Title :
A Closed-Form Formula for propagation characteristics of substrate integrated waveguide
Author :
Salehi, Mehdi ; Mehrshahi, Esfandiar
Author_Institution :
Dept. of Electr. Eng., Shahid Beheshti Univ., Tehran, Iran
Abstract :
An analytical simple method is developed to calculate dispersion characteristics of substrate integrated waveguide (SIW). The complex propagation constant is derived as a closed-form equation which is a function of geometrical parameters. The periodic structure of an SIW can be considered as two consecutive rectangular waveguide with specific difference in widths. Each section is modeled by a transmission (ABCD) matrix. Propagation constant of the SIW is extracted by applying the Floquet theorem to the overall transmission matrix of a single unit cell. The results of this simple analytic expression agree well with numerical techniques and empirical equations.
Keywords :
radiowave propagation; substrate integrated waveguides; transmission line matrix methods; Floquet theorem; closed form equation; closed form formula; complex propagation constant; propagation characteristics; substrate integrated waveguide; transmission matrix; Equations; Mathematical model; Propagation constant; Rectangular waveguides; Substrates; Transmission line matrix methods; Dispersion characteristic; periodic structure; substrate integrated waveguide (SIW); transmission matrix; waveguide discontinuity;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2010 Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7590-2
Electronic_ISBN :
978-1-902339-22-2
