This disclosure presents an antenna device including one or more arrays of radiating elements, wherein each array may be an end-fire array. The antenna device comprises an array of N radiating elements (N>1) arranged on a common axis. Each radiating element is configured to radiate a radio wave in response to a RF signal fed to the respective radiating element. A reflector is arranged on the common axis to reflect the N radio waves into a main radiating direction. The antenna device comprises a feed structure to feed a RF signal to each radiating element. The RF signal at each radiating element has a respective phase difference relative to the RF signal at a first radiating element. The feed structure comprises one or more phase shifters, for one or more or all radiating elements, to set the phase difference of the RF signal at the respective radiating element.

A wideband bisector antenna has a plurality of antenna elements disposed in horizontal rows, a left beam bi-sector array segment at one section of the antenna comprising a plurality of the horizontal rows of elements, and a right beam bi-sector array segment at one section of the antenna comprising a plurality of the horizontal rows of elements. At least one horizontal row on the antenna is shared in both the left beam bi-sector array segment and the right beam bi-sector array segment.

A multiband antenna system comprises a first massive multiple input multiple output (mMIMO) antenna array comprising a plurality of first antenna elements for use in a first frequency band and at least a second antenna array comprising a plurality of second antenna elements for use in a second frequency band lower than the first frequency band. The second antenna array is at least partially interleaved with the first mMIMO antenna array. The multiband antenna system further includes a distribution network for distributing input and/or output signals of the antenna elements of the second antenna array arranged in a distribution layer, and a transition device.

An antenna system includes a composite antenna including a first antenna element disposed above a ground plane, the first antenna element being operatively coupled to a first signal source providing a first signal, the first antenna element being configured to radiate the first signal provided by the first signal source; and a second antenna element disposed above the first antenna element, the second antenna element being operatively coupled to a second signal source providing a second signal, the second antenna element being configured to radiate the second signal provided by the second signal source, the first signal and the second signal being adjusted to set a beamwidth and a directivity of a beam pattern of a combined beam radiated by the composite antenna.

A multi-band base station antenna includes a linear array having a plurality of radiating elements arranged in a vertical direction. The radiating elements comprise first and second sets of radiating elements that each include one or more radiating elements. The first set of radiating elements operates in both first and second frequency bands, while the second set of radiating elements operates in the first frequency band but not in the second frequency band.

A multi-band base station antenna includes a linear array having a plurality of radiating elements arranged in a vertical direction. The radiating elements comprise first and second sets of radiating elements that each include one or more radiating elements. The first set of radiating elements operates in both first and second frequency bands, while the second set of radiating elements operates in the first frequency band but not in the second frequency band.

An antenna module includes a feeding end, multiple first forked radiators, and multiple connecting parts. The first forked radiators are disposed side by side. The connecting parts respectively extend from the feeding end to the first forked radiators. The feeding end, the first forked radiators, and the connecting parts are located on a same plane. The antenna module resonates at a frequency band, and a path length from the feeding end to an end of each of the forked radiators through the corresponding connecting part is ¼ wavelength of the frequency band.

An antenna module includes a feeding end, multiple first forked radiators, and multiple connecting parts. The first forked radiators are disposed side by side. The connecting parts respectively extend from the feeding end to the first forked radiators. The feeding end, the first forked radiators, and the connecting parts are located on a same plane. The antenna module resonates at a frequency band, and a path length from the feeding end to an end of each of the forked radiators through the corresponding connecting part is ¼ wavelength of the frequency band.

A wave guide for an array antenna, can include: a mounting portion (44) configured to receive a plurality of radar antennas of the array antenna, the mounting portion comprising a respective receiving position for each radar antenna of the array antenna; a set of elongate members spaced from the mounting portion, each elongate member including a series of apertures arranged along the elongate member wherein each elongate member (20, 22) extends orthogonally to an adjacent elongate member of the set; and a plurality of guide channels, each guide channel extending between a respective one or more receiving positions of the mounting portion and a respective one or more apertures of the elongate members (20, 22) to connect, in use, one or more of the radar antennas to one or more of the apertures.

A wave guide for an array antenna, can include: a mounting portion (44) configured to receive a plurality of radar antennas of the array antenna, the mounting portion comprising a respective receiving position for each radar antenna of the array antenna; a set of elongate members spaced from the mounting portion, each elongate member including a series of apertures arranged along the elongate member wherein each elongate member (20, 22) extends orthogonally to an adjacent elongate member of the set; and a plurality of guide channels, each guide channel extending between a respective one or more receiving positions of the mounting portion and a respective one or more apertures of the elongate members (20, 22) to connect, in use, one or more of the radar antennas to one or more of the apertures.