Antenna device and system having active modules

An antenna system comprising an antenna device, the antenna device comprising:

• an antenna array, configured to radiate and receive an electromagnetic wave signal;
• a feed network, configured to connect the antenna array and a signal multiplexer;
• at least one signal multiplexer, wherein each signal multiplexer, comprising a combiner port and at least two divider ports, is configured to divide one path of signal from the feed network into two paths of signal, or combine at least two paths of signal to one path of signal and transmit the one path of signal to the feed network;
• and
• at least two interface modules, wherein each of the interface modules, connected to an active module, is configured to receive a signal sent from the active module, and send a signal to the active module;
• and, wherein
• the divider ports of each signal multiplexer at least comprise a first port and a second port;
• and
• the interface modules at least comprise a first interface module and a second interface module, wherein
• the first port is connected to the first interface module and the second port is connected to the second interface module, facilitate:
• sending a signal output by the first port, through the first interface module, to the active module that is connected to the first interface module, and sending a signal output by the second port, through the second interface module, to the active module that is connected to the second interface module;
• and,
• wherein the antenna system further comprises:
• a third active module connected to a third interface module of the antenna device, wherein the third active module comprises a radio frequency unit and a base-band interface, the base-band interface is configured to exchange a digital signal between the third active module and a base-band unit, and the radio frequency unit is configured to mutually convert and process the digital signal and a radio frequency signal, wherein
• the radio frequency unit comprises a transceiver module and a base-band intermediate frequency unit, wherein the transceiver module is configured to convert the radio frequency signal and a intermediate frequency signal, and the base-band intermediate frequency unit is configured to mutually convert and process the intermediate frequency signal and the digital signal.