US 11,749,886 B1
Apparatus, system, and method for preventing radio frequency energy leaks and intrusions via choke structures
Farbod Tabatabai, San Francisco, CA (US); and Srishti Saraswat, Santa Clara, CA (US)
Assigned to Meta Platforms, Inc., Menlo Park, CA (US)
Filed by Meta Platforms, Inc., Menlo Park, CA (US)
Filed on Aug. 4, 2021, as Appl. No. 17/393,431.
Claims priority of provisional application 63/068,234, filed on Aug. 20, 2020.
Int. Cl. H01Q 3/10 (2006.01); H01Q 1/52 (2006.01); H01Q 21/00 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 3/10 (2013.01) [H01Q 1/52 (2013.01); H01Q 21/0037 (2013.01); H01Q 21/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An antenna comprising:
a bottom Radio Frequency (RF) guide plate rotatably coupled to a base via a first shaft controlled by an azimuth motor;
a top array plate rotatably coupled to the base via a second shaft controlled by an elevation motor, the top array plate and the bottom RF guide plate collectively forming a waveguide configured to direct RF signals in a specific direction; and
a choke structure coupled to the top array plate, the choke structure and the bottom RF guide plate collectively producing a RF choke that mitigates RF energy leakage or intrusion between the waveguide and an area outside the waveguide.