A radiating system of a wireless device transmits and receives electromagnetic wave signals in a frequency region and comprises an external port, a radiating structure, and a radiofrequency system. The radiating structure includes: a ground plane layer with a connection point; a radiation booster with a connection point and being smaller than 1/30 of a free-space wavelength corresponding to a lowest frequency of the frequency region; and an internal port between the radiation booster connection point and the ground plane layer connection point. The radiofrequency system includes: a first port connected to the radiating structure's internal port; and a second port connected to the external port. An input impedance at radiating structure's disconnected internal port has a non-zero imaginary part across the frequency region. The radiofrequency system modifies impedance of the radiating structure to provide impedance matching to the radiating system within the frequency region at the external port.

A radiating system of a wireless device transmits and receives electromagnetic wave signals in a frequency region and comprises an external port, a radiating structure, and a radiofrequency system. The radiating structure includes: a ground plane layer with a connection point; a radiation booster with a connection point and being smaller than 1/30 of a free-space wavelength corresponding to a lowest frequency of the frequency region; and an internal port between the radiation booster connection point and the ground plane layer connection point. The radiofrequency system includes: a first port connected to the radiating structure's internal port; and a second port connected to the external port. An input impedance at radiating structure's disconnected internal port has a non-zero imaginary part across the frequency region. The radiofrequency system modifies impedance of the radiating structure to provide impedance matching to the radiating system within the frequency region at the external port.

A directional antenna network adapted to operate in at least one predetermined frequency band, which includes at least one pair of metal antennas formed by a first metal antenna and a second metal antenna, the second metal antenna being sequentially rotated by a predetermined angle of rotation relative to the first metal antenna, a load circuit, with each metal antenna connected to the load circuit, and a monopole antenna, having a central position in the antenna network, connected to the load circuit. The metal antennas and the monopole antenna are arranged on a ground plane and coupled, with the load circuit being parameterized to provide radiation, the monopole antenna having a destructive contribution of a magnetic transverse radiation mode to obtain radiation by the at least one pair of metal antennas of selected circular polarization.

A directional antenna network adapted to operate in at least one predetermined frequency band, which includes at least one pair of metal antennas formed by a first metal antenna and a second metal antenna, the second metal antenna being sequentially rotated by a predetermined angle of rotation relative to the first metal antenna, a load circuit, with each metal antenna connected to the load circuit, and a monopole antenna, having a central position in the antenna network, connected to the load circuit. The metal antennas and the monopole antenna are arranged on a ground plane and coupled, with the load circuit being parameterized to provide radiation, the monopole antenna having a destructive contribution of a magnetic transverse radiation mode to obtain radiation by the at least one pair of metal antennas of selected circular polarization.

An antenna element comprises one or more directors, a resonator, and a three dimensional ground assembly. Parts of the antenna element are arranged on three metal layers. A top layer has an unconnected metal bar which forms a beam director, a resonator and a top part of the ground assembly. The resonator is an integral piece substantially in the form of a loop connected to a feed line and a feed line terminal ending. The feed line terminal ending serves as the ground plane for the feed line as well as providing impedance matching from the external transceiver circuit to the resonator. The ground assembly includes a top layer ground connected to a plurality of metallized half cylindrical hole channels (or metallized via holes) which connect to a ground terminal in a bottom layer.

An antenna element comprises one or more directors, a resonator, and a three dimensional ground assembly. Parts of the antenna element are arranged on three metal layers. A top layer has an unconnected metal bar which forms a beam director, a resonator and a top part of the ground assembly. The resonator is an integral piece substantially in the form of a loop connected to a feed line and a feed line terminal ending. The feed line terminal ending serves as the ground plane for the feed line as well as providing impedance matching from the external transceiver circuit to the resonator. The ground assembly includes a top layer ground connected to a plurality of metallized half cylindrical hole channels (or metallized via holes) which connect to a ground terminal in a bottom layer.

An antenna device includes an antenna element, which is able to transmit and receive high-frequency signals of a plurality of frequency bands, and an antenna matching circuit. The antenna matching circuit includes an impedance converting circuit, which is connected to the antenna element side of the circuit, and a variable reactance circuit, which is connected to a feeder circuit side of the circuit. The impedance converting circuit includes a first inductance element and a second inductance element, which are transformer coupled with each other. The variable reactance circuit includes a reactance element, which is connected in parallel or series with the transmission/reception signal transmission path, and a switch that switches the connection state of the reactance element.

An antenna device includes an antenna element, which is able to transmit and receive high-frequency signals of a plurality of frequency bands, and an antenna matching circuit. The antenna matching circuit includes an impedance converting circuit, which is connected to the antenna element side of the circuit, and a variable reactance circuit, which is connected to a feeder circuit side of the circuit. The impedance converting circuit includes a first inductance element and a second inductance element, which are transformer coupled with each other. The variable reactance circuit includes a reactance element, which is connected in parallel or series with the transmission/reception signal transmission path, and a switch that switches the connection state of the reactance element.

An antenna apparatus includes a feeding terminal, a high-pass low-cut device, a first low-pass high-cut device, and an antenna body, where the high-pass low-cut device is electrically connected in series between a first free end of the antenna body and the feeding terminal, and the first low-pass high-cut device is electrically connected in series between a second free end of the antenna body and the feeding terminal.

An antenna apparatus includes a feeding terminal, a high-pass low-cut device, a first low-pass high-cut device, and an antenna body, where the high-pass low-cut device is electrically connected in series between a first free end of the antenna body and the feeding terminal, and the first low-pass high-cut device is electrically connected in series between a second free end of the antenna body and the feeding terminal.