| 摘要 |
A multilayer coupled-lines directional coupler of the quarter wavelength type comprises a first, a second and a third conductive layer, joined by means of dielectric layers. The first conductive layer comprises a first (3) and a second (4) conductive strip, separated, mutually parallel, each in one end connected to a first output (10) and in another end connected to a second output (10'). The second conductive layer comprises a third conductive strip (6), parallel to the first (3) and the second (4) conductive strip, in one end connected to a third output (12) and in another end connected to a fourth output (12'). The first conductive layer comprises a fourth conductive strip (5), parallel to and located between the first (3) and the second (4) conductive strip, in one end connected to the third output (12), and in another end connected to the fourth output (12'). |
