Systems and methods for integrating cameras and phased array antennas for use in electronic toll charge (ETC) are disclosed. In one aspect, an ETC system includes a camera including a lens and configured to capture an image indicative of a position of a vehicle and a plurality of antennas formed in a ring around the lens of the camera. The system further includes control circuitry configured to: determine the position of the vehicle based on the image captured by the camera, adjust the antennas for beamforming based on the position of the vehicle, and wirelessly communicate with an on board device (OBU) of the vehicle via the beamforming provided by the adjusted antennas.

An antenna device of the present invention includes, in one aspect: a patch antenna having a resonant frequency at a first frequency; and a loop antenna having a resonant frequency at a second frequency that is different from the first frequency. A loop length of the loop antenna is such that standing waves are generated in the loop antenna when the loop antenna receives radio waves of the first frequency, and the patch antenna is disposed so as to magnetically couple with the loop antenna.

There is provided an antenna that transmits and receives a wireless signal compliant with a designated communication standard, the antenna comprising: a metal plate that is disposed on a circuit board; a first supporting section that supports the metal plate and connects the metal plate to a feed point formed on the circuit board; at least one second supporting section that supports the metal plate and connects the metal plate to a ground plane formed on the circuit board; and a plurality of extension sections that extend from an outer edge of the metal plate toward a direction of the circuit board but have no contact with the circuit board; wherein the plurality of extension sections operate as perturbation elements that form two excitation modes, the two excitation modes spatially intersecting with one other.

An antenna array module for a communication system on a cargo ship, includes at least a first, a second and a third antenna element, each mounted on a ground plane and containing an antenna feed. The first antenna element is tilted with respect to the second antenna element. The first and the second antenna element are arranged to radiate mainly towards a first path along the cargo ship and the third antenna element is arranged to radiate mainly towards a second path opposite to the first path.

An antenna (e.g., circularly polarized (CP) planar aperture antenna) is presented herein. An antenna can include an opening cavity and a patch section within a perimeter of the opening cavity. The patch section can have crossed patch in a windmill shape. The opening cavity can have a windmill shape. The patch section can be fed differentially via grounded co-planar waveguide (GCPW). The antenna can be formed in a single layer substrate and can be 180° rotationally symmetric about its center. A height of the opening cavity can be quarter-wavelength at operating frequency and a diameter of the opening cavity can be larger than one wavelength at operating frequency.

The antenna apparatus has a base station installed in a first space partitioned by a wall, a radio terminal provided in a second space, and a repeater including passive antennas and installed on the wall. The repeater is constituted of a first antenna that transmits and receives signals to and from a base station, a plurality of second antennas that transmit and receive the signals to and from the radio terminal, and a transmission line that connects the first antenna with the second antenna. Further, the plurality of second antennas are installed such that planes of polarization of the second antennas are different from each other to improve transmission with the radio terminal.

Systems and methods relating to patch antennas. A patch antenna has a substrate, a resonant metal plate at one side of the substrate, and a ground plane at the other opposite side of the substrate. Two feed pins are used to couple the antenna to other circuitry. The feed pins pass through the substrate and holes in at the ground plane. The feed pins are physically disconnected from both the resonant metal plate and the ground plane. The feed pins are capacitively coupled to the resonant metal plate to provide an electronic connection between other circuitry and the patch antenna.

Radio devices for wireless transmission including an integrated adjustable mount allowing mounting to a pole or stand and adjustment of the angle of the device (e.g., the altitude). The device may include a compact array antenna having a high gain configured to operate in, for example, the 5.15 to 5.85 GHz band and/or the 2.40-2.48 GHz band. The antenna emitters may be arranged in a separate plane from a plane containing the antenna feed connecting the emitting elements and also from a ground plane. The antenna array may be contained within a protective weatherproof housing along with the radio control circuitry.

A monopatch antenna system includes a ground plane, a patch antenna arranged parallel to the ground plane and having an aperture, and a monopole antenna extending perpendicularly to the ground plane through the aperture in the patch antenna. A feed system supplies a first portion of an RF signal to the patch antenna with a substantially circular polarization and simultaneously supplies a second portion of the RF signal to the monopole antenna with a linear polarization to produce a wide-beam composite antenna beam pattern having both linear and circular polarizations of the RF signal.

A mobile platform communication system includes one or more HF antennas disposed in the surface of the mobile platform. The HF antenna may comprise one or more mesh screens. Alternatively, or in addition, the HF antennas may comprise characteristic mode transducers to excite metallic features on the mobile platform skin. The mobile platform skin includes a lightning strike protection layer that is disposed within the mobile platform skin around in internal surface of the antenna such that the antenna does not distend the mobile platform skin and increase drag.