Abstract: The present disclosure relates to a signal processing device and a base station antenna. The signal processing device comprises: a substrate; a beam-forming network, which is provided on one side of the substrate; and a calibration circuit, which is provided on the same side of the substrate on which the beam-forming network is provided; wherein the beam-forming network is connected to the calibration circuit via a connecting trace on the substrate.

Abstract: A multi-band phase shifter assembly comprises: a first substrate; a first rotary wiper arm phase shifter, configured to phase shift a first RF signal in a first frequency band; a second rotary wiper arm phase shifter, configured to phase shift a second RF signal in a second frequency band; first filters, configured to pass the first RF signal while blocking the second RF signal, the input end of each first filter is connected to a corresponding output port of the first rotary wiper arm phase shifter; second filters, configured to pass the second RF signal while blocking the first RF signal, the input end of each second filter is connected to a corresponding output port of the second rotary wiper arm phase shifter; and a conductive structure, configured to electrically connect one input end of the first filters with one output end of the second filters.

Abstract: The present disclosure relates to a signal processing device and a base station antenna. The signal processing device comprises: a substrate; a beam-forming network, which is provided on one side of the substrate; and a calibration circuit, which is provided on the same side of the substrate on which the beam-forming network is provided; wherein the beam-forming network is connected to the calibration circuit via a connecting trace on the substrate.