The present disclosure discloses an isolation structure of a large array antenna and an antenna. According to an embodiment of the present disclosure, a boundary plate is disposed between array elements of a large array antenna. The boundary plate has hollowed-out areas and is perpendicular to a plane where the array elements are located. The hollowed-out areas of the boundary plate form sub-areas with staggered patterns in the boundary plate to allow a coupling path of signals of array elements generated at the boundary plate and a radiation path of the array elements to counteract with each other, so as to weaken the coupling between the array elements and improve the isolation between the array elements, especially the isolation between 3-5 db array elements.

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.

A high gain of an antenna is achieved while suppressing interference of a radio wave from an RFIC. A plurality of serial-type radiation element rows 41 are arranged in parallel. A parallel feed line 45 branches from a feed terminal of an electronic component 11, and connects radiation elements 42, at ends of the serial-type radiation element row 41 farthest from the electronic component 11, to the feed terminal of the electronic component 11. All of the serial-type radiation element rows have an identical path length, along the parallel feed line 45, from each of the radiation elements 42 at the ends farthest from the electronic component 11 to the feed terminal of the electronic component 11. An amplifier 61 is connected to the parallel feed line on a halfway portion of the parallel feed line 45. The amplifier 61 amplifies a signal passing through the parallel feed line 45.

A high gain of an antenna is achieved while suppressing interference of a radio wave from an RFIC. A plurality of serial-type radiation element rows 41 are arranged in parallel. A parallel feed line 45 branches from a feed terminal of an electronic component 11, and connects radiation elements 42, at ends of the serial-type radiation element row 41 farthest from the electronic component 11, to the feed terminal of the electronic component 11. All of the serial-type radiation element rows have an identical path length, along the parallel feed line 45, from each of the radiation elements 42 at the ends farthest from the electronic component 11 to the feed terminal of the electronic component 11. An amplifier 61 is connected to the parallel feed line on a halfway portion of the parallel feed line 45. The amplifier 61 amplifies a signal passing through the parallel feed line 45.

An object is to advantageously control a phase of an electromagnetic wave with high efficiency in wide bandwidth. A phase control device includes a two dimensional array of a plurality of cube units that are configured to shift a phase of an electromagnetic wave passing through the cube units. The cube units include at least two basic structures including different number of stacked metal layers separated from each other.

An object is to advantageously control a phase of an electromagnetic wave with high efficiency in wide bandwidth. A phase control device includes a two dimensional array of a plurality of cube units that are configured to shift a phase of an electromagnetic wave passing through the cube units. The cube units include at least two basic structures including different number of stacked metal layers separated from each other.

An antenna array includes one or more substrates and four individual antennas in a slant formation to improve radiation pattern independence. In various embodiments, a novel slanted antenna array configuration is disclosed where one of the four antennas is orthogonal to two of the remaining three antennas. In some embodiments, two separate substrates and a tapered dielectric spacer are used to provide a larger variety of slant formations.

An antenna array includes one or more substrates and four individual antennas in a slant formation to improve radiation pattern independence. In various embodiments, a novel slanted antenna array configuration is disclosed where one of the four antennas is orthogonal to two of the remaining three antennas. In some embodiments, two separate substrates and a tapered dielectric spacer are used to provide a larger variety of slant formations.

A microstrip collinear array includes a bearing member, two first antenna assemblies, two second antenna assemblies, a first connecting line, and a second connecting line. The two first antenna assemblies are juxtaposed on the bearing member. Each of the first antenna assemblies includes several first planar antennas. The two second antenna assemblies are juxtaposed on the bearing member and are respectively and correspondingly located on an opposite side of the two first antenna assemblies. Each of the second antenna assemblies includes several second planar antennas. The first connecting line and the second connecting line are disposed on the bearing member. The second connecting line is located on an opposite side of the first connecting line and is electrically connected to the first connecting line. The first connecting line is electrically connected to the first antenna assemblies. The second connecting line is electrically connected to the second antenna assemblies.