For lobe width, the following description is correct (Select 3 Answers).
A . In the main lobe range, the power density decreases by half (3dB) relative to the maximum radiation direction.
B . The narrower the lobes, the better the directionality, the farther the radiation distance, the stronger the anti-interference ability
C . The pattern usually has two or more petals
D . The terminal can receive the signal only within the half power angle coverage.
Answer: A B C