US 11,670,865 B2
Butler-based quasi-omni MIMO antenna
Lin-Ping Shen, Ontario (CA); and Seyed Hamidreza Jamali, Ontario (CA)
Assigned to COMMUNICATION COMPONENTS ANTENNA INC., Kanata (CA)
Filed by COMMUNICATION COMPONENTS ANTENNA INC., Kanata (CA)
Filed on Apr. 19, 2022, as Appl. No. 17/724,095.
Application 17/724,095 is a division of application No. 16/441,858, filed on Jun. 14, 2019, granted, now 11,336,028.
Prior Publication US 2022/0255236 A1, Aug. 11, 2022
Int. Cl. H01Q 21/00 (2006.01); H01Q 25/00 (2006.01); H01Q 1/24 (2006.01); H01Q 21/20 (2006.01); H01Q 1/42 (2006.01); H01Q 3/40 (2006.01); H01Q 5/40 (2015.01); H01Q 15/14 (2006.01); H01Q 21/24 (2006.01); H01Q 21/26 (2006.01); H01Q 19/10 (2006.01)
CPC H01Q 21/0006 (2013.01) [H01Q 1/246 (2013.01); H01Q 1/42 (2013.01); H01Q 3/40 (2013.01); H01Q 5/40 (2015.01); H01Q 15/14 (2013.01); H01Q 19/108 (2013.01); H01Q 21/205 (2013.01); H01Q 21/24 (2013.01); H01Q 21/26 (2013.01); H01Q 25/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An omnidirectional MIMO antenna system comprising:
a multi-panel antenna, each panel including a plurality of antenna elements;
a plurality of beam forming networks employing Butler matrices, each Butler matrix having one less the number of input ports than output ports, wherein the total number of said input ports of said Butler matrices is equal to the number of ports of said MIMO antenna, each of said input ports receiving the same signal; and
each of said output ports of each of said Butler matrices is coupled to an antenna element within the plurality of said antenna elements, such that said multi-panel antenna exhibits a quasi-omnidirectional beam pattern.