Equivalence of Short Circuits between SIRW with Cylinder Wall and Regular Waveguide with Solid Wall

In this paper, the formula of equivalence of short locations of SIRW (with shorting cylinder wall) from the rectangular waveguide (RW) (with shorting solid wall) has been obtained. The similarity between components of the plane propagation-constant in the waveguide means that the formulas of short location are directly converted from the formula of width equivalence of SIRW from RW, the width formula has been verified to be accurate. The results have shown that, the width equivalence between SIRW and RW depends on the width of SIRW, cylinder radius and separation, being independent with frequency. However, the location equivalence from cylinder short wall to solid short wall depends on the frequency, although the dependence is still small. To end, it may be noted that the formulas apply only to quasi-static separation W of the cylinders along the shorting wall, i.e., W les lambda_g/20. If the cylinder radius R < W/4, there will be power leakage out of the SIRW short. This leakage is to be studied