Antenna and base station

A base station, comprising a pole and an antenna fixed on the pole, wherein:

• the antenna comprises an antenna array and a first BUTLER network;
• the antenna array comprises multiple radiating elements vertically arranged on a vertical plane;
• the first BUTLER network has n input ports and m output ports, wherein m and n are natural numbers, n is greater than or equal to 2, m is greater than or equal to 3, and m is greater than n;
• the m output ports are respectively connected to at least one radiating element of the antenna array, and the radiating elements connected to the m output ports in the antenna array are vertically arranged on the vertical plane;
• and
• the first BUTLER network is configure to receive n sequence of signals through the n input ports, perform phase adjustment, output signals of n groups of phase distribution combination through the m output ports, each group of phase distribution combination includes m phases, each output port is configure to respectively output signals of one phase in each group of phase distribution combination, the multiple radiating elements connected to the m output ports are configure to radiate n beams, and the n beams are distributed at different angles on the vertical plane.

An method for forming beams by an antenna, the antenna comprises an antenna array and a first BUTLER network, the antenna array comprises multiple radiating elements arranged vertically;

• the first BUTLER network has n input ports and m output ports, wherein m and n are natural numbers, n is greater than or equal to 2, m is greater than or equal to 3, and m is greater than n;
• the m output ports are respectively connected to at least one radiating element of the antenna array, and the radiating elements connected to the m output ports in the antenna array are arranged on a vertical plane;
• and the method comprises:
• by the first BUTLER network, receiving n sequences of signals through the n input ports, performing phase adjustment, outputting signals of n groups of phase distribution combination through the m output ports, each group of phase distribution combination includes m phases, each output port respectively outputs signals of one phase in each group of phase distribution combination;
• by the multiple radiating elements connected to the m output ports, radiating n beams, and the n beams are distributed at different angles on the vertical plane.