E9A01 : What is an isotropic radiator?
A
A calibrated, unidirectional antenna used to make precise antenna gain measurements
B
An omnidirectional, horizontally polarized, precisely calibrated antenna used to make field measurements of antenna gain
C
A hypothetical, lossless antenna having equal radiation intensity in all directions used as a reference for antenna gain
D
A spacecraft antenna used to direct signals toward Earth
Correct Answer: A hypothetical, lossless antenna having equal radiation intensity in all directions used as a reference for antenna gain