| 摘要 |
PROBLEM TO BE SOLVED: To provide a directional coupler that is excellent in mass-productivity that is provided with two dielectric lines without the need of adjustment with specific accuracy for alignment in the case of assembling. SOLUTION: Relating to the directional coupler where a 1st dielectric line 3 provided with an input port 7a and an output port 7b, a 2nd dielectric line 4 provided with an input port 7c and an output port 7d are arranged between a couple of parallel flat conductors 1, 2, and a high frequency signal received from the input port 7a is outputted from the output ports 7b, 7d, 1st and 2nd dielectric lines 3, 4 are formed integrally via a conductor layer 5 with two or more coupling holes 6a, 6b and the distance between the coupling holes 6a, 6b is set so as to be long equivalent to a (2n-1)/4 wavelength (n is an integer) with respect to the guide wavelength of the high frequency signal. |
