FEED NETWORK IMPROVING BEAMWIDTH CONVERGENCE OF WIDEBAND ANTENNA

摘要

The present invention discloses a feeding network for improving a convergence of a lobe width of a wideband antenna, including a first power divider, a delay line, a 90° electric bridge and a second power divider, wherein the first power divider converts a signal input to the feeding network into two signals, and the phase of one of the two signals is changed by the delay line and then input to the 90° electric bridge, and the other of the two signals is input to the 90° electric bridge directly, and wherein the 90° electric bridge converts the received two signals into two signals with same phase and different amplitudes, outputs one of them to a radiating unit via the second power divider and outputs the other signal to another radiating unit directly. The present invention designs a particular feeding network to make the delay line change the phase of the signal to adjust the phase difference of the signals input to the 90° electric bridge and finally change the amplitude allocation of signals output from the 90° electric bridge, such that the amplitude of each radiating unit can vary with the frequency, thereby effectively improving the convergence of the lobe width of the wideband antenna.