Abstract: A base station antenna includes a smart bias tee (SBT), an antenna array, a phase shifter, and a filter circuit. The antenna array includes a plurality of antenna elements. The phase shifter includes a plurality of output terminals. Each of the plurality of output terminals is coupled to an antenna element. The filter circuit includes a first filter. An input terminal of the first filter is coupled to either one of output terminals of two ends of the phase shifter. The output terminals are coupled to the SBT. The output terminals of the two ends of the phase shifter have weaker power compared to other output terminals.

Abstract: A device for implementing an antenna Ping function includes a primary module and a secondary module. The secondary module includes a secondary controller, a multiplexer, a first On-Off Keying (OOK) modem, a second OOK modem connected to the secondary controller and a corresponding multiplexer, and a plurality of antenna radio frequency (RF) ports. The multiplexer is connected to the plurality of antenna RF ports. The primary module is connected to the secondary controller through the first OOK modem. The primary module receives a Ping command transmitted by a base station, generates a Ping message, and transmits the Ping message to the secondary controller through the first OOK modem. The secondary controller transmits the received Ping message to the second OOK modem. The second OOK modem transmits the Ping message to a corresponding antenna RF port through the multiplexer. The antenna RF port feeds back a signal to the base station.

Abstract: A device for implementing an antenna Ping function includes a primary module and a secondary module. The secondary module includes a secondary controller, a multiplexer, a first On-Off Keying (OOK) modem, a second OOK modem connected to the secondary controller and a corresponding multiplexer, and a plurality of antenna radio frequency (RF) ports. The multiplexer is connected to the plurality of antenna RF ports. The primary module is connected to the secondary controller through the first OOK modem. The primary module receives a Ping command transmitted by a base station, generates a Ping message, and transmits the Ping message to the secondary controller through the first OOK modem. The secondary controller transmits the received Ping message to the second OOK modem. The second OOK modem transmits the Ping message to a corresponding antenna RF port through the multiplexer. The antenna RF port feeds back a signal to the base station.

Abstract: A base station antenna includes a smart bias tee (SBT), an antenna array, a phase shifter, and a filter circuit. The antenna array includes a plurality of antenna elements. The phase shifter includes a plurality of output terminals. Each of the plurality of output terminals is coupled to an antenna element. The filter circuit includes a first filter. An input terminal of the first filter is coupled to either one of output terminals of two ends of the phase shifter. The output terminals are coupled to the SBT. The output terminals of the two ends of the phase shifter have weaker power compared to other output terminals.

Abstract: A system includes a remote electronic tilt phase shifter module, a motor, a mechanical linkage that connects the motor to the remote electronic tilt phase shifter module, a current management circuit that generates a motor control signal responsive to a current control signal, and a driver circuit that is configured to selectively connect the motor to a power supply in response to the motor control signal.