Patent ID: 7623008
Filing Date: 2009-11-24
Classification: H01P

Abstract:
1. A phase shifter, comprising: an input terminal to which a predetermined input signal is input; a distributor for distributing the predetermined input signal into a plurality of distributed signals; and a plurality of phase shifters for converting a phase of each of the distributed signals into a predetermined phase, each of the phase shifters comprising: a first port to which at least one of the plurality of distributed signals is input; a first microstrip line for transmitting a part of the distributed signals input to the first input port; a coupling line including a plurality of paths having different path length provided by a gap along a transmission direction of the part of the distributed signals, the paths being electrically coupled to the first microstrip line at a first region, for transmitting each of divided signals generated by dividing the part of the distributed signals by the gap through each of the paths; and a second microstrip line provided in parallel with the first microstrip line and electrically coupled to the coupling line at a second region, for transmitting the divided signals transmitted through the coupling line, wherein the coupling line of each of the phase shifters is provided on a dielectric substrate provided to be freely movable along the first microstrip line and the second microstrip line.