By Xuan Hui Wu, Ahmed A. Kishk
Substrate built-in waveguide (SIW) is a brand new form of transmission line. It implements a waveguide on a section of revealed circuit board by way of emulating the aspect partitions of the waveguide utilizing rows of steel posts. It inherits the advantages either from the microstrip for compact dimension and simple integration, and from the waveguide for low radiation loss, and hence opens one other door to layout effective microwave circuits and antennas at a cost effective. This booklet provides a two-dimensional fullwave research option to examine an SIW circuit composed of steel and dielectric posts. It combines the cylindrical eigenfunction enlargement and the strategy of moments to prevent geometrical descritization of the posts. the tactic is gifted step by step, with all of the invaluable formulations supplied for a practitioner who desires to enforce this system through himself. This publication covers the SIW circuit revealed on both homogeneous or inhomogeneous substrate, the microstrip-to-SIW transition and the speed-up strategy for the simulation of symmetrical SIW circuits. varieties of SIW circuits are proven and simulated utilizing the proposed approach. additionally, numerous slot antennas and horn antennas fabricated utilizing the SIW expertise also are given. desk of Contents: advent / SIW Circuits Composed of metal Posts / SIW Circuits with Dielectric Posts / Even-Odd Mode research of a Symmetrical Circuit / Microstrip to SIW Transition and part Mode SIW / SIW Antennas
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Extra resources for Analysis and Design of Substrate Integrated Waveguide Using Efficient 2D Hybrid Method (Synthesis Lectures on Computational Electromagnetics)
4. 19: S parameters of the T junction in Fig. 16. 1 GHz, and the even-odd mode analysis only takes 176 seconds on the same computer. For the T junction in Fig. 16, the even-odd mode analysis takes 70 seconds to simulate 20 frequency points from 22 to 26 GHz, while the simulation of the entire structure takes the same amount of time of 71 seconds. The improvement in efficiency is not as significant as the ring hybrid case because the T junction does not extend that much in the direction perpendicular to the symmetry wall.
14 for magnitude and in Fig. 15 for phase. If the symmetry wall passes across a port, that port should be split into two symmetrical ports before applying the even-odd mode analysis. Fig. 16 shows a symmetrical T junction designed using the substrate integrated waveguide technique, where the symmetry wall goes through Port A. In order to apply the even-odd mode analysis, Port A is split into two symmetrical ports Port 1 and Port 1 as shown in Fig. 17. The field distributions of Port 1 and Port 1 are kept the same as if they were not split.
5 /square surface impedance for the metallic posts. 27 CHAPTER 3 SIW Circuits with Dielectric Posts In Chapter 2, a method is presented to study a substrate integrated waveguide circuit with metallic posts inserted inside a homogeneous substrate. Although this type of circuit is the most widely adopted so far, a substrate integrated waveguide circuit with inhomogeneous substrate gives more freedom in the circuit design, and it may give some compact designs. This chapter generalizes the method presented in Chapter 2 to deal with a substrate integrated waveguide circuit with both dielectric and metallic cylinders.
Analysis and Design of Substrate Integrated Waveguide Using Efficient 2D Hybrid Method (Synthesis Lectures on Computational Electromagnetics) by Xuan Hui Wu, Ahmed A. Kishk
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