The Influence of Non-Uniformity of the Multi-Conductor Line Parameters on Frequency Responses of the Meander Delay Line

Abstract

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

Plačiajuosčių planariųjų lėtinimo sistemų modeliai ir jų tyrimas

“…Matematinis planariosios lėtinimo sistemos modelis DL metodu gaunamas apjungus lygtis apibūdinančias TEM bangos sklidimą DL laidininkuose ir kraštinių sąlygų lygtis į lygčių sistemą (Pomarnacki et al 2010). Planariosios lėtinimo sistemos laidininkų skerspjūvio forma, matmenys, ekranai ir magnetodielektrikai jos konstrukcijoje įvertinami apskaičiuojant DL laidininkų banginius laidumus ir elektromagnetinės bangos sklidimo išilgai šių laidininkų greitį (Krukonis et al 2013).…”

Investigation of Anisotropic Cylindrical Semiconductor-Dielectric Waveguides

“…Various waveguides systems are widely applied for travelling-wave tubes, delay lines, phase modulators or converters and other microwave devices [1]- [5].…”