US 12,341,237 B2
Multi-band base station antenna having improved isolation characteristics
Bayanmunkh Enkhbayar, Incheon (KR); Ho-Yong Kim, Incheon (KR); Nyambayar Jargalsaikhan, Incheon (KR); and Muhammad Sajjad Ahmad, Incheon (KR)
Assigned to ACE TECHNOLOGIES CORPORATION, Incheon (KR)
Appl. No. 18/257,567
Filed by ACE TECHNOLOGIES CORPORATION, Incheon (KR)
PCT Filed Dec. 6, 2021, PCT No. PCT/KR2021/018348
§ 371(c)(1), (2) Date Jun. 14, 2023,
PCT Pub. No. WO2022/131648, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 10-2020-0175182 (KR), filed on Dec. 15, 2020.
Prior Publication US 2024/0113418 A1, Apr. 4, 2024
Int. Cl. H01Q 5/48 (2015.01); H01Q 1/24 (2006.01); H01Q 1/52 (2006.01); H01Q 5/42 (2015.01); H01Q 9/16 (2006.01); H01Q 15/14 (2006.01)
CPC H01Q 1/246 (2013.01) [H01Q 1/521 (2013.01); H01Q 5/42 (2015.01); H01Q 9/16 (2013.01); H01Q 15/14 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A multi-band base station antenna, comprising:
a reflector;
a plurality of high-band radiators arranged on the reflector; and
a plurality of low-band radiators arranged on the reflector,
wherein each of the plurality of low-band radiators comprises:
a radiation substrate;
a first dipole radiator including a first+dipole arm and a first−dipole arm formed on the radiation substrate;
a second dipole radiator including a second+dipole arm and a second−dipole arm formed on the radiation substrate; and
a metal coupler coupled to a lower portion of the radiation substrate, and
wherein the metal coupler comprises: a first coupling patch located below the first+dipole arm; a second coupling patch located below the first−dipole arm; a third coupling patch located below the second+dipole arm; a fourth coupling patch located below the second−dipole arm; a ring-shaped patch portion with a slot formed in the center; and first to fourth supporters vertically protruding from the ring-shaped patch portion, and
wherein each of the first to fourth coupling patches is coupled to the first to fourth supporters, respectively.