Substrate Integrated Wave Guide filter at 10 GHz using commercial FR-4 lossy substrate

Abstract

a) (b) Figure I. Substrade integrated wave guide mapped to a rectangular waveguide : (a) 3D view of SIWG [12] and ; (b) equivalent rectangular waveguide representation .Cooper metallization III, a comparative analysis between the results and simulations is performed. In section IV, some comments and conclusions are presented. II. SIWG AND FILTER DESIGNThe Substrate Integrated Waveguide configuration consists of a dielectric substrate whose boundaries in both sides are walls consisted of parallel arrays of metalized via-holes [1). This structure can be related to an dielectric rectangular waveguide (RWG) [1], [2]. Fig. 1 illustrates (a) a three-dimensional view of a SIWG and (b) its rectangular waveguide equivalent model. The SIWG was designed using a FR-4 substrate with the following characteristics: loss tangent tano = 0.019, dielectric constant e; = 4.3, thickness h = 1.575, and cooper metallization thickness t = 0.035mm. In Fig. I (a), d is the via-hole diameter and p is the center-to-center spacing of the via-holes in the matrix wall.

Terahertz filters using a new design procedure

“…Considering a broadband filter, only four vias are needed, because the higher quantity of vias, the narrower is the filter. And using the four metallized vias method, we have two vias with high radii and the other two vias have small radii , the equivalent circuit is illustrated in Figure where thru are the distancies between vias which can create the filter and are modeled as waveguides . Figure presents the equivalent 3D model for the prototype.…”

Estudo de Parâmetros e Otimização de um Conjunto de Antenas SIW para Aplicações em Ondas Milimétricas

“…1, foram realizados diversos testes de otimização de parâmetros. Através da proposta de Magri [7], uma antena SIW foi projetada e características como perda de retorno, ganho e largura de feixe foram avaliadas através de um procedimento de testes. Inicialmente, foram calculados diferentes valores de abertura do guia SIW para cada uma das espessuras padrão do substrato RT/duroid 5880 e foram avaliados valores de 0,5 a 1 mm de diâmetro das vias (d).…”

A 10‐GHz SIWG slot array antenna prototype on FR‐4 substrate

“…The proposal of this paper is to simulate and fabricate a four‐by‐one SIWG slot array antenna using FR‐4 substrate, which is a low‐cost frequently used material in electronic printed circuit boards. It is known that the FR‐4 substrate works well at 10 GHz . Now the goal is to prove that the FR‐4 substrate also works well as raw material for an antenna radiating at 10 GHz with wide‐band.…”