The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The point-matching meshless method with radial basis functions (RBFs) may exhibit an unwanted strong dependence on the position of the collocation points and a poor accuracy over the first TE modes calculation. In this letter, we show how to reduce these two drawbacks by adding a random factor to the definition of the shape parameters of each RBF. This new strategy shows a considerable improvement...
A new technique for reducing the substrate permittivity in a Substrate Integrated Waveguide (SIW) structure is presented, consisting of removing a centered rectangular box of substrate dielectric material, which increases the equivalent waveguide impedance. This technique can be applied to the implementation of high-impedance SIW sections (perforated regions) sandwitched between low-impedance sections...
In this paper the extension of the Boundary Integral-Resonant Mode Expansion (BI-RME) method to the modeling of lossy waveguide components is discussed. The proposed technique is based on the combination of the BI-RME method and of a perturbation approach. The generalized admittance matrix of the circuit, which is provided by the BI-RME method as a pole-expansion in the frequency domain, is perturbed...
This paper presents recent advances in the electromagnetic modeling of substrate integrated waveguide (SIW) components. In particular, the modeling of different aspects is discussed, namely the dispersion characteristics, the losses, and the overall device simulation. The different modeling approaches, based on semi-analytical formulas, full-wave simulations and equivalent circuits are presented.
This paper presents some recent advances in the electromagnetic modeling and design of substrate integrated waveguide (SIW) components. The modeling of losses in SIW structures is discussed in details, and a new formula for the calculation of the attenuation constant due to radiation loss is introduced. In addition, an efficient technique for the modeling of arbitrarily shaped SIW components is discussed:...
This paper presents an efficient technique for the evaluation of different types of losses in substrate integrated waveguide (SIW). This technique is based on the Boundary Integral-Resonant Mode Expansion (BI-RME) method in conjunction with a perturbation approach. This method also permits to derive automatically multimodal and parametric equivalent circuit models of SIW discontinuities, which can...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.