Microwave Communication The maximum usable range of the usual radar set (on any particular range setting) is determined by The duty cycle The interval between transmitted pulses The bandwidth of the receiver IF stages The width of the transmitted pulses The duty cycle The interval between transmitted pulses The bandwidth of the receiver IF stages The width of the transmitted pulses ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication Rainfall is an important factor for fading of radio waves at frequencies above 100 GHz 100 MHz 1 GHz 10 GHz 100 GHz 100 MHz 1 GHz 10 GHz ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication To achieve good bearing resolution when using a pulsed-radar set, an important requirement is A narrow, antenna-beam width in the horizontal plane A high duty cycle A low repetition rate A narrow, antenna-beam width in the vertical plane A narrow, antenna-beam width in the horizontal plane A high duty cycle A low repetition rate A narrow, antenna-beam width in the vertical plane ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:where R = effective earth radius (m) and L = path length (m) S = λR/RL S = 3λR/L S = λR/L S = 2λR/L S = λR/RL S = 3λR/L S = λR/L S = 2λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication In a pulsed radar set, the STC circuit is used to Improve the target bearing resolution Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return Improve the target bearing resolution Increases receiver sensitivity for echoes from targets Vary the pulse frequency in order to control the maximum target Reduce interference from the effects of sea return ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The Gunn diode oscillator Generates frequencies which are below 100 MHz Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt Operates over a positive resistance characteristic Generates frequencies which are below 100 MHz Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt Operates over a positive resistance characteristic ANSWER DOWNLOAD EXAMIANS APP
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