537 results about "Millimeter wave antennas" patented technology

A millimeter wave (MMW) antenna array includes a continuous transverse stub (CTS) radiating aperture comprising a set of spaced continuous transverse stubs, each having a longitudinal extent. A series feed system is coupled to an excitation source for exciting the stubs with MMW electromagnetic energy having a linear phase progression along the longitudinal extent of the stubs to produce an array beam which can be scanned over a beam scan range by changing the excitation frequency.

An electronic device and an operation method of an electronic device are provided. The electronic device includes at least one mmWave antenna module configured to include a plurality of antennas, a camera capable of measuring a distance between an external object and the electronic device, a communication processor configured to be operationally connected to the at least one mmWave antenna module, and an application processor configured to be operationally connected to the camera and the communication processor.

A mmWave electronics package constructed from common Printed Circuit Board (PCB) technology and a metal cover. Assembly of the package uses standard pick and place technology and heat is dissipated directly to a pad on the package. Input/output of mmWave signal(s) is achieved through a rectangular waveguide. Mounting of the electronic package to an electrical printed circuit board (PCB) is performed using conventional reflow soldering processes and includes a waveguide I/O connected to an mmWave antenna. The electronic package provides for transmission of low frequency, dc and ground signals from the semiconductor chip inside the package to the PCB it is mounted on. An impedance matching scheme matches the chip to high frequency board transition by altering the ground plane within the chip. A ground plane on the high frequency board encircles the high frequency signal bump to confine the electromagnetic fields to the bump region reducing radiation loss.

The invention relates to a serial-parallel connection modulation optical frequency multiplication millimeter-wave RoF (Radio Over Fiber) system and a QPSK (Quadrature Phase Shift Keying)/16QAM (Quadrature Amplitude Modulation) modulation method thereof. The system comprises a central station, a base station and fiber connection thereof, wherein the central station comprises a single longitudinal mode laser, a double-electrode Mach-Zehnder optical modulator, an IQ optical modulator, two microwave signal sources, a pi phase shifter, a pi/2 phase shifter and an erbium doped fiber amplifier; and the base station comprises an optical detector, a front low-noise amplifier, two millimeter-wave bandpass filters, two millimeter-wave amplifiers, a millimeter-wave duplexer and a millimeter-wave antenna. In the method, the cascading of the double-electrode Mach-Zehnder optical modulator and the IQ optical modulator is adopted, and a balanced optical waveguide structure formed by integrating the two optical modulators avoids the influence of optical source phase interference noise caused by support arm optical delay inequality on modulation signals.

A mm-wave antenna apparatus with beam steering function that includes: a Butler Matrix feeding network; a plurality of power combiners, each power combiner having one input and N outputs, configured to apply equal phase and power to a phase distributed output signal generated by the Butler Matrix feeding network and to generate N processed signals; and a plurality of millimeter wave switched beam planar antenna arrays having at least 1.5 GHz of bandwidth and located on a top low loss dielectric substrate, each antenna array of N elements, configured to obtain direct and narrow width beams from the N processed signals combined by each power combiner.

The invention relates to a surface-type millimeter wave scanning three-dimensional holographic imaging safety check system which comprises a millimeter wave signal emission driving module, a millimeter wave signal acquisition module, a millimeter wave signal processing module, a millimeter wave emission antenna and a millimeter wave reception antenna. The millimeter wave emission antenna and the millimeter wave reception antenna form a surface-type millimeter wave antenna array, wherein the surface-type millimeter wave antenna array is used for scanning a region to be detected; the millimeter wave emission antenna is connected with the millimeter wave signal emission driving module; the millimeter wave reception antenna is connected with the millimeter wave signal acquisition module; and the millimeter wave signal processing module is connected with the millimeter wave signal acquisition module. According to the surface-type millimeter wave scanning three-dimensional holographic imaging safety check system, through the surface-type millimeter wave antenna array, single scanning time is greatly reduced; and meanwhile, since equipment does need to be subjected to mechanical rotation, equipment wearing is not easy to cause, service time of the equipment is substantially prolonged and equipment fault is reduced.

The present invention discloses a three-dimensional integrated packaging based on a millimeter wave antenna and a silicon-based multi-channel component. The packaging comprises a radiation layer, wherein the radiation layer is a micro-strip patch antenna array; a high resistivity silicon substrate with a TSV feeding structure; a dielectric wiring layer with microwave wirings and digital wirings; asurrounding frame with a TSV three-dimensional vertical transmission structure and an air-tightness packaging cover plate with a TSV transmission structure. According to the packaging, by integratingthe micro-strip patch antenna array, microwave chip(s), digital chip(s) and passive device(s) in a same module via a MEMS process at the same time, the middle part of the surrounding frame has the TSV structure capable of realizing vertical transmission of microwave signal(s), so that integration degree is relative high, the microwave properties are good, the multi-functionalization and the miniaturization of the components can be realized.

The invention discloses a planar antenna for a dual-frequency millimeter wave system. The planar antenna for the dual-frequency millimeter wave system comprises a radiation plate printed at the middle of a medium plate and used for emitting or receiving electromagnetic wave energy, a symmetrical E-shaped groove arranged at the middle of the radiation plate and used for providing a current path needed for dual-frequency resonance, feed structures arranged at two sides of the radiation plate and used for providing signal feed for the radiation plate, a grounding plate arranged on the lower surface of the medium plate and used for providing grounding signals, and an antenna port arranged in the lower surface of the medium plate and used for inputting differential signals to the feed structures. The planar antenna for the dual-frequency millimeter wave system is simple in structure and convenient to popularize in millimeter wave antennas, and the directional diagram height is symmetrical at the millimeter wave frequency band.

The invention discloses a miniaturized broadband dual-polarized magnetoelectric dipole millimeter wave edge-emitting antenna and an array thereof. The edge-emitting antenna comprises a top metal layer(1), a first dielectric layer (2), a second metal layer (3), a second dielectric layer (4), a third dielectric layer (5), a third metal layer (6), a fourth dielectric layer (7), a fifth dielectric layer (8) and a bottom metal layer (9) which are sequentially arranged from top to bottom. A size of a transverse electric dipole is reduced through a longitudinal bending structure, miniaturization isfurther achieved, meanwhile, a dual-polarized antenna array composed of the antenna is also provided, and a millimeter wave antenna and an array structure which are wide in impedance bandwidth, low incomplexity feed structure, low in feed profile and easy to directly integrate in two polarization directions are achieved. In the invention, more than 50% of dual-polarization impedance bandwidth canbe obtained, an in-band gain fluctuation is also lower than 3dB, and a stable directional diagram is provided.

A radome comprises a structure covering an antenna, the structure being substantially transparent to radiation of the antenna in a first direction and being less transparent to radiation of the antenna when deviating from the first direction, thereby imparting a directional profile to radiation of the antenna. The millimeter wave antenna structure comprises a sub-reflector lens, and a reflector, the sub-reflector lens in turn comprising a reflecting metal plate and a lens shaped dielectric material, the lens shaped dielectric material and the reflecting metal plate being shaped together to provide a predetermined radiation illumination pattern on the reflector. A waveguide matching holder connects a circular cross section waveguide via a circular cavity, and a rectangular waveguide feed via a rectangular cavity, the rectangular and the circular cavities being shaped to merge into each other.

The invention discloses a millimeter wave antenna system and a communication device. The millimeter wave antenna system comprises a frame/housing equipped with an antenna slot; a high dielectric coverlayer arranged on the outside of the antenna slot; a signal transmission unit provided on the inner side of the antenna slot; a signal transceiver assembly electrically connected to the signal transmission unit; and an intermediate frequency and baseband processing unit electrically connected to the signal transceiver assembly; The dielectric resonant antenna array of millimeter wave antenna system is composed of the high dielectric cover layer, the antenna slot and the signal transmission unit. The invention provides an antenna system, which has the characteristics of small occupying space,many correctable factors and high working efficiency.

The invention discloses a multiple-substrate integrated waveguide filtering power divider. The multiple-substrate integrated waveguide filtering power divider comprises three dielectric substrates and four layers of metal, wherein the four layers of metal are located on the upper surface of the uppermost substrate, on the lower surface of the lowermost substrate and between the substrates respectively. A rectangular metallization through hole array is formed by metallization holes in the four edges. A rectangular resonant cavity is formed by the rectangular metallization through hole array and the two layers of metal between the substrates. An input port is formed in the left side of the rectangular resonant cavity and an output port is formed in the right side of the rectangular resonant cavity. A one-to-four filtering power divider and a one-to-two same-phase or opposite-phase filtering power divider can be flexibly designed. A substrate-integrated waveguide inductive window filter is embedded between the input port and the output port. The multiple-substrate integrated waveguide filtering power divider has the advantages of being broad in band, low in insertion loss, good in input voltage standing wave ratio, good in consistency of amplitudes of output signals, low in amplitude unbalance and the like. The multiple-substrate integrated waveguide filtering power divider can be applied to a microwave and millimeter wave antenna feed network and the like and has wide application prospect in microwave and millimeter wave systems such as a communication system and radar.

The invention relates to a millimeter wave imaging method and system. A first millimeter wave antenna array and a second millimeter wave antenna array transmit continuous frequency waves to an arc middle area and receive returned millimeter waves. The first millimeter wave antenna array and the second millimeter wave antenna array move in the vertical direction so as to transmit and receive the millimeter waves in the vertical direction of the arc middle area. An image processing module carries out image combination on the millimeter waves received by a first millimeter wave receiving and transmitting module and a second millimeter wave receiving and transmitting module so that a three-dimensional image of an objected to be imaged can be formed in the arc middle area. According to the millimeter wave imaging method and system, a detecting mode of combining translation scanning of vertical mechanical driving of switch antenna arrays and arc direction scanning is adopted, all-dimensional scanning of the human body can be effectively finished, and the safety inspection efficiency is improved.

The invention discloses a calibration method for a millimeter-wave antenna array. Coarse calibration of the amplitude and the phase of the antenna array is realized through a calibration metal plate by an external reference calibration method; then three-dimensional space reconfiguration of the calibration metal plate is realized by a wavefront reconstruction algorithm based on space frequency interpolation, and precision calibration of the phase is realized by correcting the phase of the antenna array through self-focusing of a three-dimensional space scattering intensity distribution sectional drawing. According to the calibration method, under the condition that an extra calibration algorithm is not added, the precision for calibrating the millimeter-wave antenna array is greatly improved by an imaging algorithm and the external reference calibration method.

A printed circuit board (PCB) assembled to include at least one millimeter wave antenna and a radio frequency integrated circuit (RF IC). The PCB comprises a square-shaped cavity in the PCB, wherein one of the edges of the cavity is substantially parallel to connecting pins of the at least one millimeter wave antenna; a RF IC placed in the cavity, wherein one side of the RF IC including RF pads is substantially at the edge of the cavity that is substantially parallel to the connecting pins; and traces connecting the RF pads and the connecting pins, wherein the connection between the at least one millimeter wave antenna and the RF IC shortens the length of the traces.

A test fixture for an integrated circuit (IC) device under test (DUT) includes: a metallic casing; and first and second antennas secured respectively in first and second RF anechoic chambers in the metallic casing and coupled to a programmable attenuator. The IC DUT is positioned on or in the metallic casing so that an integrated millimeter wave (MMW) antenna thereof is aligned with the first antenna to radiate an MMW signal toward the first antenna through the first RF anechoic chamber. A predetermined MMW signal, which is radiated from an MMW source secured in the second RF anechoic chamber toward the second antenna, is received by the second antenna, is attenuated by the attenuator, and is radiated by the first antenna toward the MMW antenna of the IC DUT.

A device used for generating QPSK millimeter wave of radio frequency optical fiber transmission system consists of semiconductor laser of central station, polarization controller, optical phase modulator, optical comb fiber, optical QPSK modulator, optical branching unit/combining unit, optical detector of base station, narrow band band-pass filter, millimeter wave amplifier and millimeter wave antenna. Its optical modulating method for obtaining QPSK modulated millimeter wave signal is also disclosed.

The invention provides terminal equipment. The terminal equipment comprises a feed source, a metal frame and radiation pieces; at least two grooves are formed in the outer side surface of the metal frame, and two through holes are formed in each groove; each groove is internally provided with the radiation piece; the metal frame is grounded; two antenna feed points are arranged on each radiation piece, and the feed source is connected to one feed point through one through hole, and the antenna feed points in each groove correspond to the through holes in a one-to-one correspondence mode; and each radiation piece is insulated from the corresponding groove through a non-conductive material. At least two grooves and the radiation pieces arranged in the grooves, and the feed source are equivalent to a millimeter wave array antenna of the terminal equipment, and the metal frame also can be a radiation body of a non-millimeter wave communication antenna, so that the accommodating space of the millimeter-wave antenna is saved, and the size of the terminal equipment can be reduced.