| 摘要 |
<p>[PROBLEMS] To provide a transmission line which can be manufactured at lower cost and higher accuracy compared with an NRD guide having a conventional structure and has transmission characteristics equivalent to those of the NRD guide or higher. [MEANS FOR SOLVING PROBLEMS] The transmission line (1) is provided with first and second dielectric layers (11, 12); a third dielectric layer (13) stacked to be sandwiched between the first and second dielectric layers (11, 12); and a plurality of first through holes (21) and a plurality of second through holes (22) which penetrate the first to third dielectric layers (11-13). The dielectric layer (13), which is a middle layer, has a relatively high dielectric constant (e1) to a dielectric constant (e2) of the first and second dielectric layers (11, 12). In an area sandwiched by rows of the first and second through holes (21, 22), most of electromagnetic waves in LSM<SUB>01</SUB> mode propagate in the third dielectric layer (13) whose dielectric constant is relatively high.</p> |
