Question
Which of the following can be measured with an antenna analyzer?
Answer Options
- A) Velocity factor
- B) Cable length
- C) Resonant frequency of a tuned circuit
- D) All these choices are correct
Correct Answer: D
Explanation
An antenna analyzer is a versatile tool for analyzing transmission lines and resonant circuits, not just antennas. Since it measures complex impedance (Resistance and Reactance) across a wide range of frequencies, it can be used to derive several key parameters that govern how RF travels through a system.
It can measure the resonant frequency of a tuned circuit (where reactance is zero), and by measuring the impedance variations across a length of coaxial cable, it can calculate the cable length and velocity factor of the cable (using the input impedance variations as a function of frequency). Therefore, all these choices are correct as functions measurable or derivable using a modern antenna analyzer.
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