Analysis of Coupling Effects in Transmission Lines Using the BLT Equation and Numerical Methods

Abstract

The electromagnetic topology and the BLT equation has been used as useful techniques to analyze coupling effects of huge devices. But in the case of systems including complex parts, applying the BLT equation can be difficult to manifest the complex parts with analytic solutions. To resolve this problem, a numerical method can be used to parts of the whole system in advance. In this paper, a microstrip line filter is analyzed using the BLT equation combined with numerical solutions. Consequently, achieved graphs from the BLT equation show good agreements with graphs obtained using a numerical method only.

Analysis of coupling effects in waveguides using the BLT Equation and Numerical Methods

“…1 are analyzed using the method proposed in [4]. It has two different slots which are considered as complex parts.…”

“…Each partial structure has the length of 20 mm, which means a distance of each slot, D is 10 mm. This distance from discontinuity must be required to satisfy the condition for applying numerical results to the BL T equation [4]. As previously mentioned, numerical solutions for the two parts of slot A and B must be obtained first, so in this work three-dimensional full-wave analysis based on finite element method has been utilized.…”

“…Hence, Baum-Liu-Tesche (BL T) equation based on electromagnetic topology (EMT) technique has been studied as an alternative to save resources [2]- [3], and has performed well with simple structures. Recently, to expand its application to further complicated structures numerical solutions are combined with the BL T equation and the proposed method has been validated with an example of transmission lines [4]. In this paper, the BL T equation and numerical solutions are applied to a rectangular waveguide which is similar to the real structure of small missiles.…”