This set of Antennas Multiple Choice Questions & Answers (MCQs) focuses on “Spectrum Analyzer”.
1. Spectrum Analyzer is time domain instrument.
Explanation: Spectrum analyzer is a frequency domain instrument. It gives the plot of signal amplitude versus the frequency. The amplitude is the Fourier transform of the signal. It acts as a diagnostic tool for the RF and EMI measurements.
2. Which of the following instrument measures the amplitude and phase of the signal?
a) Network analyzer
b) Spectrum analyzer
Explanation: Network analyzer is used to measure the amplitude of signal and phase over a frequency. Spectrum analyzer which is a frequency domain instrument gives the plot of signal amplitude versus the frequency. Oscilloscope is a time domain instrument. Klystron acts as a source for the microwave signal.
3. Which of the following is not present in the spectrum analyzer?
a) Swept local Oscillator
b) RF amplifier
c) Sweep voltage generator
d) Slotted line
Explanation: The slotted line is not used in the spectrum analyzer. Spectrum analyzer is a frequency domain instrument. It gives the plot of signal amplitude versus the frequency.
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