Base station antenna and base station antenna feed network

摘要

Embodiments of the present invention relate to the field of communications technologies, and provide a base station antenna and a base station antenna feed network. The base station antenna includes a transceiver array, a first-level vector synthesis network, a second-level phase shifter array, a second-level vector synthesis network, and an antenna unit array. By using the second-level vector synthesis network, the base station antenna makes phase differences between multiple vector signals sent to antenna units smoother, thereby extending an adjustable range of a downtilt on the premise that the number of transceivers is as small as possible.

主权项

1. A base station antenna, comprising a transceiver (TRX) array, a first-level vector synthesis network, a second-level phase shifter array, a second-level vector synthesis network, and an antenna unit array, wherein:
the TRX array comprises N TRXs, which are configured to output N vector signals, wherein N is a natural number greater than or equal to 2; the first-level vector synthesis network is configured to implement vector synthesis for the N vector signals to generate M vector signals, wherein M is a natural number and M is greater than N; the second-level phase shifter array is configured to receive the M vector signals output by the first-level vector synthesis network, change phases of the M vector signals, and output M phase-shifted vector signals, wherein phase shift amounts of the M vector signals after passing through the second-level phase shifter array are an arithmetic progression; the second-level vector synthesis network is configured to receive the M phase-shifted vector signals, divide the M vector signals into P vector signals, implement vector synthesis for Q vector signals in the P vector signals and output Q synthesized vector signals, and directly output a vector signal except the Q vector signals in the P vector signals, wherein P is a natural number and P is greater than M, and Q is a natural number and less than or equal to P; and the antenna unit array is configured to receive the P vector signals output by the second-level vector synthesis network and convert the P vector signals into electromagnetic waves for radiating.