Proximity type antenna and radio communication device

A radio communication device including a proximity type antenna wherein the proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern;
• the conductive plate having an aperture and a slit extending from the aperture to an end of the conductive plate;
• at least part of the aperture being arranged at a position of overlapping either the antenna pattern or the region surrounded by the inner periphery of the antenna pattern in plan view.

A proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having an aperture and a slit extending from the aperture to an end of the conductive plate;
• the antenna pattern being arranged at a position of not overlapping the aperture in plan view but overlapping at least part of the slit in plan view.

A radio communication device including a proximity type antenna wherein the proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having an aperture and a slit extending from the aperture to an end of the conductive plate;
• the antenna pattern being arranged at a position of not overlapping the aperture in plan view but overlapping at least part of the slit in plan view.

A proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate being provided at an end part thereof with a slit having a constant width or an inwardly tapered slit;
• the antenna pattern being arranged at a position of overlapping at least part of the slit in plan view.

A radio communication device including a proximity type antenna wherein the proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate being provided at an end part thereof with a slit having a constant width or an inwardly tapered slit;
• the antenna pattern being arranged at a position of overlapping at least part of the slit in plan view.

A proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having a relatively wide first slit arranged at an end part and a relatively narrow second slit arranged at the first slit;
• the width of the second slit being smaller than the width of the antenna pattern;
• the antenna pattern being arranged across the second slit in plan view.

A radio communication device including a proximity type antenna wherein the proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having a relatively wide first slit arranged at an end part and a relatively narrow second slit arranged at the first slit;
• the width of the second slit being smaller than the width of the antenna pattern;
• the antenna pattern being arranged across the second slit in plan view.

A proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having a first aperture, a slit extending from the first aperture to an end of the conductive plate and a second aperture surrounded by the conductive plate along all of its periphery;
• the antenna pattern being arranged at a position of overlapping at least either of at least part of the first aperture or at least part of the slit in plan view.

A radio communication device including a proximity type antenna wherein the proximity type antenna comprising:

• an antenna pattern that wirelessly communicates with an external communication device by magnetic coupling;
• and
• a conductive plate arranged near the antenna pattern in a state of being insulated from the antenna pattern;
• the conductive plate having a first aperture, a slit extending from the first aperture to an end of the conductive plate and a second aperture surrounded by the conductive plate along all of its periphery;
• the antenna pattern being arranged at a position of overlapping at least either of at least part of the first aperture or at least part of the slit in plan view.