What can be added to reduce signal ambiguity in a loop antenna?(a) Low noise amplifier(b) Amplifiers(c) Sense antenna(d) Increase the antenna sizeI got this question during a job interview.The above asked question is from Point Source Radio Systems topic in portion Terrestrial Radio Navigation System of Avionics

What can be added to reduce signal ambiguity in a loop antenna?(a) Low

1.	What can be added to reduce signal ambiguity in a loop antenna?(a) Low noise amplifier(b) Amplifiers(c) Sense antenna(d) Increase the antenna sizeI got this question during a job interview.The above asked question is from Point Source Radio Systems topic in portion Terrestrial Radio Navigation System of Avionics
Answer» Right choice is (c) Sense antenna To explain: The HORIZONTAL pattern of the loop antenna is a figure of eight which has TWO null POSITIONS 180° apart. This ambiguity will cause the system to give the same indication whether it is pointing toward a station or AWAY from it. A sense antenna can be added when the signal ambiguity MUST be resolved.

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