Radar Tester Question:

Given below are 6 major parts of a RADAR System:

☛ A Transmitter: It can be a power amplifier like a Klystron, Travelling Wave Tube or a power Oscillator like a Magnetron. The signal is first generated using a waveform generator and then amplified in the power amplifier.
☛ Waveguides: The waveguides are transmission lines for transmission of the RADAR signals.
☛ Antenna: The antenna used can be a parabolic reflector, planar arrays or electronically steered phased arrays.
☛ Duplexer: A duplexer allows the antenna to be used as a transmitter or a receiver. It can be a gaseous device that would produce a short circuit at the input to the receiver when transmitter is working.
☛ Receiver: It can be super heterodyne receiver or any other receiver which consists of a processor to process the signal and detect it.
☛ Threshold Decision: The output of the receiver is compared with a threshold to detect the presence of any object. If the output is below any threshold, the presence of noise is assumed.