| 摘要 |
A method of calibrating transmit and/or receive paths of an antenna comprising at least two antenna columns, each of which comprising two co-located sub-arrays of antenna elements. The method includes the steps of transmitting a measurement signal on at least one of the antenna elements, and receiving a representation of the measurement signal on at least one other of the antenna elements, the representation comprising at least a mutual coupling component dependent on the mutual coupling between the at least one antenna element and the at least one other antenna element. Further, the method includes the steps of repeating the transmitting and receiving step for at least a subset of all combinations of antenna elements of the antenna, wherein each combination of antenna elements comprises antenna elements having a same or different polarization, and subsequently comparing the received representations of the measurement signal between different combinations of antenna elements, and estimating at least a respective phase difference between antenna elements with the same polarization based on the comparison. Finally, the method includes the step of calibrating transmit and/or receive paths of antenna elements with the same polarization based on the estimated phase difference. |
