Antenna element, array antenna, communication unit, mobile object, and base station

An array antenna comprising:

• a plurality of antenna elements;
• and
• an antenna board on which the plurality of antenna elements are positioned,
• wherein the antenna element includes:
• a first conductor and a second conductor that extend along a second plane and are positioned away from each other along a first axis that intersects the second plane;
• a third conductor that extends along a first plane including the first axis and is positioned between the first conductor and the second conductor;
• a fourth conductor that extends along the first plane, is electrically connected to the first conductor and the second conductor, and is positioned away from the third conductor;
• a feeding line that is electrically connected to the third conductor;
• and
• a filter that is connected to the feeding line, and
• the filter is positioned in such a manner as to overlap the fourth conductor.

A communication unit comprising:

• an array antenna including a plurality of antenna elements and an antenna board on which the plurality of antenna elements are positioned;
• and
• a controller,
• wherein the antenna element includes:
• a first conductor and a second conductor that extend along a second plane and are positioned away from each other along a first axis that intersects the second plane;
• a third conductor that extends along a first plane including the first axis and is positioned between the first conductor and the second conductor;
• a fourth conductor that extends along the first plane, is electrically connected to the first conductor and the second conductor, and is positioned away from the third conductor;
• a feeding line that is electrically connected to the third conductor;
• and
• a filter that is connected to the feeding line,
• the filter is positioned in such a manner as to overlap the fourth conductor, and
• the controller is connected to the filter.

A mobile object comprising:

• a communication unit,
• wherein the communication unit includes:
• an array antenna including a plurality of antenna elements and an antenna board on which the plurality of antenna elements are positioned;
• and
• a controller,
• the antenna element includes:
• a first conductor and a second conductor that extend along a second plane and are positioned away from each other along a first axis that intersects the second plane;
• a third conductor that extends along a first plane including the first axis and is positioned between the first conductor and the second conductor;
• a fourth conductor that extends along the first plane, is electrically connected to the first conductor and the second conductor, and is positioned away from the third conductor;
• a feeding line that is electrically connected to the third conductor;
• and
• a filter that is connected to the feeding line,
• the filter is positioned in such a manner as to overlap the fourth conductor, and
• the controller is connected to the filter.

A base station comprising:

• a communication unit,
• wherein the communication unit includes:
• an array antenna including a plurality of antenna elements and an antenna board on which the plurality of antenna elements are positioned;
• and
• a controller,
• the antenna element includes:
• a first conductor and a second conductor that extend along a second plane and are positioned away from each other along a first axis that intersects the second plane;
• a third conductor that extends along a first plane including the first axis and is positioned between the first conductor and the second conductor;
• a fourth conductor that extends along the first plane, is electrically connected to the first conductor and the second conductor, and is positioned away from the third conductor;
• a feeding line that is electrically connected to the third conductor;
• and
• a filter that is connected to the feeding line,
• the filter is positioned in such a manner as to overlap the fourth conductor, and
• the controller is connected to the filter.