12 results about "Dielectric lens" patented technology

An antenna module includes a mounting board with a flat plate shape, and a power supply circuit to supply a radio frequency signal. The power supply circuit is mounted on the mounting board, and a radiating electrode is arranged on the power supply circuit. A dielectric fills a region around the power supply circuit and the radiating electrode. A conductive layer covers at least part of the dielectric. In the dielectric, a lens part is formed at a position overlapping the radiating electrode in plan view of the mounting board. The dielectric includes a first region in which the lens part is formed and a second region other than the first region, and the conductive layer is formed in the second region.

The proposed dielectric beamformer may be used to provide beam-forming of a transmitted radio-frequency (RF) signal. The dielectric beamformer includes a dielectric lens that provides a means of quickly steering a peak beam of the RF signal in a specific direction, allowing tracking of a distant signal, or multiple distant signals. Moreover, the beam of the RF signal can be steered to place a null in a chose direction to reduce interference. The dielectric beamformer includes a dielectric lens, which includes a first layer including a plurality of photo-voltaic (P-V) cells and a second layer including a plurality of piezoelectric cells, and one or more light sources arranged to emit light beams towards the P-V cells of the first layer. The piezoelectric cells are electrically connected to the P-V cells to receive the electricity produced in the P-V cells.

This invention discloses a Ka-band focusing array dielectric lens based on impedance matching, comprising several dielectric lens units. Each dielectric lens unit has a three-layer dielectric structure, consisting of a front dielectric substrate, a middle phase modulator, and a rear dielectric substrate, arranged according to the electromagnetic wave incident direction. The dielectric constants of the three dielectric layers are set according to preset conditions. The thicknesses of the front and rear dielectric substrates are set based on the wavelength of the electromagnetic wave in their respective media. The thickness of the middle phase modulator is calculated based on the compensation phase of the lens unit. This invention reduces interface reflection loss by adjusting the thickness of the front and rear dielectric substrates and achieves phase compensation for different dielectric lens units by adjusting the thickness of the middle phase modulator, thereby improving the electromagnetic wave focusing performance.

The application discloses an L-band dielectric lens and a lens antenna for satellite multi-beam communication and belongs to the technical field of communication.The lens designed by the application is a cylindrical flat plate lens and is composed of a plurality of concentric circular ring layers.Each circular ring layer is arranged in a circular ring shape around the center by fan ring structure units of the same configuration, and the dielectric constant of each layer gradually decreases from the center to the edge.Compared with a traditional flat plate lens after optical transformation, the lens can realize miniaturization without complex optical transformation, has a simple structure, the lens thickness can be adjusted at will, and the lens can be quickly prepared by using 3D printing.The fan ring structure unit combining the "Y" shape and the circular perforation shape is used as an equivalent dielectric constant model, so that the dielectric constant is closer to the ideal gradient change, and the lens is closer to the ideal effect, so that the lens can be used in the lens antenna, and the working performance is further improved.

The invention discloses a static millimeter wave wide-field dual-polarization superstructure detector for non-interactive personnel security inspection, and belongs to the technical field of detectors. The electromagnetic receiving and transmitting module is used in cooperation with a built-in micro-motion rotary table, a system-level static wide-view-field scanning mechanism is achieved, dynamic time sequence beam deflection can be achieved, and the electromagnetic receiving and transmitting module is a wide-view-field super-structure lens; the built-in micro-motion turntable controls the transmitting and receiving feed antenna of the electromagnetic receiving and transmitting module to regulate and control the direction of millimeter wave transmitting and receiving beams, so that directional signal transmitting and receiving in a large range are realized; the data acquisition module is used for reading the recovered voltage signals converted by the co-polarization and cross-polarization scattering echoes; and the upper computer module is used for analyzing the acquired dual polarization data. The invention aims to replace a heavy and clumsy dielectric lens in a traditional millimeter wave personnel security inspection system, so that the wide-view-field scanning performance is improved while the integration level and the lightweight level of the system are improved.

The application discloses a medium lens, a radiation unit and a base station antenna, the medium lens is arranged above a vibrator, and the medium lens comprises a spherical body and a support; a beam adjustment cavity is constructed in the spherical body; the upper end of the support is connected with the spherical body, and the lower end of the support is used for fixing; the spherical body and the beam adjustment cavity are configured to: different phase compensations are performed on electromagnetic waves incident in different directions, so that the beams are focused; electromagnetic wave phase compensation and beam focusing are realized through the cooperative design of the spherical body and the beam adjustment cavity, the structural strength, the manufacturing process and the electromagnetic performance are taken into account at the same time, the gain and the comprehensive performance of the base station antenna are significantly improved, and the development requirements of 5G / 6G base station antenna miniaturization, low cost and high consistency are adapted.

The application discloses a kind of broadband end-fire antennas applied to X frequency band, including: dielectric substrate, dielectric lens, first radiating patch, second radiating patch, microstrip feed line and ground plane, first radiating patch and microstrip feed line are set on the front surface of dielectric substrate by printing, first radiating patch is electrically connected with microstrip feed line, one end of microstrip feed line is electrically connected with first radiating patch, second radiating patch and ground plane are set on the back surface of the dielectric substrate by printing, dielectric lens is embedded in the upper end of dielectric lens with the upper end surface of dielectric substrate without radiating patch part, the lower end of dielectric lens is provided with rectangular notch, the left and right sides in the rectangular notch of dielectric lens are in contact with the left and right sides of dielectric substrate;The dielectric lens is open cuboid, and the open cuboid is provided with embedded opening.

The invention discloses a high-bandwidth high-gain dual-polarization tapered slot line antenna, and relates to the technical field of antennae, the antenna comprises two tapered slot line antenna units with the same structure, a conical dielectric lens and a plurality of metal rings, the two tapered slot line antenna units are nested and combined in a 90-degree rotation manner, and each antenna unit is provided with a first metal layer, a dielectric layer and a second metal layer from top to bottom; and the first metal layer is provided with a quarter circular slot, an elliptic arc curve slot and a rectangular-circular-symmetric index curve combined slot. The antenna has the advantages that the geometric structure of the second tapered slot antenna unit is designed on a plane orthogonally symmetric to the plane of the first tapered slot antenna unit in a mirror image manner through the radiation system; the high geometric symmetry is realized, the feeder lines of the two antenna units face each other in the same quarter space separated by the substrate, and the feed terminals are located in diagonal areas, so that the feeder lines do not interfere with each other.

The dual-polarization broadband MIMO antenna provided by the invention is better in return loss and wider in working frequency band. Wherein the arrangement of the decoupling wall significantly reduces the mutual influence between the lenses, so that the wave beam is more stable, the isolation between the dual-polarized broadband antennas is improved, and the antenna gain is enhanced. The multiple decoupling layers arranged side by side generate surface traveling waves and focus electromagnetic waves propagating in the direction perpendicular to the layers into the radiator. In addition, the lens composed of the layered stubs has significantly reduced energy reflected from waves penetrating the outer contour thereof compared to a lens made of a homogeneous dielectric material. Therefore, compared with a dual-polarized antenna using a traditional dielectric lens, the dual-polarized antenna adopting the lens has the advantage that the interference on an adjacent dual-polarized antenna is much smaller. In addition, this decoupling wall has little impact on return loss and is easier to manufacture compared to conventional solutions.

The invention relates to a millimeter wave dielectric lens antenna device which comprises a magnetoelectric dipole antenna array feed source and a dielectric lens antenna, the dielectric lens antenna is placed in front of the magnetoelectric dipole antenna array feed source, and wide-angle scanning of wave beams is achieved by switching different feed sources and changing the irradiation position of electromagnetic waves on the dielectric lens. According to the millimeter wave dielectric lens antenna device, the magnetoelectric dipole antenna array is adopted as a feed source, the dielectric lens is placed in front of the magnetoelectric dipole antenna array, and wide-angle and low-gain-loss beam scanning is achieved by switching the position of the feed source and combining the phase distribution optimization design of the dielectric lens. According to the invention, the scanning range of the antenna is obviously expanded, the gain loss in the scanning process is greatly reduced, the radiation efficiency and stability of the antenna are improved, miniaturization and light weight of the antenna are realized, the gain of the antenna unit is improved, the sensitivity of the antenna unit to external interference factors is reduced, and the anti-interference capability of the antenna is enhanced.

The utility model discloses a terahertz ultra-wideband lens antenna, and relates to the technical field of terahertz. The terahertz ultra-wideband lens antenna comprises a logarithmic helical antenna body and dielectric lenses, the dielectric lenses comprise a hemispherical dielectric lens and a cylindrical dielectric lens, and the radius of the cylindrical dielectric lens is equal to that of the hemispherical dielectric lens. The bottom wall of the cylindrical dielectric lens is attached to the plane wall of the hemispherical dielectric lens, the logarithmic helical antenna body is arranged on the top wall of the cylindrical dielectric lens, and the logarithmic helical antenna body comprises a first helical arm and a second helical arm. The logarithmic helical antenna body has the characteristics of ultra wide band and non-frequency variation, the logarithmic helical antenna body is arranged on the dielectric lens, the dielectric lens can eliminate surface waves generated by optical property discontinuity of the logarithmic helical antenna body and a free space, and meanwhile, beams are focused, so that the radiation direction of the antenna is oriented.

The invention discloses a miniaturized antenna device for a microwave moisture meter and a working method of the miniaturized antenna device, and belongs to the technical field of microwave detection. The device comprises a printed board antenna, a dielectric lens, a connecting piece and a shell. The printed board antenna comprises a dielectric substrate, a feed network and a microstrip antenna unit, the bottom surface of the dielectric substrate is coated with copper, and the antenna unit is laid on the top surface of the dielectric substrate; the dielectric lens is made of a low-loss dielectric, is a part of a hemisphere in shape and is mounted above the printed board antenna, the spherical side faces the antenna, and the plane side is fixed at the upper end of the shell; the connecting piece comprises a coaxial cable and a radio frequency connector and is used for signal transmission and external connection. The antenna gain is improved through the focusing effect of the dielectric lens, meanwhile, the miniaturization of the structure is achieved, and the antenna is suitable for occasions with limited installation space. The working method supports single-point test or multi-point array test, realizes multi-channel detection through time-sharing switching of the radio frequency switch, and has the advantages of flexibility, high efficiency, low cost and the like.