The invention relates to a surface wave antenna system, comprising at least one antenna that is electrically short in the vertical plane, with vertical or elliptic polarization and emitting a radiation, said antenna being linked to a conducting medium exhibiting a substantially horizontal surface. The antenna system being characterized in that it comprises furthermore at least one parasitic wire extending in a direction substantially parallel to the surface of the conducting medium, electrically insulated from each antenna, and arranged in the vicinity of at least one antenna in such a way as to be able to radiate by virtue of the current induced by said radiation of this antenna. The invention makes it possible to combine the resultants of each radiating element in such a way as to control the radiation pattern in the vertical plane.

The invention relates to a surface wave antenna system, comprising at least one antenna that is electrically short in the vertical plane, with vertical or elliptic polarization and emitting a radiation, said antenna being linked to a conducting medium exhibiting a substantially horizontal surface. The antenna system being characterized in that it comprises furthermore at least one parasitic wire extending in a direction substantially parallel to the surface of the conducting medium, electrically insulated from each antenna, and arranged in the vicinity of at least one antenna in such a way as to be able to radiate by virtue of the current induced by said radiation of this antenna. The invention makes it possible to combine the resultants of each radiating element in such a way as to control the radiation pattern in the vertical plane.

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.

Provided is a power antenna adapter insertable into a power antenna mast housing to enable the utilization of an unpowered antenna through a power antenna unit of the type used in a motor vehicle and the like.

Described and disclosed herein is a wideband polarized patch antenna and the antenna array that can cover mmWave frequency band from 24.3 to 29.6 GHz for 5G applications, and a feeding structure for such an antenna comprising a single element of a polarized helical-shaped L-probe fed patch antenna (HLF-PA) package.

Described and disclosed herein is a wideband polarized patch antenna and the antenna array that can cover mmWave frequency band from 24.3 to 29.6 GHz for 5G applications, and a feeding structure for such an antenna comprising a single element of a polarized helical-shaped L-probe fed patch antenna (HLF-PA) package.

In accordance with some embodiments, an automatically tunable mobile antenna is provided with toroidal inductors connected in series between the antenna feed point and a whip and a shunt inductor to ground at the RF input, with the inductors forming an L network impedance matching circuit having values which are in a binary sequence and which are selectively added to impedance match the whip to the output impedance of a transmitter. In accordance with some embodiments, an automatically tunable mobile antenna is provided with a variable toroidal inductor assembly connected between the antenna feed point and the whip having a variable inductance based on selective shorting and un-shorting of wire windings to impedance match the whip to the output impedance of the transmitter.

An antenna system is disclosed. The antenna system includes a base, a beam carried by the base, a global positioning system antenna carried near a first end of the beam, and a monopole antenna carried near a second end of the beam.

A line conductor is configured so as to be arranged between a lower surface conductor and an upper surface conductor in parallel with the lower surface conductor in such a way as to extend around the periphery of a hollow cylindrical conductor in a state in which an end is connected to a side surface of the hollow cylindrical conductor and another end is open. As a result, efficient supply of power to a conductive liquid can be performed without disposing a conducting tube having a length of approximately /4 at an operating frequency.

An antenna array structure is described that includes at least two antenna arrays co-located on a common planar array reflector. One of the antenna arrays has a first, central scan range. The other antenna array includes antenna elements that can be controlled to scan regions outside of the first, central scan range.