US 12,438,270 B2
Broadband feed network device for realizing low axial ratio characteristics and a planar array antenna using the same
Soon Young Eom, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Jan. 4, 2023, as Appl. No. 18/149,999.
Claims priority of application No. 10-2022-0116379 (KR), filed on Sep. 15, 2022.
Prior Publication US 2024/0097328 A1, Mar. 21, 2024
Int. Cl. H01Q 21/20 (2006.01); H01Q 1/38 (2006.01); H01Q 3/30 (2006.01); H01Q 13/08 (2006.01); H01Q 15/24 (2006.01); H01Q 21/00 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 3/30 (2013.01) [H01Q 15/24 (2013.01); H01Q 21/0006 (2013.01); H01Q 21/061 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A feed network device which is electrically connected to unit radiating elements for circular polarization, comprising a phase offset compensation circuit configured to correct a phase dispersion error according to a change in frequency so that four quarter arrays obtained by vertically and horizontally dividing a planar array of the unit radiating elements symmetrically are electrically and rotatably sequentially disposed clockwise or counterclockwise;
wherein the four quarter arrays include a first ring array disposed at an inner center of a planar array having a circular structure, a second ring array disposed around the first ring array, and a third ring array which is spaced a predetermined interval from the second ring array and disposed on an outer edge of the planar array.