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

Claim 0:
1. A communication device comprising:
a first antenna element;
a second antenna element;
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 while the second antenna element is connected to the second port of the 180-degree hybrid circuit, and
wherein the 180-degree hybrid circuit is configured by aligning a first excitation opening adapted to a first electromagnetic-field mode and a second excitation opening adapted to a second electromagnetic-field mode in a T-shape manner.