| 摘要 |
PURPOSE:To improve the insertion loss and the specific band width remarkably and to attain miniaturization, by using three sheets of ferrite cores, arranging a center conductor between layers and connecting the conductors electrically in series. CONSTITUTION:The three ferrite cores 3a, 3b, 3c are arranged in a shield case 12, two sets of orthogonal center conductor pairs 1, 2 and 1', 2', are respectively inserted between two layers, and they are connected in series electrically. The two sets of center conductor pairs are shown in figure as 1, 2 and 1', 2'. One end of the center conductor pairs 1', 2' is grounded. The ends are connected to the shield case 12 or a ground plate 14 actually. The other ends of the center conductor pairs 1'', 2'' are connected to the respective ends of the center conductor pairs 1', 2', and the outer side of the ferrite cores 3a, 3b, 3c. The other ends of the center conductor pairs 1', 2' are connected to input and output terminals 7, 8. |
