14 results about "Aperture coupling" patented technology

A Butler matrix includes non-aperture couplers and phase shifters on a first substrate, non-aperture couplers and phase shifters on a second substrate, and a ground plane separating the first substrate from the second substrate. The non-aperture couplers and the phase shifters on the first substrate are connected to the non-aperture couplers and the phase shifters on the second substrate using vias extending from the first substrate to the second substrate and passing through the ground plane. The Butler matrix is a 2N×2N matrix, and N is an integer greater than or equal to 4.

The application discloses a millimeter wave filtering antenna and an intelligent auxiliary design method, the antenna adopts a differential aperture coupling feeding mode to realize relatively wide impedance matching bandwidth and relatively high gain, low-frequency and high-frequency radiation zero points are respectively generated by adding a short-circuit patch and slotting a radiation patch, and out-of-band gain suppression is realized. A planar inverted F antenna and added parasitic patches are used to respectively improve the out-of-band suppression level of a low-frequency band and a high-frequency band. Deep learning is used on a machine learning algorithm, a proxy model of selected antenna structure parameters and corresponding performance parameters is established, the performance of an antenna with specific parameters is quickly predicted, a genetic algorithm is used to optimize the proxy model, an antenna structure corresponding to target performance parameters is quickly designed, and the application has the advantages of high efficiency, flexibility and scalability, helps to improve design efficiency and performance, reduces design cost, and the antenna structure has the characteristics of low loss, high gain and high reliability.

An optical system (100) for directing an image towards a user for viewing includes a light-guide optical element (LOE) (10) having parallel major external surfaces (11a, 11b) for supporting propagation of an image by internal reflection, a coupling-out arrangement for coupling out the image towards an eye of the user, and a coupling-in aperture. An image projector (114) includes an image generator (32) for generating an image, collimating optics (31) for collimating the image, and an image conjugate generator (20, 33, 34). The image projector is coupled to the coupling-in aperture so as to introduce both the collimated image and its conjugate image into the LOE prior to the images impinging on either of major external surfaces. The image conjugate generator may be a second image generator (33), or may employ one or more reflecting surface (22, 23, 24, 34) non-contiguous with the major external surfaces of the LOE.

The application discloses an ultra-wideband coupled patch antenna and a design method thereof, which comprises a top conductive layer, a ground plate and a bottom conductive layer; the top conductive layer comprises two driving patches, and two first coupled patches are arranged in parallel on the outer side of each driving patch; two second coupled patches are arranged on the front and back sides of each driving patch; the inner sides of the two driving patches are wrapped with two third coupled patches arranged vertically; in order to ensure the stability of the radiation pattern, only the driving patches and the second coupled patches are used as impedance adjustment patches; the ground plate is provided with a hole aperture coupling feed point, and the hole aperture coupling feed point is located at the center of the antenna; the bottom conductive layer comprises a bottom microstrip line, the bottom microstrip line is converted into a two-branch feed structure, and the two-branch feed structure transmits electromagnetic energy to the driving patches through the hole aperture coupling feed point. The application is based on a simple three-layer dielectric structure of coupling effect, and can reduce the processing cost and complexity of the antenna.

The present application relates to the field of laser communication, and particularly relates to a laser bidirectional detection system based on adaptive adjustment of light splitting ratio, comprising a transceiving common optical unit, an adjustable light splitting unit, a transmitting link unit, a receiving link unit and an intelligent control unit; the receiving link unit is used for receiving downlink laser; the transceiving common optical unit is used for realizing common aperture coupling and polarization state conversion of uplink laser and downlink laser; the adjustable light splitting unit is used for dynamically adjusting energy distribution ratio between uplink laser and downlink laser; the intelligent control unit is used for extracting and analyzing link state parameters of downlink laser, and deciding optimal energy distribution ratio between uplink laser and downlink laser; wherein, the link state parameters comprise received optical power, flicker index, background noise and bit error rate. The present application can realize dynamic optimal distribution of transceiving energy, significantly improve stability and availability of laser link under complex weather such as haze, turbulence and strong light interference, and has small volume, fast response and controllable cost.

The application relates to an antenna networking device, wherein a lateral reflecting plate of one multi-frequency antenna is arranged in parallel with a forward reflecting plate of another multi-frequency antenna, that is, lateral radiation units on the lateral reflecting plate of one multi-frequency antenna are networked with forward radiation units on the forward reflecting plate of another multi-frequency antenna, super multi-frequency networking is realized, that is, multiple radiation units of one operator can be arranged on different multi-frequency antennas, the height size of the antenna networking device is reduced, aperture coupling is reduced, and the antenna performance is improved; in addition, the lateral reflecting plate and the forward reflecting plate are arranged at an acute angle, and when multiple multi-frequency antennas are arranged in sequence and at intervals around the circumference of a site, the overall size is reduced, the wind load is reduced, the antennas can be arranged in a compact space, the requirements of multiple operators for antenna co-construction and sharing are met, and the construction, operation and maintenance costs are greatly reduced.

In one aspect, in general, an apparatus comprises: an optical receiver configured to receive optical waves over a receive aperture that comprises a plurality of sub-apertures coupled to different respective detectors, where each detector is configured to produce a digital signal based at least in part on a received optical wave; and circuitry configured to apply one or more phase shifts to a respective digital signal from each detector of the optical receiver where the one or more phase shifts are applied based at least in part on a first beam pattern that includes a plurality of intensity peaks at different respective angular positions, and determine respective amplitudes of optical waves corresponding to two or more angular positions of the first beam pattern based at least in part on the one or more phase shifts.

The invention provides a cavity single-aperture coupling field distribution equivalent excitation test method, device and system, and relates to the field of electromagnetic environment monitoring. The method comprises the steps that when the input power of a radiating antenna is gradually adjusted to first power, the target response of a monitoring probe in a tested cavity under a far-field irradiation test is acquired, and the tested cavity is a metal cavity; shortening the distance between the radiating antenna and the aperture on the tested cavity, and obtaining a first response of the monitoring probe in the tested cavity under the equivalent irradiation test when the input power of the radiating antenna is gradually adjusted to second power after the distance is shortened; and when the first response is equal to the target response, completing the equivalent excitation test process of the tested cavity. The test efficiency, scientificity and accuracy can be improved.

The invention discloses a double-folding substrate integrated waveguide self-isolation four-port filtering MIMO antenna, and relates to the technical field of wireless communication. According to the technical scheme, the antenna is characterized by comprising a plurality of double-folded SIW cavities, a patch radiator located on the top layer, aperture coupling structures located on the upper layers of the double-folded SIW cavities and coplanar waveguide feed structures located at the bottoms of the double-folded SIW cavities; wherein the plurality of double-folded SIW cavities are formed between the patch radiator and at least two groups of dielectric plates and metal surfaces, and the dielectric plates and the metal surfaces are sequentially superposed on the lower side of the patch radiator. According to the MIMO antenna system, the problems of low port isolation, insufficient integration and difficulty in consideration of filtering and radiation performance in an existing MIMO antenna system are solved, so that high isolation is realized, the isolation between ports exceeds 20dB, and the effect of effectively inhibiting channel interference is achieved.

To make design of an optical system (100) for directing an image towards a user for viewing compact.SOLUTION: The optical system includes: a light-guide optical element (LOE) (10) having parallel major external surfaces (11a, 11b) for supporting propagation of an image by internal reflection; a coupling-out arrangement for coupling out the image towards an eye of a user, and a coupling-in aperture. An image projector (114) includes an image generator (32) for generating an image, collimating optics (31) for collimating the image, and an image conjugate generator (20, 33, 34). The image projector is coupled to the coupling-in aperture so as to introduce both the collimated image and its conjugate image into the LOE prior to the images impinging on either of major external surfaces. The image conjugate generator may be a second image generator (33), or may employ one or more reflecting surface (22, 23, 24, 34) non-contiguous with the major external surfaces of the LOE.SELECTED DRAWING: Figure 3

There is provided an optical device, including a light-transmitting substrate having at least two parallel major surfaces, edges and an output aperture, an optical element for coupling light waves into the substrate to effect total internal reflection, a plurality of redirecting elements positioned outside of the substrate comprising at least two spaced-apart redirecting elements having a selectable laterally displaceable reflection-transmission ratio, and at least one reflecting surface having at least one active side located between the two major surfaces of the light-transmitting substrate for coupling light waves out of the substrate, wherein light waves trapped inside the substrate are coupled out from the substrate through the output aperture substantially inclined in relation to the normal to the substrate major surfaces, and are reflected from the redirecting elements into a viewer's eye, and wherein at least one of the redirecting elements is lateral displaceable in relation to another redirecting element.

This invention discloses a bandwidth-reconfigurable dual-polarized dielectric patch antenna for full-duplex communication. The antenna consists of a rectangular dielectric patch with a pair of grooves etched along its edges and two substrate layers. In the X-polarization direction, a single port is used to excite the fundamental mode TM. 10 mode and higher mode TE 12 This mode is used for broadband transmitter operation. For the Y-polarization direction, a differential feed structure is used to excite a degenerate TM. 01 Mode and Inversion™ 02 This mode is used for broadband receiver operation. A metal ground plane is placed between two substrates, and two sets of slots are etched on it for aperture coupling between the dielectric patch resonator and the metal microstrip line located at the bottom of the lower substrate. A variable capacitor is placed in the coupling slot in the Y-polarization direction to tune the operating bandwidth of the dielectric patch antenna in the Y-polarization direction. This gives the antenna advantages such as bandwidth reconfigurability, high isolation, low profile, and simple structure, making it promising for applications in full-duplex systems.

The invention discloses a high-gain magnetoelectric dipole antenna with a broadband greater than 100% based on aperture coupling feed, and solves the technical problems of broadband impedance matching, high-frequency mismatching and stable feed structure. According to the director, double-plane patches are adopted and are arranged in parallel at small intervals; according to the feed structure, a longitudinal slot, a multi-stage gradually-changing stepped dumbbell-shaped slot and a microstrip feeder form a cross-shaped orthogonal composition, broadband impedance matching is optimized, and probe interference is eliminated; the three sections of 90-degree bending type magnetic dipole patches cooperate with the electric dipoles to form a complementary type magnetoelectric dipole pair through a high-low difference design; the column-loaded T-shaped patch is compact and regular in structure, is coupled with a radiation structure, introduces a new resonance point at a low frequency, and enlarges the relative bandwidth. According to the antenna, the overall composite optimization design is adopted, cooperative work is achieved in a limited space, the excellent performance that the relative bandwidth is 108.7%, the peak gain is 11.1 dBi and the cross polarization level is lower than-30 dB is achieved, multiple communication frequency bands are covered, the good radiation characteristic is achieved, and the antenna is suitable for a 5G base station and a Wi-Fi 6 / 6E scene.

A jig for teaching substrate handling in a semiconductor processing system includes a verification pin with a pin width and a disc body. The disc body has a first surface, a second surface opposite the first surface, and a thickness separating the second surface from the first surface of the disc body. The first and second surfaces define a verification aperture coupling the first surface to the second surface of the disc body. The verification aperture has an aperture width equivalent to the pin width of the verification pin to teach a transfer position by slidably receiving the verification pin in the verification aperture and a verification pin seat defined in a load lock of the semiconductor processing system while supported by a substrate transfer robot within the semiconductor processing system. Semiconductor processing systems and methods of teaching substrate handling in semiconductor processing systems are also described.