Coupler and electronic apparatus

A coupler configured to transmit and receive an electromagnetic wave by electromagnetic coupling between the coupler and another coupler, the coupler comprising:

• a substrate comprising a first surface and a second surface;
• a line-shaped coupling element on the first surface of the substrate, the coupling element comprising a first open end and a second open end;
• a ground plane on the first surface of the substrate;
• a feeding element on the first surface of the substrate, electrically connecting the coupling element and a feed point on the first surface, the feeding element comprising a first end electrically connected to an intermediate portion of the coupling element between the first open end and the second open end, and a second end electrically connected to the feed point;
• and
• a short circuiting element on the second surface of the substrate, electrically connecting the coupling element and the ground plane, the short circuiting element comprising:
• a first element extending between the first surface and the second surface, the first element comprising:
• a third end electrically connected to the intermediate portion of the coupling element on the first surface, and
• a fourth end electrically connected to the second surface;
• and
• a second element on the second surface,
• the second element comprising:
• a fifth end electrically connected to the fourth end of the first element, and
• a sixth end electrically connected to the ground plane on the first surface.

An electronic apparatus comprising a coupler configured to transmit and receive an electromagnetic wave by electromagnetic coupling between the coupler and another coupler, the electronic apparatus comprising:

• a housing;
• a communication module in the housing and electrically connected to the coupler;
• and
• a processor in the housing and configured to execute an application configured to control communication via the communication module,
• wherein the coupler comprises:
• a substrate comprising a first surface and a second surface;
• a line-shaped coupling element on the first surface of the substrate and comprising a first open end and a second open end;
• a ground plane on the first surface of the substrate;
• a feeding element on the first surface of the substrate and electrically connecting the coupling element and a feed point on the first surface, the feeding element comprising a first end electrically connected to an intermediate portion of the coupling element between the first open end and the second open end, and a second end electrically connected to the feed point;
• and
• a short circuiting element on the second surface of the substrate and electrically connecting the coupling element and the ground plane, the short circuiting element comprising:
• a first element extending between the first surface and the second surface, the first element comprising a third end electrically connected to the intermediate portion of the coupling element on the first surface, and a fourth end electrically connected to the second surface;
• and
• a second element on the second surface, the second element comprising a fifth end electrically connected to the fourth end of the first element and a sixth end electrically connected to the ground plane on the first surface.