US 12,244,069 B2
Cross dipole circularly polarized antenna
Alex Sissoev, Chatsworth, CA (US); Wenhao Zhu, Chatsworth, CA (US); Anthony de Vera, Porter Ranch, CA (US); and Joseph Klein, Chatsworth, CA (US)
Assigned to AEROANTENNA TECHNOLOGY, INC., Chatsworth, CA (US)
Filed by AEROANTENNA TECHNOLOGY, INC., Chatsworth, CA (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,198.
Prior Publication US 2023/0395995 A1, Dec. 7, 2023
Int. Cl. H01Q 21/26 (2006.01); H01Q 1/28 (2006.01); H01Q 1/42 (2006.01); H01Q 1/48 (2006.01)
CPC H01Q 21/26 (2013.01) [H01Q 1/28 (2013.01); H01Q 1/42 (2013.01); H01Q 1/48 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cross dipole antenna element comprising:
a flexible substrate;
a first pair of dipole arms disposed on the flexible substrate;
a second pair of dipole arms disposed on the flexible substrate;
a plurality of feed points disposed at a center portion of the flexible substrate and between the first and second pairs of dipole arms;
a metallic plate forming a ground plane for the antenna element; and
a dielectric spacer disposed between the center portion of the flexible substrate and the metallic plate,
wherein the first and second pairs of dipole arms are attached to the metallic plate at distal ends of the first and second pairs of dipole arms relative to the center portion,
wherein the dielectric spacer has a cylindrical shape with channels formed therein corresponding to the feed points,
wherein the dielectric spacer contacts both the flexible substrate and the metallic plate at opposite longitudinal ends of the dielectric spacer,
wherein the metallic plate is disposed a predetermined distance from an antenna body to form a backing cavity between the metallic plate and the antenna body,
wherein the first and second pairs of dipole arms extend away from the center portion by a first length defined between the distal ends,
wherein slots are formed in the metallic plate separated by a second length that is less than the first length, the distal ends of the first and second pairs of dipole arms being operably coupled to the metallic plate at the slots, and
wherein the cross dipole antenna element is mounted on the antenna body.