Synthesis of Six-Conductors Symmetrically Coupled Microstrip Line, Operating in a Normal Mode

摘要

The generalized structure of the symmetrically coupled microstrip multiconductor line (MMCL) is shown in Fig. 1. The MMCL consists of a dielectric substrate with a conducting layer (reference or grounded conductor) on one side and microstrip conductors on the other side. The number of the microstrip conductors, their width and space between them can be specified independently. Prominent feature of symmetrically coupled MMCLs is their "mirror" structure, i.e. equality of width of the microstrip conductors W_i = W_(N+1-i) located on identical distances concerning a vertical plane of symmetry of the MMCL. Due to their planar design, these lines are broadly used in many microwave application areas [1-3]. MMCL are also successfully used as physical models for designing various microwave devices [4-13].