| 摘要 |
PURPOSE:To realize a two-line intersection circuit of extremely simple plane constitution which has high reliability by providing four straight lines which cross one another at one point at 45 deg. on a dielectric substrate as axes of symmetry and arranging a plane resonator which is symmetrical about said axes of symmetry. CONSTITUTION:When a transmission frequency is close to the resonance frequency of a square resonator 8, electric fields at the centers of side 13 and 15 are both eliminated once the square resonator 8 is excited by a high frequency signal sent through a strip line 10, and then the high frequency signal is transmitted to neither a strip line 14 nor a strip line 16 to obtain a maximum electric field at a side 11 as well as an electric field at a side 9, so the high frequency signal is sent to a strip line 12 connected to the center of the side 11 without any loss. Consequently, the 1st high frequency transmission line consisting of the strip lines 10 and 12 and the 2nd high frequency transmission line consisting of the strip lines 14 and 16 are allowed to cross to each other in a plane while isolated from each other. |
