following advantages of phase array radar
- simple circuitry
- ability to track and scan simultaneously
- ability to track many targets together
- very fast scanning
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