US 12,149,006 B2
Frequency-division duplexing (FDD) type antenna device for implementing spatial-polarization separation of beams using quad-polarized antenna module array
Young Chan Moon, Suwon-si (KR); Sung Hwan So, Hwaseong-si (KR); and Oh Seog Choi, Hwaseong-si (KR)
Assigned to KMW INC., Hwaseong-si (KR)
Filed by KMW INC., Hwaseong-si (KR)
Filed on Jul. 14, 2022, as Appl. No. 17/865,338.
Application 17/865,338 is a continuation of application No. PCT/KR2021/000623, filed on Jan. 15, 2021.
Claims priority of application No. 10-2020-0006676 (KR), filed on Jan. 17, 2020; and application No. 10-2020-0051182 (KR), filed on Apr. 28, 2020.
Prior Publication US 2022/0359985 A1, Nov. 10, 2022
Int. Cl. H01Q 5/28 (2015.01); H01Q 21/24 (2006.01); H04B 1/00 (2006.01)
CPC H01Q 5/28 (2015.01) [H01Q 21/24 (2013.01); H04B 1/0057 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A frequency division duplexing (FDD) type antenna device for implementing spatial-polarization separation of beams, the FDD type antenna device comprising:
a quad-polarized antenna module array including first radiating elements that have the same polarization direction and share a first signal path, second radiating elements that have a polarization direction orthogonal to the first radiating elements and share a second signal path, third radiating elements that have a difference in polarization direction of 45° with respect to the second radiating elements and share a third signal path, and fourth radiating elements that have a polarization direction orthogonal to the third radiating elements and share a fourth signal path, wherein each of the first signal path and third signal path is configured to convey transmission signals and each of the second signal path and fourth signal path is configured to convey reception signals;
a filter unit including a first filter that filters a signal of the first signal path, a second filter that filters a signal of the second signal path, a third filter that filters a signal of the third signal path, and a fourth filter that filters a signal of the fourth signal path, wherein the filter unit comprises a transmission filter part including the first filter and the third filter, and a reception filter part including the second filter and the fourth filter; and
a phase setting module configured to set phases of the filtered signals such that a first beam radiated through the first radiating elements and the second radiating elements and a second beam radiated through the third radiating elements and the fourth radiating elements are separated from each other in space,
wherein the first beam and the second beam have different polarization directions.