180amp;deg; HYBRID DIRECTIONAL COUPLER AND BALANCED MIXER

摘要

PROBLEM TO BE SOLVED: To provide a 180° hybrid directional coupler that is constituted by adjacently arranging two output terminals.;SOLUTION: In this 180° hybrid directional coupler, input terminals 1 and 2 are connected to each other through a first transmission line 50 having characteristic impedance Z₁ and a length λ/4. The input terminal 1 and an output terminal 3 are connected to each other through a branching section 10, a second transmission line 6 having characteristic impedance Z₃ and the length λ/4, and a third transmission line 7 having characteristic impedance Z₂ and the length λ/4. An output terminal 4 is connected to the branching section 10 through a fourth transmission line 8 having the characteristic impedance Z₂ and the length λ/4, at the same time, to the input terminal 2 through a fifth transmission line 9 having the characteristic impedance Z₃ and the length λ/4. In addition, the output terminals 3 and 4 are provided in an adjoining state.;COPYRIGHT: (C)2003,JPO