Antenna Measurements Questions and Answers – Spectrum Analyzer

This set of Antennas Multiple Choice Questions & Answers (MCQs) focuses on “Spectrum Analyzer”.

1. Spectrum Analyzer is time domain instrument.
a) True
b) False
View Answer

Answer: b
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
c) Oscilloscope
d) Klystron
View Answer

Answer: a
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
View Answer

Answer: d
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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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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