| 摘要 |
An antenna system having n antenna sub-systems, each sub-system having a transceiver configured to a corresponding antenna element. Each transceiver has a transmit path, a receive path, a duplexer configured to interconnect the transmit and receive paths with the antenna element. Switch circuitry in the transceiver enables the sub-system to be configured in either (i) a normal operating mode in which an incoming signal from the antenna element is processed by the receive path to recover incoming data or (ii) a local transmitter monitoring mode in which the outgoing signal generated by the transmit path is tapped and fed to the receive path to characterize and possibly adjust the operations of the transmit path. In one embodiment, the switch circuitry enables outgoing signals from other antenna elements to be applied to the local receive path to support an external antenna monitoring mode. |
