Radar loss caused by a windshield having laminated glass in a vehicle is suppressed with a simple configuration. An antenna's radiation section is disposed inside the windshield of a vehicle having a plurality of layers. The radiation section not only radiates radio waves but also receives reflected waves of the radio waves from a target. A distance measurement information generation section is connected to the radiation section. The distance measurement information generation section measures a distance to the target on the basis of the radiated radio waves and the reflected waves from the target and generates distance measurement information.

The application provides an antenna and a communications device, and pertains to the field of antenna technologies. The antenna includes a horizontally polarized antenna and a vertically polarized antenna that are disposed in a superposition manner. The horizontally polarized antenna includes a metal sheet, and the metal sheet can be separately connected to a double-sided parallel strip line in the horizontally polarized antenna and a first conductor of a coaxial cable. A diameter of a maximum inscribed circle of the metal sheet is greater than a line width of the double-sided parallel strip line, and both the metal sheet and the coaxial cable are located on a first side of a substrate. Therefore, the metal sheet can effectively suppress an induced current in the coaxial cable, and impact of the induced current on the vertically polarized antenna can be reduced.

The application provides an antenna and a communications device, and pertains to the field of antenna technologies. The antenna includes a horizontally polarized antenna and a vertically polarized antenna that are disposed in a superposition manner. The horizontally polarized antenna includes a metal sheet, and the metal sheet can be separately connected to a double-sided parallel strip line in the horizontally polarized antenna and a first conductor of a coaxial cable. A diameter of a maximum inscribed circle of the metal sheet is greater than a line width of the double-sided parallel strip line, and both the metal sheet and the coaxial cable are located on a first side of a substrate. Therefore, the metal sheet can effectively suppress an induced current in the coaxial cable, and impact of the induced current on the vertically polarized antenna can be reduced.

An electronic device that communicates a packet or a frame is described. This electronic device includes: at least an antenna having an antenna radiation pattern; an interface circuit; and an antenna cover that includes an integrated static lens, where the antenna cover is selected from a set of antenna covers that includes different integrated static lenses. During operation, the interface circuit may transmit, from the antenna, wireless signals corresponding to the packet or the frame, where the integrated static lens modifies the antenna radiation pattern of the antenna. For example, the integrated static lens may cause the wireless signals to converge or diverge. Alternatively, the integrated static lens may change an angular elevation of the antenna radiation pattern and/or may provide a correction for pathloss as a function of angle. Note that the integrated static lens may be a stepwise approximation to a predefined function.

A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects.

A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects.

When three directions perpendicular to each other are defined as x-direction, y-direction and z-direction, the electromagnetic wave reception device is provided with the two or more antenna electrodes extending in the x-direction, the two or more antenna electrodes are arranged parallel to each other and arranged in the z-direction, and the two or more antenna electrodes are connected by the common lead wire, and the antenna electrodes are connected between the two or more antenna electrodes that are adjacent to each other by repeatedly applying a voltage having opposite characteristics to each other, an electromagnetic wave having a resonance frequency determined by the electromagnetic wave velocity and a distance between the antenna electrodes that are adjacent to each other is induced, and the electromagnetic wave is transmitted to a space in the z-direction.

In some embodiments, an apparatus includes a protective cover configured to attach to a wireless device having an exterior surface. The surface includes a first portion and a second portion mutually exclusive from the first portion. The second portion of the surface is associated with at least a portion of an antenna of the wireless device that performs proximity sensing for the wireless device. The protective cover is configured to cover the first portion of the surface when the protective cover is attached to the wireless device. The protective cover is configured to not cover the second portion of the surface when the protective cover is attached to the wireless device. As a result, the proximity sensing and/or the power transmitted by the antenna are not affected by the protective cover when the protective cover is attached to the wireless device and when the wireless device is operational.

In some embodiments, an apparatus includes a protective cover configured to attach to a wireless device having an exterior surface. The surface includes a first portion and a second portion mutually exclusive from the first portion. The second portion of the surface is associated with at least a portion of an antenna of the wireless device that performs proximity sensing for the wireless device. The protective cover is configured to cover the first portion of the surface when the protective cover is attached to the wireless device. The protective cover is configured to not cover the second portion of the surface when the protective cover is attached to the wireless device. As a result, the proximity sensing and/or the power transmitted by the antenna are not affected by the protective cover when the protective cover is attached to the wireless device and when the wireless device is operational.

A wireless charging transmitter is provided for charging an electronic device having a receiver coil. The wireless charging transmitter includes a charging module, including a transmitter coil electromagnetically coupled to the receiver coil, and a comb-shaped combination of shielding and planar dipole antenna array. The comb-shaped combination of shielding and planar dipole antenna array includes a plurality of dipole antennas; each of the dipole antennas includes a plurality of comb-like antenna portions.