Provided are wavelength based V2X antennas, and related antenna systems and method, which can include a first antenna having a first wavelength and a second antenna having a second antenna. Some antenna systems control a wavelength of a signal for transmission using one of the first antenna and the second antenna.

Novel and advantageous antennas are provided. A multi-functional antenna can morph in order to change geometrical shape and thereby change its antenna radiation characteristics. Such characteristics can include radiation pattern, bandwidth, beamwidth, operational frequency, and directivity. The antenna can therefore be multifunctional such that one single antenna can serve multiple applications.

An antenna for harvesting RF energy includes a radiator; and a ground plane onto which the radiator is supported. Further, the antenna includes a vertical ground plane that is formed on the ground plane in a direction parallel to the radiator at a location spaced by a predetermined distance from the radiator.

An antenna for harvesting RF energy includes a radiator; and a ground plane onto which the radiator is supported. Further, the antenna includes a vertical ground plane that is formed on the ground plane in a direction parallel to the radiator at a location spaced by a predetermined distance from the radiator.

Ultra-wideband (UWB) antennas are provided including a printed circuit board; a radiating element coupled to the printed circuit board and substantially perpendicular thereto; and radio frequency (RF) electronics associated with the antenna integrated with the printed circuit board. Related enclosures and systems are also provided.

Ultra-wideband (UWB) antennas are provided including a printed circuit board; a radiating element coupled to the printed circuit board and substantially perpendicular thereto; and radio frequency (RF) electronics associated with the antenna integrated with the printed circuit board. Related enclosures and systems are also provided.

Twin-beam base station antennas are provided. A twin-beam base station antenna includes a plurality of vertical columns of radiating elements that are configured to transmit radio frequency signals in a frequency band. The radiating elements have bent metal radiator arms including tip portions that face respective center axes of the radiating elements.

Twin-beam base station antennas are provided. A twin-beam base station antenna includes a plurality of vertical columns of radiating elements that are configured to transmit radio frequency signals in a frequency band. The radiating elements have bent metal radiator arms including tip portions that face respective center axes of the radiating elements.

A base station antenna is provided. The base station antenna includes a reflector and a plurality of vertical columns of radiating elements that are on a surface of the reflector and are configured to transmit radio frequency (RF) signals in a frequency band. Facing radiator arms of respective radiating elements in adjacent columns among the plurality of vertical columns have tip portions that protrude in different directions relative to one another, with reference to the surface of the reflector.

A base station antenna is provided. The base station antenna includes a reflector and a plurality of vertical columns of radiating elements that are on a surface of the reflector and are configured to transmit radio frequency (RF) signals in a frequency band. Facing radiator arms of respective radiating elements in adjacent columns among the plurality of vertical columns have tip portions that protrude in different directions relative to one another, with reference to the surface of the reflector.