| 摘要 |
PROBLEM TO BE SOLVED: To provide an easy-to-manufacture millimeter wave transmission line conversion structure that can be made compact, and variation in characteristics of which is less likely to occur.SOLUTION: In a structure for propagating electromagnetic waves of milli-wave zone by using a waveguide structure where a waveguide 31 is filled with a dielectric 33, between one end side of the waveguide 31 and a microstrip 10, and between the other end side of the waveguide 31 and a waveguide 20, the bore of the waveguide 31 and the relative permittivity of the dielectric 33 are set so that the length of the waveguide 31 is equal to 1/4 of the guide wavelength of a desired propagation frequency, and the impedance Zx of the waveguide 31 satisfies a relation Zx=√(Z1×Z2), where Z1 is the impedance of the microstrip 10, and Z2 is the impedance of the waveguide 20.SELECTED DRAWING: Figure 1 |
