Synthesis technique of six-conductor symmetrically coupled microstrip multiconductor line (MMCL), operating in a normal mode, is presented in this article. Results of the calculations acquired using the proposed mathematical model of an MMCL differ only by 3 % from the results acquired by other researchers. Examples of synthesis of six-conductor symmetrically coupled MMCL, operating in the even- and odd normal modes, are submitted in the article, also, dependences of parameters of these lines are investigated. It was established that the external conductors of an MMCL impart the most for ensuring the normal mode in an MMCL, and the organization of the internal conductors remains regular in this case. It is shown that parameters of the synthesized MMCL operating in the even normal mode depend in greater degree on the space between conductors, than MMCL operating in the odd normal mode. Ill. 7, bibl. 27, tabl. 2 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.110.4.285

Inhomogeneities of the electromagnetic field are observed at the edges of the electrodynamic delay systems which are designed based on the concept of periodic multiconductor line. The inhomogeneity manifests itself as a non-uniformity of the characteristic impedance and the effective permittivity of the multiconductor line consisting of a finite number of conductors. The influence of non-uniformity of impedance and effective permittivity of the multiconductor microstrip line on the frequency responses and characteristics of meander delay lines is studied in this paper. It is shown that matching characteristic impedance and effective permittivity of the multiconductor line the bandwidth of the delay line can be extended and delay time increased preserving its dimensions. Index Terms-effective permittivity, impedance matching, meander delay lines, method of multiconductor line, mode matching. Two kinds of non-uniformity appear in real MMDLs based on the mathematical model of the MCMLs: − non-uniformity of characteristic impedance Z i ≠ Z j , − non-uniformity of effective permittivity ε r eff i ≠ ε r eff j , where i and j are numbers of conductors of the MMDL, and

No abstract

Abstract. The article presents a synthesis technique for a symmetrically coupled multiconductor microstrip line operating in normal modes and looks at the examples of the synthesis of a ten-conductor symmetrically coupled multiconductor microstrip line operating in even-and odd normal modes. The paper investigates the dependences of the parameters of the introduced lines.