Experimental VSWR´s and radiation patterns of an axial rectangular slot on conducting cylinders of varying curvature

band measurements of the VSWR\´s and radiation patterns of an axial rectangular slot on six conducting cylinders of different curvature are reported. The cylinders had ( is the free-space wavenumber and is the cylinder radius) varying from to 1.5. Measurements were performed both with the slot bare and with the slot covered by space cloth. For as low as 3, the effect of curvature was relatively small. Below , changes in the VSWR and radiation pattern were more pronounced, the pattern being relatively more sensitive to changes in than the VSWR.