Multi-beam lens antenna and active lens antenna system

A multi-beam lens antenna, characterized in that the multi-beam lens antenna comprises a columnar lens, N layers of first radiation unit group and M layers of second radiation unit group both distributed in a height direction of an outer side surface of the columnar lens;

• each layer of first radiation unit group comprises P first radiation units arranged in an array on the outer side surface of the columnar lens, and each layer second radiation unit group comprises K second radiation units arranged in an array on the outer side surface of the columnar lens;
• each layer of first radiation unit radiates P narrow beams with different directions as service beams through the columnar lens, and each layer of second radiation unit radiates F wide beams with different directions as broadcast beams through the columnar lens;
• and a sector covered by the F broadcast beams of each layer matches a sector covered by the P service beams of each layer, wherein N≥2, P≥2, M≥1, K≥1, 1≤F≤K.