A unit cell can be used for a metasurface, metamaterial, or beamforming antenna. The unit cell includes a metal layer attached to a substrate. The metal layer defines an iris opening for the unit cell. One or more tunable capacitance devices are positioned within or across the iris opening. Each tunable capacitance device is to tune resonance frequency of the unit cell. Mass transfer technologies or self-assembly processes may be used to position the tunable capacitance devices.

A phase shifter and an antenna are provided. The phase shifter includes: oppositely arranged first and second substrates; a medium layer between the first and second substrates and having an adjustable dielectric constant; a phase shift unit including a transmission line and a phase control electrode, the transmission line being between the first substrate and the medium layer, and the phase control electrode being between the second substrate and the medium layer; and multiple first wires for regulating an electric field between the transmission line and the phase control electrode, an orthographic projection of the first wires onto the first substrate being parallel to an orthographic projection of the transmission line onto the first substrate, the orthographic projection of the first wires onto the first substrate being on opposite sides of the orthographic projection of the transmission line onto the first substrate.

An antenna for suppressing the gain of side lobes includes a substrate, tandem antenna units arranged on the substrate and each including a first feed line and radiating elements, and the width of the radiating elements decreasing gradually from the middle of the first feed line to the two ends; and a power divider disposed on the substrate and including a feeding port, a second feed line with middle connected to the feeding port, and transmission lines, connected to the second feed line respectively. The output powers of the transmission lines decrease gradually from the middle of the second feed line to the two ends, and the transmission lines are respectively connected to the first feed lines. Thereby, the present invention can effectively suppress the gain of the side lobe both in YZ plane and the XZ plane, and improve target detection.

A leaky-wave antenna includes a substrate extending along an axis, and a dielectric waveguide extending along the axis and arranged in the substrate. The dielectric waveguide includes at least a top side, a bottom side, and opposite sides arranged between the top and bottom sides. A distance defined between the opposite sides varies along the axis for at least part of a length of the dielectric waveguide.

Disclosed is an antenna impedance matching circuit, an antenna system, a printed circuit board, and a terminal. The antenna impedance matching circuit comprises: a first transmission line having a first specific length such that the first transmission line is capacitive, and a second transmission line having a second specific length such that the second transmission line is inductive. In particular, the first transmission line and the second transmission line are connected in parallel, and terminals of the first transmission line and the second transmission line are open or shorted.

A radar sensor for motor vehicles. The radar sensor includes an antenna arrangement having multiple antenna elements linearly arranged at uniform distances along a connecting line, the distance between each two adjacent antenna elements being equal to half of the mean wavelength λ of the emitted radar signal, and the arrangement including at least one triple of adjacent antenna elements, in which the two antenna elements located on the outside in the triple, on the one hand, and the interposed antenna element, on the other hand, originate in opposite directions from the connecting line. The antenna arrangement includes at least one pair of antenna elements which originate in opposite directions from the connecting line and whose distance from one another is an integer multiple of the wavelength λ, so that one of these antenna elements has a negative amplitude taper in relation to the antenna elements of the triple.

A unit cell can be used for a metasurface, metamaterial, or beamforming antenna. The unit cell includes a metal layer attached to a substrate. The metal layer defines an iris opening for the unit cell. One or more tunable capacitance devices are positioned within or across the iris opening. Each tunable capacitance device is to tune resonance frequency of the unit cell. Mass transfer technologies or self-assembly processes may be used to position the tunable capacitance devices.

A technique is described where the switch and/or tunable control circuit for use with an active multi-mode antenna is positioned remote from the antenna structure itself for integration into host communication systems. Electrical delay and impedance characteristics are compensated for in the design and configuration of transmission lines or parasitic elements as the active multi-mode antenna structure is positioned in optimal locations such that significant electrical delay is introduced between the RF front-end circuit and multi-mode antenna. This technique can be implemented in designs where it is convenient to locate switches in a front-end module (FEM) and the FEM is located in vicinity to the transceiver.

Antennas oriented at a first orientation toward an area of interest can transform radar signals through a first transformation that physically maps the plurality of radar signals with a plurality of unique beam angles corresponding to a plurality of unique frequencies. Antennas oriented at a second orientation toward the area of interest can transform radar signals through a second transformation completing the first transformation. A frequency scan can be performed on a first plurality of responses to first radar signals to identify first spatial data along a first dimension. Second spatial data at second spatial location along a second dimension can be created from a second plurality of responses corresponding to the second transformation. An image can be generated using the first spatial data and the second spatial data while a range value of the area of interest can be determined using the first plurality of responses.

Provided are an antenna apparatus and an electronic device. The antenna apparatus comprises a plurality of antenna units, spaced from each other; a plurality of decoupling networks, corresponding to the plurality of antenna units one to one; and a decoupling transmission line. Each of the decoupling networks comprises a first transmission line and a second transmission line; an end of the first transmission line is configured to be connected to a radio-frequency chip, the other end of the first transmission line is connected to an end of the second transmission line, a decoupling port is formed at a joint between the other end of the first transmission line and the end of the second transmission line, and the other end of the second transmission line is connected to a corresponding antenna unit; and the decoupling transmission lines is connected between adjacent decoupling ports. The electronic device comprises the antenna apparatus.