Patent ID: 11862862
Assignee: NEC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A communication device comprising:
a first communicator coupled with a first antenna element and a second antenna element;
a second communicator coupled with a third antenna element and a fourth antenna element;
a third communicator coupled with a fifth antenna element and a sixth antenna element;
a first connector configured to connect the first communicator and the second communicator together;
a second connector configured to connect the second communicator and the third communicator together; and
a switch configured to switch over a connection between the first communicator and the second communicator and another connection between the first communicator and the third communicator,
wherein the first communicator, the second communicator, and the third communicator have a same configuration including a 180-degree hybrid circuit having a first port configured to generate a sum signal from a plurality of input signals and a second port configured to generate a difference signal from the plurality of input signals, a first phase shifter coupled with the 180-degree hybrid circuit to carry out a phase shift by a first phase value, and a second phase shifter coupled with the 180-degree hybrid circuit to carry out a phase shift by a second phase value,
wherein the first antenna element is connected to the first port of the 180-degree hybrid circuit via a first terminal of the first communicator while the second antenna element is connected to the second port of the 180-degree hybrid circuit via a second terminal of the first communicator,
wherein the third antenna element is connected to the first port of the 180-degree hybrid circuit via a first terminal of the second communicator while the fourth antenna element is connected to the second port of the 180-degree hybrid circuit via a second terminal of the second communicator,
wherein the fifth antenna element is connected to the first port of the 180-degree hybrid circuit via a first terminal of the third communicator while the sixth antenna element is connected to the second port of the 180-degree hybrid circuit via a second terminal of the third communicator,
wherein in the first communicator, the first phase shifter and the second phase shifter are commonly connected to a third terminal of the first communicator,
wherein in the second communicator, the first phase shifter and the second phase shifter are commonly connected to a third terminal of the second communicator,
wherein in the third communicator, the first phase shifter and the second phase shifter are commonly connected to a third terminal of the third communicator,
wherein the first connector is connected between the second terminal of the first communicator and the second terminal of the second communicator via the switch,
wherein the second connector is connected between the second terminal of the second communicator and the second terminal of the third communicator via the switch, and
wherein the switch is configured to switch over a connection between the second terminal of the first communicator and the second terminal of the second communicator and another connection between the second terminal of the first communicator and the second terminal of the third communicator.