| 摘要 |
A wireless antenna system (20) for a terminal comprises an antenna structure (25) and frontend ports (31, 32) for connecting to transmit and/or receive circuitry (11, 12A, 12B) of the terminal. Circuitry (30) is arranged to connect the antenna structure to the feed ports. The antenna system is operable in a first radiation mode and a second radiation mode, wherein the modes are orthogonal. The circuitry is arranged to map the first feed port to the antenna structure for the first radiation mode across a first frequency band having a bandwidth which covers one of an uplink frequency band and a downlink frequency band of the transmit/receive circuitry. The circuitry is arranged to map the second feed port to the antenna structure for the second radiation mode across a second frequency band, wherein the second frequency band covers both of an uplink frequency band of the transmit/receive circuitry and a downlink frequency band of the transmit/receive circuitry. The above concepts are extendible to more than two modes. |
