Patent ID: 8577308
Filing Date: 2013-11-05
Classification: H04B

Abstract:
1. A beamformer, comprising: a plurality of dividers, each of which is configured to receive and divide an input signal having a same frequency into a plurality of output signals output along a plurality of paths, respectively; an input switch which selects one of the dividers such that the input signal is input to a selected divider; a phase shifter which shifts phases of the output signals from the selected divider according to which divider is selected among the dividers; and an output switch which transmits the phase-shifted output signals from the phase shifter to an antenna, wherein the phase shifter comprises a plurality of phase shifting units each of which is configured to receive the output signals from the selected divider and shift phases of the output signals, and wherein the plurality of phase shifting units are different from one another in configuration so that patterns of beams formed by the output signals phase-shifted at the phase shifting units are different from one another based on which of the plurality of dividers is selected by the input switch.