| 摘要 |
PROBLEM TO BE SOLVED: To increase the Q of microstrip lines for a resonator element and to decrease an interval between a plurality of the microstrip lines used for signal lines or the like. SOLUTION: The circuit board consists of a multilayered board 1 made of a dielectric material, 1st-3rd microstrip lines 2, 3, 4 that are formed belt- shaped and placed side by side on an upper face of the multilayered board 1, and a 1st ground conductor 5 placed on a lower side of the multilayered board 1 at least opposite to the 1st microstrip line 2. Furthermore, a 2nd ground conductor 6 is placed to an inner layer of the multilayered board 1 opposite to the 2nd and 3rd microstrip lines 3, 4. |
