Wideband antennas and access points including such antennas

An antenna, comprising:

• a printed circuit board that includes a central feed point and a plurality of antenna elements formed therein, the antenna elements extending radially from the central feed point, where each antenna element comprises:
• a feed line that is coupled to the central feed point, the feed line including a feed conductor and a ground conductor;
• at least two dipole radiators coupled to the feed line, each dipole radiator comprising a first dipole arm that is coupled to the feed conductor and a second dipole arm that is coupled to the ground conductor,
• wherein a first length of a first of the dipole radiators is different than a second length of a second of the dipole radiators, and
• wherein each of the dipole radiators is fed in-phase,
• wherein the at least two dipole radiators comprise an outermost dipole radiator and an innermost dipole radiator, the outermost dipole radiator positioned farther from the central feed point than the innermost dipole radiator and the outermost dipole radiator being longer than the innermost dipole radiator,
• wherein the antenna further comprises either a plurality of directors or a plurality of reflectors, where each director or reflector is part of a respective one of the antenna elements, the directors or reflectors radially arranged about the central feed point and positioned outwardly of the respective outermost dipole radiators, wherein each director, if provided, is shorter than a respective one of the outermost dipole radiators and each reflector, if provided, is longer than a respective one of the outermost dipole radiators, wherein each director or reflector is coupled to a ground reference through a respective switch.

An antenna, comprising:

• a plurality of antenna elements extending radially from a central region, where each antenna element comprises:
• a feed line that is coupled to a power divider, the feed line including a feed conductor and a ground conductor;
• and
• at least two dipole radiators coupled to the feed line, each dipole radiator comprising a first dipole arm that extends in a first direction from the feed line and a second dipole arm that extends in a second direction from the feed line that is different than the first direction,
• wherein the feed conductor is coupled to each first dipole arm, and the ground conductor is coupled to each second dipole arm, and
• wherein a first length of a first of the dipole radiators is different than a second length of a second of the dipole radiators,
• wherein the at least two dipole radiators comprise an outermost dipole radiator and an innermost dipole radiator, the outermost dipole radiator positioned farther from the central region than the innermost dipole radiator and the outermost dipole radiator being longer than the innermost dipole radiator, and
• the antenna further comprising a plurality of directors, where each director is part of a respective one of the antenna elements, the directors radially arranged about the central region and positioned outwardly of the respective outermost dipole radiators, wherein each director is shorter than the outermost dipole radiator of the antenna element that the director is part of, wherein each director is coupled to a ground reference through a respective switch.

An antenna, comprising:

• a plurality of antenna elements extending radially from a central region, where each antenna element comprises:
• a feed line that is coupled to a power divider, the feed line including a feed conductor and a ground conductor;
• and
• at least two dipole radiators coupled to the feed line, each dipole radiator comprising a first dipole arm that extends in a first direction from the feed line and a second dipole arm that extends in a second direction from the feed line that is different than the first direction,
• wherein the feed conductor is coupled to each first dipole arm, and the ground conductor is coupled to each second dipole arm, and
• wherein a first length of a first of the dipole radiators is different than a second length of a second of the dipole radiators,
• wherein the at least two dipole radiators comprise an outermost dipole radiator and an innermost dipole radiator, the outermost dipole radiator positioned farther from the central region than the innermost dipole radiator and the outermost dipole radiator being longer than the innermost dipole radiator, and
• the antenna further comprising a plurality of reflectors, where each reflector is part of a respective one of the antenna elements, the reflectors radially arranged about the central region and positioned outwardly of the respective outermost dipole radiators, wherein each reflector is longer than the outermost dipole radiator of the antenna element that the reflector is part of, wherein each reflector is coupled to a ground reference through a respective switch.