Analysis of Post-Wall Waveguide Based on H-Plane Planar Circuit Approach

Analysis of Post-Wall Waveguides and Circuits Using a Model of Two-Dimensional Photonic Crystals

“…Although a e slightly changes when ω varies, it may be practically regarded to be almost constant within the same degree of approximation as in Eq. (8). Using the equivalent rectangular waveguide model, a very simple expression for the propagation constant β m (ω) of the even T E m0 mode is retrieved and given below:…”

“…Solving the dispersion equation based on a perturbation analysis, the attenuation constant due to the leakage loss and the effective width of the equivalent rectangular waveguide are calculated. To validate the present analysis, numerical examples for the post-wall waveguides and post-wall waveguide-based passive circuits, which act as bandpass filters, are demonstrated and compared with those reported in [5][6][7][8][9].…”

“…The post-wall circuits are designed by inserting additional metallic or dielectric posts in the post-wall waveguide. The modal properties and performances of post-wall waveguides and circuits have been extensively investigated [also in the framework of SIWs] using various analytical or numerical techniques [1][2][3][4][5][6][7][8][9].…”

Novel broadband coupler based on corrugated half mode substrate integrated waveguide

“…The initial width of HMSIW (w5+L5 in Table I) can be then determined as the half of the SIW counterpart. Second, on account of the introduction in [9,10], the initial transition width between input/output ports of the HMSIW is around half of their SIW. Third, on the basis of above, open-circuit quarter-wave-length microstrip stubs are in place of vias which are usually used to form the sidewalls of the CHMSIW.…”

“…In recent years, with the rapid development of microwave and millimeter communications systems, the substrate integrated waveguide technology [1] has attracted many people attention owing to its low cost and completed planar structure, some high quality microwave and millimeter devices have also been proposed [2,3,4,5,6,7,8,9,10]. In these literatures, there have been only a limited number of active circuits described [11,12], since the design of both mechanical support and dc bias are a big challenge in active waveguide circuits based on SIW and related technology.…”