A wireless device using a radiating system able to operate in more than one communication system features compact dimensions and comprises a radiating structure that contains a compact booster arrangement that comprises first and second boosters, arranged in a configuration such that the boosters are not concatenated between them, i.e., not being placed one next to each other. One of the boosters comprises a slot or a gap in a ground plane layer and another of the boosters comprises at least a conductive part or element connected at a point to an additional conductive element that comprises a feeding point. The radiating structure also comprises the ground plane layer and a radiofrequency system. The radiating system also comprises one or two ports, each providing operation at least at one of the communication systems of operation.

A communication apparatus (1) includes a radio wave radiation source (10), a phase control plate (11) disposed near the radio wave radiation source, and a polarization control plate (12) disposed to be substantially parallel to the phase control plate (11). In the phase control plate (11), a phase of a transmitted electromagnetic wave differs according to a distance from a first representative point on the phase control plate (11). In the polarization control plate (12), a polarization state change given to a transmitted electromagnetic wave at a reference point differs according to an angle formed between a representative line connecting a second representative point on the polarization control plate (12) to an edge of the polarization control plate (12), and a reference line connecting the second representative point to the reference point on the polarization control plate (12).

A communication apparatus (1) includes a radio wave radiation source (10), a phase control plate (11) disposed near the radio wave radiation source, and a polarization control plate (12) disposed to be substantially parallel to the phase control plate (11). In the phase control plate (11), a phase of a transmitted electromagnetic wave differs according to a distance from a first representative point on the phase control plate (11). In the polarization control plate (12), a polarization state change given to a transmitted electromagnetic wave at a reference point differs according to an angle formed between a representative line connecting a second representative point on the polarization control plate (12) to an edge of the polarization control plate (12), and a reference line connecting the second representative point to the reference point on the polarization control plate (12).

The present invention provides a polarization control plate including n layers (n≥4) of overlapping admittance sheets (10-1 to 10-6) each of which includes a plurality of plane unit cells, in which an admittance of a first plane unit cell included in an admittance sheet in a layer a (1≤a≤n) and an admittance of a second plane unit cell being included in an admittance sheet in a layer b (1≤b≤n and b≠a) and overlapping the first plane unit cell are different from each other, and an admittance of the plane unit cell in an x direction and an admittance of the plane unit cell in a y direction are different from each other.

The present invention provides a polarization control plate including n layers (n≥4) of overlapping admittance sheets (10-1 to 10-6) each of which includes a plurality of plane unit cells, in which an admittance of a first plane unit cell included in an admittance sheet in a layer a (1≤a≤n) and an admittance of a second plane unit cell being included in an admittance sheet in a layer b (1≤b≤n and b≠a) and overlapping the first plane unit cell are different from each other, and an admittance of the plane unit cell in an x direction and an admittance of the plane unit cell in a y direction are different from each other.

A planar antenna with an integrated receiver based on aperture coupled antenna elements with inclusive slots electrically coupled to a microstrip feed network residing above a lower ground plane is disclosed. The use of aperture coupled feed elements eliminate the need for vias, which simplifies fabrication. Further, the antenna has integrated electronics located on the same layer as the microstrip feed network to minimize any noise or unwanted parasitic effects.

A polarizing beam splitter includes thin electrically conductive metal sheets each having an edge and a thickness substantially less than the wavelength of a terahertz signal. The sheets are arranged in a stack or array to define wave propagation passages for energy of a terahertz beam directed at a face formed by edges of the sheets, and constitutes an artificial dielectric which operates below cutoff to allow selective transmission through the passages and/or reflection from said face, separating polarization states of the beam with defined power splitting. The artificial dielectric beam splitter can be configured to operate over a broad terahertz band. The sheets are flat, without micropatterned surface features, are robust and simple to manufacture, and form a broad band polarizing beam slitter for terahertz radiation. Complete separation of the transmitted and reflected beam is achieved below cutoff by rotating the polarization of the input beam.

An antenna apparatus has an antenna unit. The antenna unit transmits or receives a probe wave made of an electromagnetic wave. A magnet is disposed at a location through which the probe wave to be received by the antenna unit passes. The magnet works to generate a magnetic field along a direction in which the probe wave propagates. A polarizing filter is arranged on an opposite side of a magnetic body to the antenna unit. This minimizes the interference between an emitted wave and a reflected wave created by a cover, such as a bumper, regardless of the configuration of the cover.

An antenna apparatus has an antenna unit. The antenna unit transmits or receives a probe wave made of an electromagnetic wave. A magnet is disposed at a location through which the probe wave to be received by the antenna unit passes. The magnet works to generate a magnetic field along a direction in which the probe wave propagates. A polarizing filter is arranged on an opposite side of a magnetic body to the antenna unit. This minimizes the interference between an emitted wave and a reflected wave created by a cover, such as a bumper, regardless of the configuration of the cover.

A communication apparatus (1) includes a radio wave radiation source (10), a phase control plate (11) disposed near the radio wave radiation source, and a polarization control plate (12) disposed to be substantially parallel to the phase control plate (11). In the phase control plate (11), a phase of a transmitted electromagnetic wave differs according to a distance from a first representative point on the phase control plate (11). In the polarization control plate (12), a polarization state change given to a transmitted electromagnetic wave at a reference point differs according to an angle formed between a representative line connecting a second representative point on the polarization control plate (12) to an edge of the polarization control plate (12), and a reference line connecting the second representative point to the reference point on the polarization control plate (12).