50 results about "Waveguide aperture" patented technology

The invention relates to an ultra-wideband millimeter-wave linearly-polarized waveguide aperture array antenna, belonging to the technical field of microwave detection. In the waveguide aperture array antenna, a multi-power-dividing feed network is combined with a waveguide aperture radiation array, and an antenna is simulated and designed by applying the thought of integral design of an antenna feeder system. By changing the amplitude of each port of an HT power divider network, the characteristics of low standing wave, high grain, low minor lobe and wide wave beam are realized, an ultra-large frequency bandwidth is realized, and the ratio of the frequency bandwidth to the central frequency is up to 6.6 percent. On the aspect of structure, the entire antenna comprises a bottom plate, a feed network and a radiation portion, thereby greatly reducing the workload of simulation and machining, reducing the processing error to the maximum extend, reducing the size and weight of the antenna, and achieving adaptation to various occasions and experiments. The antenna is capable of receiving / transmitting signals at the same time, is suitable for Ka waveband communication and detection, and is suitable to be applied to communication systems, navigation systems and radar systems of various fixed and movable platforms.

A dual-band stacked electromagnetic band gap (EBG) electronically scanned array (ESA) has a first aperture with a waveguide element spacing of less than λ / 2 and a length to provide about 360° of upper frequency phase shift. A second aperture is stacked on the first aperture and has an element spacing of less than λ / 2 at a lower frequency and a length such that when summed with the first aperture length about 360° of lower-frequency phase shift is provided. The second aperture comprises metal slats perpendicular to EBG slats to form an equivalent waveguide element with a broadwall dimension to support a TE10 mode at the upper frequency. The second aperture may also comprise metal slats and alternating frequency selective surface (FSS) slats with perpendicular EBG slats lengthening the broadwall at the upper frequency. The EBG slats provide lower-frequency phase shifting in both embodiments.

ABSTRACTA transceiver (20) for a millimeter wave signal, consisting of a PCB (140) having PCB microstrip lines (141) and PCB waveguide apertures (159), and one or more transmitter modules (22) and one or more receiver modules (24, 26, 28) mounted on the PCB. Each module has a single microstrip-waveguide transition (34, 48) and a microstrip-microstrip transition (47, 49). The microstrip-waveguide transition of each module couples to one of the PCB waveguide apertures via a PCB-module waveguide-waveguide transition (167). The microstrip-microstrip transition of each module couples to one of the PCB microstrip lines via a PCB-module microstrip-microstrip transition (165). The PCB-module transitions are low tolerance, facilitating implementation of the transceiver.

The invention discloses a waveguide aperture antenna which comprises a plurality of substrate-integrated waveguide aperture sub-arrays based on H-plane Taylor distribution, one or more feed networks and a metal cylinder, wherein the waveguide aperture sub-arrays form an ultralow minor lobe directional diagram on the waveguide aperture antenna H plane; the feed networks are correspondingly connected with the waveguide aperture sub-arrays and are used for feeding signals with unequal power and different phases into the connected waveguide aperture sub-arrays respectively and controlling a waveguide aperture antenna E-plane array to form an E-plane Taylor distribution array of an E-plane ultralow minor lobe directional diagram; and the waveguide aperture sub-arrays and the feed networks are connected on the circumference of the metal cylinder by surrounding. The waveguide aperture antenna solves the problem that anti-interference capability and working efficiency of a conformal substrate-integrated waveguide aperture antenna cannot meet higher requirements in the prior art.

An antenna apparatus for the reception of, and or transmission of, electromagnetic energy, the apparatus including a non-radiating dielectric waveguide aperture coupled to at least one dielectric rod antenna, which is electromagnetically coupled to a transmission line element.

An orthomode transducer includes a first waveguide section, a second waveguide section coupled to the first waveguide section, and a third waveguide section coupled to the first and second waveguide sections. The first waveguide section is configured to support the propagation of a signal having a first polarization, and includes a first waveguide aperture sized to communicate the signal having the first polarization therethrough. The second waveguide is configured to support the propagation of a signal having a second polarization which is orthogonal to the first polarization, the second waveguide section having a single internal septum and a second waveguide aperture sized to communicate the signal having the second polarization therethrough. The third waveguide is configured to support the propagation of either a signal having the first polarization or the second polarization, and includes a third waveguide aperture sized to communicate the signals having either the first or second polarization therethrough.

The invention relates to the technical field of a polarization sensitive array antenna sensor, in particular to conformal Vivaldi antenna-based composite polarization sensitive array device. The conformal Vivaldi antenna-based composite polarization sensitive array device is characterized in that a dielectric antenna cover is arranged, a connection ring is arranged at a bottom end of the antenna cover, a flexible dielectric substrate is arranged in the antenna cover, a dual-polarization radiator, a passive antenna and an active antenna are further arranged, a Vivaldi-shaped exciter of a cavitybacked dual-polarization waveguide aperture antenna is provided with a metal floor, a feeding microstrip, a dielectric substrate and a grounding semi-circular resonant cavity, and the impedance matching of the Vivaldi-shaped dual-polarization exciter is achieved by a joint effect of the semi-cylindrical resonant cavity and a rectangular waveguide cavity. The invention proposes a carrier-based conformal coplanar waveguide feeding ultra-wideband Vivaldi antenna structure, the integral design of the antenna cover and the antenna is achieved, and the conformal Vivaldi antenna-based composite polarization sensitive array device has the remarkable advantages of compact structure and the like and is applicable to engineering.

A dielectric constant waveguide measuring apparatus preferably comprises a rectangular waveguide aperture on each end with a width a and height b. The waveguide frame is preferably split to permit the waveguide to be opened for insertion of the unknown material into a middle reduced cross-sectional area portion of the waveguide frame. In one embodiment, a metal septum is inserted between two samples of the unknown material to thereby reduce the cross-sectional area of the waveguide aperture by splitting width a of the rectangular waveguide in half. The waveguide frame is closed and a frequency response of the waveguide is then measured. The dynamic dielectric constant of the unknown material is determined from the frequency of the lowest order minimum value of the frequency response of the waveguide apparatus wherein the unknown material has been inserted.

Provided is a waveguide feeder. The waveguide feeder includes: a probe aligned at a center of a waveguide aperture at a metal wiring layer of a semiconductor substrate to input and output an electric signal; and an open stub located at a contact surface of a waveguide flange on a ground surface of a semiconductor chip in order to form a ground path of the probe on a surface of the waveguide flange.

The invention discloses a frequency-reconfigurable waveguide aperture antenna based on dual horizontal PIN diodes and belongs to the field of antennae. The frequency-reconfigurable waveguide aperture antenna based on the dual horizontal PIN diodes mainly comprises a servo circuit, a programmable voltage source, a rectangular waveguide and a dual horizontal PIN diode, wherein the servo circuit is used for carrying out programming control on the programmable voltage source, so that the programmable voltage source outputs multiple voltages meeting programming requirements; the rectangular waveguide adopts a coaxial cable for feeding, 8-64 gaps are cut from a wide wall of the waveguide, and one dual horizontal PIN diode is arranged at each gap; and multiple voltages output by the programmable voltage source are connected with the dual horizontal PIN diodes, and on and off of different parts of the dual horizontal PIN diodes are controlled, so that the length, width and offset distance of each gap of the waveguide are controlled by virtue of the way, and the programmable control frequency-reconfigurable waveguide aperture antenna is realized. By applying the invention, the programmable frequency-reconfigurable waveguide aperture antenna is realized.

A transceiver (20) for a millimeter wave signal, consisting of a PCB (140) having PCB microstrip lines (141) and PCB waveguide apertures (159), and one or more transmitter modules (22) and one or more receiver modules (24, 26, 28) mounted on the PCB. Each module has a single microstrip-waveguide transition (34, 48) and a microstrip-microstrip transition (47, 49). The microstrip-waveguide transition of each module couples to one of the PCB waveguide apertures via a PCB-module waveguide-waveguide transition (167). The microstrip-microstrip transition of each module couples to one of the PCB microstrip lines via a PCB-module microstrip-microstrip transition (165). The PCB-module transitions are low tolerance, facilitating implementation of the transceiver.

The invention discloses a light display shielding apparatus, aiming at minimizing the imaging beam loss in a transmission process. The shielding apparatus comprises a shielding body, wherein, a beam device provided with a beam outlet and a host computer providing an image source for the beam device are arranged; a display screen arranged on the outer part of the shielding body; a fixing base which is provided with a through hole inside corresponding to the beam outlet and is fixed on the wall of the shielding body; at least one metal lens barrel which is connected with the fixing base and transmits the imaging beams of the beam device to the outside of the shielding body and is provided with a plurality of lenses inside. The invention guarantees the shielding function as waveguide apertures on one hand and minimizes the imaging beam loss in the transmission process on the other hand. The invention also discloses an electromagnetic shielding table adopting the structure and is suitable for sites where secrets need to be kept.

The invention discloses a 5G circularly polarized multi-beam antenna, comprising a Butler feed network (1), a SIW connection part (2) and four waveguide aperture antennas (3). The waveguide aperture antenna (3) comprises a rectangle feed waveguide (4) and a rectangular radiation waveguide (5), the first end of the rectangular feed waveguide (4) serves as an input end of the waveguide aperture antenna and connected to the SIW connection part (2). The second end of the rectangular feed waveguide (4) is connected to the rectangular radiation waveguide (5); the rectangular feeding waveguide (4) isinternally provided with a rectangular metal wall (6), and the rectangular metal wall (6) divides the rectangular feed waveguide (4) into upper and lower parts. The rectangular metal wall (6) extendstoward the inside of the rectangular radiating waveguide (5) and gradually disappears in a triangular manner, and a triangular metal wall (7) is formed inside the rectangular radiation waveguide (5).The 5G circularly polarized multi-beam antenna has the advantages of simple structure, easy processing, and good circular polarization axis performance.

The invention provides a shielding box structure and an environment experiment device. The shielding box structure comprises a shielding box body and a shield door arranged on the shielding box body; the shielding box body comprises a plurality of box body plates which are connected in a seamless welding way, a cavity structure comprising a box body opening is encircled by the plurality of box body plates, and the shield door is arranged on the box body opening in close way; and a plurality of waveguide apertures are uniformly arranged on the box body plate or / and the shield door. According to the technical scheme provided by the invention, interference signals can be shielded, the hot gas in the box can be rapidly discharged, so that the internal temperature of the box is consistent with the external temperature of the box rapidly.

An X-band wide beam circularly polarized antenna for a lunar rover mainly and structurally comprises a high-frequency coaxial socket (50 Omega, SMA or TNC), a coaxial waveguide converter, a circular polarizer, an antennal shield with a beam broadening device and an antenna support. A high-frequency signal is fed via a high-frequency cable and is converted into a waveguide transmission signal via the coaxial waveguide converter, and a linear polarization signal is converted into a circular polarization signal via the circular polarizer. Electromagnetic waves are radiated from a waveguide aperture, the beam is broadened via the antenna shield, and a circular polarization directional diagram is formed. The X-band wide beam circularly polarized antennal overcomes detects that the beam width of the conventional antenna is not enough, the back lobe of a wide beam antenna is higher, and the antenna is easily interfered by the environment. The omnidirectional directional diagram of the antenna can satisfy demand of the rover for ground communication with various poses, and very low back lobe radiation lowers the influence of the rover mounting environment on the radiation performance of the antenna.

The invention relates to a Ka-band low-consumption compact feed network. The network comprises a waveguide aperture converter, four E bent waveguides, an E-plane single T and two E-plane variation single T. The waveguide aperture converter is sequentially connected with the two E bent waveguides and the E-plane single T to form a 1: 2 combiner / distributor, and the waveguide aperture converter forms a waveguide input port. One ends of the other two E bent waveguides are connected with the two ends of the E-plane single T respectively, and the other ends are connected with the two E-plane variable single T respectively to form two 1: 2 combiners / distributors. The two E-plane variable single T form four output ports, and a quartered synthesizer / distributor from the waveguide aperture converter to the E-plane variation single T is formed through cascading. According to the invention, the synthesis / distribution function of the network is realized by the E-plane single T and the variation E-plane T, and the broadband characteristic of the T is realized by adjusting the matching mode.

The invention discloses a Ku-band dual-polarization radiometer antenna feed, which comprises a corrugated conical horn antenna, a square-circle converter and an orthogonal mode coupler which are integrally connected through 3D printing. The orthogonal mode coupler comprising two orthogonal pyramids, 2 rectangular waveguide and 1 square waveguide, the circular port of the square-circle converter isconnected with the circular port of the corrugated conical horn antenna, the square port is connected to one end of the square waveguide of the orthogonal mode coupler, the other end of the square waveguide of the orthogonal mode coupler is connected with a square port of a horizontal corner pyramid, The rectangular aperture of the horizontal corner pyramid is connected with the first rectangularwaveguide, the vertical corner pyramid is orthogonal to the horizontal corner pyramid in the middle of the horizontal corner pyramid, the intersection is a rectangular aperture, the other end of thevertical corner pyramid is connected with the second rectangular waveguide, and the other waveguide apertures of the two rectangular waveguides are used as output ports respectively. The antenna, theconverter and the coupler of the invention are integrally designed without assembly, and the 3D printing material is light in quality and low in cost.

The invention relates to an electromagnetic shielding room shielding network wire passing wall device, which comprises a network shielding cable (2); a section of waveguide (3); the waveguide (3) passes through the shielding wall (1), and There are fixed copper mesh spacers (4) on both sides respectively; the network shielded cable (2) passes through the waveguide (3); at both ends of the waveguide (3), the network shielded cable (2) is made of copper The net (5) replaces the insulating sheath and is tightened by the center chuck (6); the beneficial effect of the present invention is: due to the use of shielding grounding and waveguide principles, a central waveguide with an outer diameter of 10 mm is used to pass through the central waveguide hole of the shielding steel plate and the shielding The outer diameter of the shielding layer of the network cable is matched, and the dressing is directly passed through the shielding steel plate. The structure and process are simple. In related projects, as many as 400 shielded network cables are used to pass through the wall, and the shielding performance reaches the corresponding confidentiality standards and military standards. Can achieve 100dB shielding effectiveness.

A module substrate includes a surface layer to which a rectangular waveguide structure having a waveguide aperture is to be connected; metal layers stacked with a dielectric layer between each pair thereof and including a first metal layer that includes a transmission line and a coupling element at a portion of the transmission line and a second metal layer positioned further than the first metal layer from the rectangular waveguide structure; and vias connecting the adjacent metal layers. The surface layer has a first opening facing the waveguide aperture. The first opening surrounds the coupling element in plan view from the surface layer. A dielectric layer region surrounded by some of the vias is formed within a projection area of the first opening between the first and second metal layers. The region has a size smaller than the waveguide aperture in the plan view.

The embodiment of the invention provides a microwave communication equipment, an adapter and a communication system, wherein, the microwave communication equipment comprises an antenna and a communication interface module connected with the antenna; the communication interface module comprises a first connecting part microwave interface, a first waveguide aperture and a first connecting area, wherein, the first connecting part of microwave interface is used for being connected with a second connecting part of an external microwave interface carried with a second waveguide aperture in a matching manner; the first waveguide aperture is positioned on the first connecting part of microwave interface, and is used for butting-joint with the second waveguide aperture so as to transmit microwave communication signals between the antenna and the second waveguide aperture; and the first connecting area is positioned between the first connecting part of the microwave interface and the first waveguide aperture and is used for connecting the first waveguide aperture with an external feeder line for transmitting the microwave communication signal. By the connection of the microwave interface connecting part and the waveguide aperture in the microwave communication equipment and the connection of the connecting area and the external feeder line, the universality of the microwave communication equipment is improved.

A waveguide aperture beam conditioner includes an input port section having an input port that receives an aberrated laser beam, an elongated waveguide body formed from an opaque material and having internal bore formed therethrough, and an output port that receives the waveguided beam and outputs a conditioned output laser beam. An inner surface of the internal bore forms a waveguide for the focused output beam and thereby generates a waveguided beam.

An Electronically Scanned Antenna (ESA) element and method for same, is provided. The element includes at least two RF probe pairs operating at different frequencies in a single waveguide aperture. One RF probe pair operates at a higher frequency than the other RF probe pair; and the RF probe pairs generate circular polarized waves.

A slot array antenna includes a waveguide slot body and a dielectric slab. The waveguide body includes one or more walls that define a waveguide aperture, the waveguide aperture extending along a longitudinal axis of the waveguide slot body. The waveguide slot body includes a plurality of slots disposed on one or more walls of the waveguide slot body. The dielectric slab is disposed within the waveguide aperture and extends along the longitudinal axis of the waveguide slot body. The dielectric slab is rotatable about the longitudinal axis within the waveguide aperture.

Provided is a dual-band multimode antenna feed for a high-frequency band and a low-frequency band. The feed includes four high-frequency waveguide ports, where each high-frequency waveguide port is connected to a respective high-frequency input / output waveguide. Each high-frequency input / output waveguide includes a high-frequency waveguide aperture facing a first section for mixing electromagnetic modes in the E-plane. The first section is connected to a second section for mixing electromagnetic modes in the H-plane. The feed further includes a low-frequency waveguide port connected to a low-frequency input / output waveguide. A filter is arranged inside the first section to be transparent for plane wave modes exhibited at lower frequencies and reflecting for plane wave modes exhibited at higher frequencies.