US 12,438,563 B2
Communications device
Francois Sittler, Thorigne-Fouillard (FR)
Assigned to STMicroelectronics (Grand Ouest) SAS, Le Mans (FR)
Filed by STMicroelectronics (Grand Ouest) SAS, Le Mans (FR)
Filed on Oct. 10, 2022, as Appl. No. 17/962,961.
Claims priority of application No. 2112599 (FR), filed on Nov. 26, 2021.
Prior Publication US 2023/0170922 A1, Jun. 1, 2023
Int. Cl. H04B 1/00 (2006.01)
CPC H04B 1/0067 (2013.01) [H04B 1/0064 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A communication device, comprising:
a first antenna port, a second antenna port, and a third antenna port;
a first communication circuit coupled to the first antenna port;
a switch comprising a first terminal, a second terminal, and a third terminal, the first terminal coupled to the second antenna port, the second terminal coupled to the third antenna port, the switch configured to switch between a first state in which the first terminal is coupled to the second terminal and a second state in which the first terminal is coupled to the third terminal;
a second communication circuit coupled to the third terminal; and
a linking transmission line selectively couplable between the first antenna port and the third antenna port,
wherein, in a first configuration, the linking transmission line is coupled between the first antenna port and the third antenna port to enable a single-antenna operation mode where the first communication circuit and the second communication circuit share a first antenna coupled to the first antenna port, and
wherein, in a second configuration, the linking transmission line is uncoupled from at least one of the first antenna port or the third antenna port to enable a dual-antenna operation mode where the first communication circuit communicates via the first antenna coupled to the first antenna port and the second communication circuit communicates via a second antenna coupled to the second antenna port.