An antenna system. The system includes a feed network with first input/output terminals and second output/input terminals, and antenna elements forming an array. In a first configuration: each of the second plurality of output/input terminals is connected to one of the antenna elements, the array operating according to a different radiation pattern based on which one of the first plurality of input/output terminals carries a signal into the feed network. In a second configuration: a selected antenna element is disconnected from the second plurality of output/input terminals and receives a direct signal, bypassing the feed network, and operates according to its independent radiation pattern. Also, in the second configuration each remaining antenna element is disconnected from the second plurality of output/input terminals and connected directly to a detuning network, causing these antenna elements to have a minimal effect on the independent radiation pattern of the selected antenna element.

An antenna with pin header is provided, which may include a substrate, a feed point, a radiator and a metallic pin header. The feed point may be disposed on the substrate. The radiator may be printed on the substrate and connected to the feed point. The metallic pin header may penetrate through the radiator and the substrate. The metallic pin header may be connected to the feed point via the radiator, and the radiator and the metallic pin header may have a common feedline, whereby the metallic pin header can enhance the gain pattern, in the direction which the metallic pin header points in, of the radiator.

A surface wave launcher surrounds and provides structure complimentary to an antenna and converts (transforms) a near field produced by the antenna into a cylindrical surface wave structure with a strong electric or magnetic field component parallel to a launching interface and propagating two-dimensionally from the launcher. The surface wave launcher leverages the interface found along ocean-air or ground-air to increase a field strength transmitted for a given antenna size and power available. The surface wave launcher maintains a relatively small structure compared to wavelength offering mobility to a very low frequency transmitter. Due to localization of the surface wave energy near the interface, communications using the surface wave retain a desirable low probability of detection.

The disclosure relates to an array antenna, and more specifically, the array antenna configured by arranging a plurality of antenna elements at close positions. An array antenna is provided. The array antenna includes a first antenna operating in a first mode, and a second antenna operating in a second mode, wherein a correlation between an electric field of the first mode and an electric field of the second mode falls below a first threshold which is predetermined, or a correlation between a magnetic field of the first mode and a magnetic field of the second mode falls below a second threshold which is predetermined.

The disclosure relates to an array antenna, and more specifically, the array antenna configured by arranging a plurality of antenna elements at close positions. An array antenna is provided. The array antenna includes a first antenna operating in a first mode, and a second antenna operating in a second mode, wherein a correlation between an electric field of the first mode and an electric field of the second mode falls below a first threshold which is predetermined, or a correlation between a magnetic field of the first mode and a magnetic field of the second mode falls below a second threshold which is predetermined.

Multi-band base station antenna units include a first base station antenna that has a first housing, a first radome extending forwardly from the first housing, a first vertically-disposed linear array of low-band radiating elements mounted behind the first radome and a second vertically-disposed linear array of mid-band radiating elements mounted behind the first radome. These base station antenna units also include a second base station antenna that has a second housing, a second radome extending forwardly from the second housing and a third array of high-band radiating elements mounted behind the second radome. The first and second base station antennas are mounted in a vertically stacked arrangement and are configured to be mounted as a single structure.

Multi-band base station antenna units include a first base station antenna that has a first housing, a first radome extending forwardly from the first housing, a first vertically-disposed linear array of low-band radiating elements mounted behind the first radome and a second vertically-disposed linear array of mid-band radiating elements mounted behind the first radome. These base station antenna units also include a second base station antenna that has a second housing, a second radome extending forwardly from the second housing and a third array of high-band radiating elements mounted behind the second radome. The first and second base station antennas are mounted in a vertically stacked arrangement and are configured to be mounted as a single structure.

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.

An antenna device for vehicle (10A) includes an antenna base (100), an antenna case (600) forming an accommodation space together with the antenna base (100), a first monopole antenna (210) accommodated in the accommodation space, and a first parasitic element (300) provided above the first monopole antenna (210).

The present disclosure relates to base station antennas. One example base station antenna includes at least two antennas, at least two outer cover structures, a fastening assembly, a connection assembly, and an upper cover, and each antenna is independently packaged in a radome. The fastening assembly includes a pole and a base. A bottom of the pole is mounted on the base. The connection assembly includes an antenna connection assembly, an outer cover connection assembly, and a pole connection assembly. The pole connection assembly is disposed on the pole, a top of the antenna is connected to the pole by using the antenna connection assembly and the pole connection assembly, and a bottom of the antenna is fastened on the bottom of the pole. Each of the outer cover structures is connected to the pole by using the outer cover connection assembly and the pole connection assembly.