Assertion: radome's portion | /r/HasProperty | centered at second center
Facets:
Source sentences:
text: Thus, it is clearly highly desirable to provide a radome-lens comprising: a shell of dielectric material having an outer surface in the form of a small circle defined by a sphere and a plane intersecting said sphere, an opening at one end of the shell for reception of an antenna therein, the surface having a central axis which is normal to the plane and extends through the center of the sphere, and an inner surface having a spherical portion centered at a second center disposed along the axis between the first mentioned center and the outer surface and including a plurality of zones extending toward the opening and concentrically disposed along the axis, each zone being centered at the second center, adjacent zones being separated by a frusto-conical surface which converges at the second center, the radial height, h, of each frusto-conical surface being given by ##EQU1##