Numerical De-Embedding of Effective Wave Impedances of Substrate Integrated Waveguide With Varied Via-to-Via Spacings

SIW is considered as an effective rectangular waveguide with periodically loaded vias on its two side walls instead of vertical plates. Effective wave impedances of substrate integrated waveguide (SIW) with varied via-to-via spacings are for the first time numerically de-embedded from three-dimensional (3-D) full-wave algorithm by virtue of a short-open-load (SOL) calibration approach. Full-wave simulation is at first conducted to model a finite-cell SIW with two feeding uniform waveguides. Afterwards, three calibration standards are formed and modeled to de-embed the two-port ABCD matrix of the finite-cell SIW section. In addition to propagation constant, effective wave impedance of the SIW can be accurately derived without any prior assumption. After numerical convergence versus unit cells is studied, these parameters are gained to give the complete view on guided-wave characteristics along the SIW.

[1]  Ke Wu,et al.  Design Consideration and Performance Analysis of Substrate Integrated Waveguide Components , 2002, 2002 32nd European Microwave Conference.

[2]  Ke Wu,et al.  Modeling of Conductor, Dielectric, and Radiation Losses in Substrate Integrated Waveguide by the Boundary Integral-Resonant Mode Expansion Method , 2008, IEEE Transactions on Microwave Theory and Techniques.

[3]  Ke Wu,et al.  Numerical multimode calibration technique for extraction of complex propagation constants of substrate integrated waveguide , 2004, 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535).

[4]  Lei Zhu,et al.  Guided-wave characteristics of periodic coplanar waveguides with inductive loading - unit-length transmission parameters , 2003 .

[5]  Jens Bornemann,et al.  Designing the Width of Substrate Integrated Waveguide Structures , 2013, IEEE Microwave and Wireless Components Letters.

[6]  Ke Wu,et al.  Accurate modeling, wave mechanisms, and design considerations of a substrate integrated waveguide , 2006, IEEE Transactions on Microwave Theory and Techniques.

[7]  L. Perregrini,et al.  Dispersion characteristics of substrate integrated rectangular waveguide , 2002, IEEE Microwave and Wireless Components Letters.

[8]  K. Gupta,et al.  Microstrip Lines and Slotlines , 1979 .

[9]  Ke Wu,et al.  Simulation and experiment on SIW slot array antennas , 2004, IEEE Microwave and Wireless Components Letters.

[10]  M. Ando,et al.  Single-layer feed waveguide consisting of posts for plane TEM wave excitation in parallel plates , 1998 .