In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Объяснение

A small loop responds to the magnetic field threading it. A wave arriving along the loop axis, that is broadside to the loop plane, links no net flux, so the nulls lie broadside and the maxima lie in the plane of the loop, which is what makes small loops useful for direction finding.