| 摘要 |
The invention relates to a supply system for controlling variable electrical tilt in the vertical plane of array-formation radiating elements of a multiband antenna, comprising a Butler matrix having N inputs and N outputs including hybrid couplers, each input being capable of receiving a radio-frequency signal and each output being capable of transmitting the signal to at least one radiating element. At least one output of the Butler matrix is connected to a module that allows an independent electrical tilt for each frequency band, said module comprising: (i) a first stage of diplexers, which separates the signal according to the different frequency bands; (ii) a second stage of fixed-delay lines, which applies a given electrical delay to the signal in each frequency band; (iii) a third stage of variable phase shifters which introduce an adjusted signal phase shift into each frequency band; and (iv) a fourth stage of diplexers, which groups together the signals in the different frequency bands in order to transmit same to at least one radiating element. |
