Design of Ku-Band Filter based on Substrate-Integrated Circular Cavities (SICCs)

Abstract

International audienceThis paper proposes several topologies of filters based on substrate integrated circular cavities (SICCs). SICC works on TM modes and the benefits of this technology are mainly an increased quality factor and a better design flexibility. Filters are made from cylindrical cavities integrated into a planar substrate and are fed by microstrip lines through coupling slots. Cavities are inter-coupled by irises. One-order, second-order and third-order filters are presented. Preliminary measurement data are compared to those from simulations performed with a 3-D electromagnetic structure simulator. These filters rely on the SICC concept, whose principle is explained hereafter

Analysis of Lossy Siw Structures Based on the Parallel Plates Waveguide Green's Function

“…In fact, even if the structures presented in this paper are not Figure 6. Scattering parameters of a single cavity circular filter, as in [21], h = 0.380 mm, w = 3.8 mm, wio = 1.683 mm, a = 0.2 mm, r = 2.4 mm, p = 0.7 mm, ε r = 9.9, tan δ = 0.001, σ = 5.8 * 10 7 S/m. Figure 7.…”

Vertical Transition in Multilayer Millimeter Wave Module Using Circular Cavity

“…The distance between centre line of the aperture and circle centre d; the length of the stub l (calculated from centre line of the aperture); /4), h 0 = 2 mm, w 0 = 0.2 mm, R 0 = 1.6 mm, the transition structure was modeled with solid wall firstly and then the solid wall was replaced by vias-array under the guidelines of references [8][9][10][11], Some applications of SICC can be found in references [12][13][14], some important design guidelines can be found in [15][16][17][18][19]. The radius of the cavity R and the gap location d were two key parameters in designing of the transition structure; the R can be calculated with (3), and the parameter d was approximately λ g /4 ; the width of the microstrip lines were calculated to guarantee a 50 Ω impedance.…”

A Compact Multilayer Dual-Mode Substrate Integrated Circular Cavity (Sicc) Filter for X-Band Application

“…Compact RF/microwave filters with low profile and high performance are required in many communication systems. For such a demand, some new planar waveguide structures called substrate integrated waveguides (SIW) have been proposed [1][2][3][4][5][6][7][8], and applied to develop many high-quality microwave wave components. SIW is a new type of dielectric-filled waveguide that is synthesized in a planar dielectric substrate with metal vias.…”

“…However, the substrate integrated waveguide circular cavity (SICC) filter is also a good choice in the design of high performance filter. It not only have the same attractiveness as classical SIW filters in terms of planar compatibility, but also presents a higher quality factor, lower loss, design flexibility [4][5][6][7]. In [4], a planar diplexer is developed based on the complementary SICCs.…”

“…In [4], a planar diplexer is developed based on the complementary SICCs. In [5], several planar topologies of filters based on SICCs are proposed. The SICC technology effectively improves the quality factor and the design flexibility.…”