| 摘要 |
PURPOSE:To provide a miniaturized chip type directional coupler by obtaining a 1/4 wavelength strip line electrode part by the total distance of strip line electrodes formed on plural dielectric substrates. CONSTITUTION:An 1/4 wavelength strip line electrode part is obtained by the total distance of strip line electrodes 3f and 5f (3g and 5g) formed on two strip line electrode substrates 3 and 5. Consequently, it is sufficient that each of strip line electrodes 3f and 5f (3g and 5g) of strip line electrode substrates 3 and 5 takes the distance of a half of the 1/4 wavelength. Therefore, the area of each of strip line electrode substrates 3 and 5 is reduced to miniaturize the chip type directional coupler. Since the strip line electrodes are zigzag formed on substrates 3 and 5, the substrate area is reduced furthermore in comparison with the straight formation. |
