US 11,749,876 B2
Multimode high-isolation antenna system
Ming Zheng, Santa Clara, CA (US); and Peter Joseph Bevelacqua, Sunnyvale, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on May 13, 2022, as Appl. No. 17/743,600.
Application 17/743,600 is a continuation of application No. 16/924,622, filed on Jul. 9, 2020, granted, now 11,335,990.
Claims priority of provisional application 62/908,269, filed on Sep. 30, 2019.
Prior Publication US 2022/0271417 A1, Aug. 25, 2022
Int. Cl. H01Q 5/22 (2015.01); H01Q 1/22 (2006.01); H01Q 1/24 (2006.01); H01Q 9/04 (2006.01)
CPC H01Q 1/2283 (2013.01) [H01Q 1/243 (2013.01); H01Q 5/22 (2015.01); H01Q 9/0421 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A multimode antenna system comprising:
a printed circuit board;
a first antenna connected to the printed circuit board; and
a second antenna connected to the printed circuit board, the second antenna being approximately 90 degrees out of phase from the first antenna,
wherein at least one of the first antenna or the second antenna comprises:
an inverted-F antenna;
a first loop structure substantially aligned with the inverted-F antenna; and
a second loop structure positioned adjacent to the inverted-F antenna, the second loop structure and the inverted-F antenna sharing a connection point to the printed circuit board.