US 12,266,868 B2
Method and apparatus for isolation enhancement and pattern improvement of high frequency sub-arrays in dense multi-band omni directional small cell antennas
Nasrin Hojjat, Ottawa (CA); Paul Clarke, Kanata (CA); and Zouhair Briqech, Ottawa (CA)
Assigned to Communication Components Antenna Inc., Ontario (CA)
Filed by Communication Components Antenna Inc., Kanata (CA)
Filed on Sep. 1, 2021, as Appl. No. 17/463,991.
Claims priority of provisional application 63/074,328, filed on Sep. 3, 2020.
Prior Publication US 2022/0109237 A1, Apr. 7, 2022
Int. Cl. H01Q 5/30 (2015.01); H01Q 1/24 (2006.01); H01Q 15/16 (2006.01)
CPC H01Q 5/30 (2015.01) [H01Q 1/246 (2013.01); H01Q 15/161 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An omni-directional small cell base station antenna comprising:
at least one array of a first frequency on a lower portion of said antenna;
at least one second array of a second frequency on an upper portion of said antenna;
at least one third array of a third frequency on said upper portion of said antenna,
wherein said second frequency is higher than said first frequency, and wherein said third frequency is higher than said second frequency;
wherein said at least one second array at a second frequency includes a plurality of reflector plates with antenna elements of said second frequency thereon, and wherein said at least one third array at a third frequency includes a plurality of reflector plates with antenna elements of said third frequency thereon,
wherein said reflector plates of said at least one second array are interspersed between said reflector plates of said at least one third array such that said reflector plates of said second and third arrays alternate around the circumference of said upper portion of said antenna; and
wherein said omni-directional small cell base station antenna further having at least a first upper wave guide plate above said upper portion of said antenna, and at least a second lower wave guide plate below said upper portion of said antenna, said second lower wave guide plate dividing said upper and lower portions of said antenna.