An antenna system with co-located dipole antennas with mutually-orthogonal polarization is disclosed herein. The two antennas have planar geometry for the entire antenna and the two antennas are co-located in two mutually-orthogonal planes which provides an antenna solution for wireless communications with high isolation between the two antennas and polarization diversity in a minimum volume occupied. The two antennas operate in the same wireless communications band or in different bands.

An antenna system with co-located dipole antennas with mutually-orthogonal polarization is disclosed herein. The two antennas have planar geometry for the entire antenna and the two antennas are co-located in two mutually-orthogonal planes which provides an antenna solution for wireless communications with high isolation between the two antennas and polarization diversity in a minimum volume occupied. The two antennas operate in the same wireless communications band or in different bands.

An antenna (100) includes a ground plate (110) and a radiating element (130) that has a shape expanding in a predetermined expansion direction and a self-similar shape with respect to an end portion (135) connected to a feeding line (151) that is a feeding portion. The radiating element (130) is arranged in a standing state relative to the end portion (135) so as to face the end portion (135) toward the ground plate (110). In addition, the radiating element (130) has a first radiating element portion (131) and a second radiating element portion (133) that are plane-symmetric to each other across a predetermined virtual symmetric plane (A1) along the expansion direction, and thereby forms a shape expanded in the expansion direction.

An antenna device includes an antenna board in which a conductor pattern is provided on each of both surfaces of a dielectric substrate. A linear element is provided on a first surface of the dielectric substrate. A slit antenna is provided on a second surface of the dielectric substrate opposite to the first surface. When the first surface and the second surface are superimposed on each other, the linear element and a slit of the slit antenna overlap with each other.

A portable satellite antenna (1) includes radiating elements (2), made of flexible shape memory material, attached to a main body (3) acting as a handle. In operation (W) of the antenna elements (2) are arranged in a fan-like radial pattern (X). When not operational (H) they are folded in a position (R) in which they adhere to the main body (3). For the definition and maintenance of the radiating elements (2) in the folded position (R), means of stabilization (4) are provided, such as a cap (40) or a band (41), or even a collar (42) or a sleeve (43), to be associated, in a fixed or removable way, to the main body (3) and radiating elements (2), which are capable of spontaneously returning to the fan-like radial configuration (X), corresponding to operation (W) of the antenna (1), as a result of the removal/opening of the means of stabilization (4).

An assembly comprising a horizontal GPS patch antenna element and a vertical IFF antenna element providing simultaneous high performance IFF communication and GPS reception with minimal IFF to GPS interference. The IFF element can be a monopole element. A second monopole co-linear with the IFF element can provide simultaneous UHF communication. In embodiments, the assembly is a blade that can replace an existing IFF blade on an aircraft or other asset. Separate IFF and GPS connectors can be provided, or a single connecter can be shared using an integral diplexer. Embodiments include a GPS preamplifier integral with the blade. In other embodiments, the IFF element is an annular slot transponder that is centered on the GPS patch element. System embodiments include bandpass filters and/or GPS blanking to further protect the GPS receiver from IFF transmissions.

An assembly comprising a horizontal GPS patch antenna element and a vertical IFF antenna element providing simultaneous high performance IFF communication and GPS reception with minimal IFF to GPS interference. The IFF element can be a monopole element. A second monopole co-linear with the IFF element can provide simultaneous UHF communication. In embodiments, the assembly is a blade that can replace an existing IFF blade on an aircraft or other asset. Separate IFF and GPS connectors can be provided, or a single connecter can be shared using an integral diplexer. Embodiments include a GPS preamplifier integral with the blade. In other embodiments, the IFF element is an annular slot transponder that is centered on the GPS patch element. System embodiments include bandpass filters and/or GPS blanking to further protect the GPS receiver from IFF transmissions.

The invention relates to a radiofrequency transmission device comprising an electrical board, a transmission line, and an electroconductive fastening element which is intended to fasten the electrical board to a support, the transmission line being electrically coupled to the fastening element such that the fastening element forms at least one first radiating portion of an antenna arranged so as to emit and/or receive radiofrequency signals travelling along the transmission line.

Systems and devices relating to antennas and antenna systems. A horizontal omnidirectional antenna has two dipoles with each dipole being in a V-configuration such that the arms of the dipole define an angle. The two dipoles are arranged so that the angles defined by each of the dipoles face and open toward each other. The horizontal omnidirectional antenna can be configured to operate with specific frequency bands. By nesting two instances of this antenna, with one configured for high band frequencies and one configured for low band frequencies, a dualband omnidirectional antenna can be obtained. The resulting antenna is physically compact and can be used in small MIMO systems along with vertical omnidirectional antennas.

Systems and devices relating to antennas and antenna systems. A horizontal omnidirectional antenna has two dipoles with each dipole being in a V-configuration such that the arms of the dipole define an angle. The two dipoles are arranged so that the angles defined by each of the dipoles face and open toward each other. The horizontal omnidirectional antenna can be configured to operate with specific frequency bands. By nesting two instances of this antenna, with one configured for high band frequencies and one configured for low band frequencies, a dualband omnidirectional antenna can be obtained. The resulting antenna is physically compact and can be used in small MIMO systems along with vertical omnidirectional antennas.