Patent ID: 11888230
Assignee: SPACE EXPLORATION TECHNOLOGIES CORP.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A parabolic antenna assembly, comprising:
a main reflector;
a feed system in RF communication with the main reflector and including a horn and a dielectric portion; and
a sub-reflector in RF communication with the feed assembly, wherein the sub-reflector includes a body portion and a stem portion mechanically coupled to one another, wherein a reflecting surface of the sub-reflector is defined by at least a portion of the body portion and at least a portion of the stem portion, wherein the dielectric portion spaces the sub-reflector from the horn, wherein the sub-reflector includes an axially-symmetric choke for providing virtual continuity at the reflecting surface, wherein the dielectric portion has a first end in contact with the body portion of the sub-reflector, wherein the dielectric portion includes an internal collar at the first end defining an opening therein, and wherein an extending portion of the body portion is received within the opening in the dielectric portion.