2459results about "Waveguide type devices" patented technology

The invention discloses a linear polarization in-band scattering reconfigurable radiation time-sharing regulation array antenna, which belongs to the technical field of antenna engineering, and comprises an antenna unit and a one-to-sixteen power divider, the antenna unit is connected with the one-to-sixteen power divider, and the antenna unit is connected with the one-to-sixteen power divider. The antenna unit comprises a first radiation patch, a first dielectric substrate, a second radiation patch, a second dielectric substrate, a feed coupling branch knot, a feed metal column, a third dielectric substrate, a perforated metal floor and a fourth dielectric substrate, and a first PIN tube, a second PIN tube, a feed transmission line, a direct current bias device, a reflective phase shifter and a low-pass filter are arranged at the bottom of the fourth dielectric substrate; the direct-current bias device is connected with the reflection type phase shifter and the feed transmission line through the low-pass filter, and the feed metal column sequentially penetrates through the third dielectric substrate, the perforated metal floor and the fourth dielectric substrate and is connected with the feed transmission line. According to the invention, the normal radiation efficiency of the antenna can be ensured, and the reconfigurability of antenna scattering can be effectively improved.

According to the capacitance-enhanced circular isolator structure provided by the invention, common-ground electric connection is realized by forming a ground metal boss structure, the distance between a grounding metal and a multi-path impedance adding structure is remarkably reduced, the ground capacitance of the multi-path impedance adding structure is remarkably improved, and meanwhile, bandwidth expansion is realized through capacitance-inductance cooperative tuning; a second-order LC matching network is adopted in three radio frequency ports, a slotting part of a matching capacitor can enable a matching inductor and the matching capacitor to share space to a certain extent, so that the size of the matching network is effectively reduced, a first-order LC matching network is adopted in an absorption port, impedance matching of the absorption port is realized under the condition that only a single resistor is added, and the impedance matching performance of the absorption port is improved. The size of the matching network can be reduced while a good absorption effect is achieved, and the size of the non-reciprocal central junction structure can be reduced; in addition, the first non-reciprocal central junction structure and the second non-reciprocal central junction structure are subjected to conjugate matching by adopting an L-C-L type matching network, so that good isolation performance is realized.

The invention provides a pilot frequency combiner and a multi-system access platform, the pilot frequency combiner comprises a first substrate waveguide resonant cavity, the first substrate waveguide resonant cavity is provided with at least two input feed line ends, the at least two input feed line ends are used for introducing excitation signals of different information sources, a second substrate waveguide resonant cavity is stacked on the first substrate waveguide resonant cavity, and the second substrate waveguide resonant cavity is used for feeding excitation signals of different information sources. The second substrate waveguide resonant cavity is provided with an output feeder end, and the second substrate waveguide resonant cavity and the first substrate waveguide resonant cavity share a cavity wall; the common cavity wall is provided with at least two through coupling holes, and the coupling holes are communicated with the first substrate waveguide resonant cavity and the second substrate waveguide resonant cavity, so that excitation signals input by the at least two input feeder line ends are transmitted to the second substrate waveguide resonant cavity, and are output to an external antenna radiation end after being combined by the output feeder line end. According to the pilot frequency combiner provided by the invention, the isolation degree of multi-band signals is relatively good, the frequency expansibility is also good, and the design flexibility is relatively high.

The invention relates to the technical field of microwave ferrite devices, and discloses a double-section microstrip circulator which comprises a magnetic conductive sheet, a ferrite gyromagnet and a resistor, the ferrite gyromagnet and the resistor are arranged on the upper surface of the magnetic conductive sheet, a circuit is additionally arranged on the upper surface of the ferrite gyromagnet, and the circuit is connected with a microstrip filter; the ceramic chip is arranged on the upper surface of the circuit, and samarium cobalt is additionally arranged at the top end of the ceramic chip, according to the two-section microstrip circulator, through the arrangement of a combined structure of the magnetic conductive sheet, the ferrite gyromagnet, the circuit, the microstrip filter, the ceramic chip, the samarium cobalt and the resistor, the isolation degree can be effectively improved, and the requirement of a system for high isolation is met; the microstrip filter in circuit connection can improve the second harmonic characteristic and improve the problem that the second harmonic of a conventional microstrip circulator is poor; the ferrite gyromagnet is used as a gyromagnet material, and is combined with a double-section circuit, so that the characteristic of low emission loss can be realized, and the circulator is small in size, light in weight and relatively high in reliability due to the integral structural design.

The invention relates to an SPnT surface-mounted microwave mechanical switch, and relates to the technical field of microwave switches, the microwave mechanical switch comprises a metal substrate, a plurality of micro coaxial transmission lines are arranged in the metal substrate, the length direction of the micro coaxial transmission lines is arranged along the thickness direction of the metal substrate, and the two ends of the micro coaxial transmission lines penetrate through the metal substrate; the radio frequency communication mechanism comprises a plurality of radio frequency reeds, one radio frequency reed is correspondingly arranged between every two adjacent micro coaxial transmission lines, the radio frequency reeds and the metal substrate are arranged in parallel at intervals, and linkage pieces are arranged on the radio frequency reeds; the electromagnetic driving mechanisms and the radio frequency reeds are arranged in a one-to-one correspondence mode, the electromagnetic driving mechanisms are connected with the corresponding linkage pieces, and the electromagnetic driving mechanisms are used for driving the radio frequency reeds to be in lap joint with the two corresponding micro-coaxial transmission lines. The microwave mechanical switch provided by the invention can be suitable for application scenes with relatively high requirements on high-frequency performance.

The invention discloses a radio frequency coaxial switch guide system with a precise limiting structure, belongs to the technical field of coaxial switches, and solves the problems of low high-frequency signal transmission efficiency and poor reliability caused by inaccurate reed displacement control in the prior art. The radio frequency coaxial switch guide system comprises a base, a long reed assembly, a short reed assembly, a connector seat and a connector. The base is provided with an outer side air cavity groove and an inner side air cavity groove, and structural support and installation reference are provided. The long reed assembly is installed in the outer side groove, and long-path transmission is achieved. The short reed assembly is installed in the inner side groove, and short-path transmission is achieved. The connector seat is provided with the connector and provides impedance matching, and is connected with the base to form a system frame; and the connector realizes input and output of external signals. Through the combination of a precise limiting structure and impedance matching design, the displacement deformation of the reed is effectively controlled, and the high-frequency signal transmission efficiency and the system reliability are remarkably improved.

Radiating elements comprise a first dipole radiator that includes a first dipole arm and a second dipole arm, a second dipole radiator that includes a third dipole arm and a fourth dipole arm and first through fourth electromagnetic bandgap structures that are coupled to distal end portions of the respective first through fourth dipole arms.

The invention belongs to a testing and processing method, and provides a single-probe non-contact dielectric material testing and processing integrated system and a single-probe non-contact dielectric material testing and processing integrated method in order to solve the technical problems of poor real-time performance and controllability and low production efficiency of the existing dielectric material testing and processing technology. Comprising a controllable objective table, a resonant cavity single probe assembly, a programmable multi-way switch and a control unit, a single epitaxial microwave resonant cavity probe is adopted as a core component, and rapid switching and regulation of the resonant cavity single probe assembly, a vector network analyzer and a program control microwave signal generation and regulation device are realized through the programmable multi-way switch. By means of the testing and processing integrated system, non-contact type dielectric constant dynamic measurement and microwave processing can be alternately completed.

A magnetless cryogenic circulator is developed that has three identical resonators in three branches. Each branch connects two ports and each resonator has a capacitor connected across a tunable inductor. A set of tunable inductors modulated with modulation signals that have a relative phase of 0°, 120° and 240° provided through a circuit. A microstrip delay line for providing the modulation signal to the three resonators, wherein the resonators are modulated in time such that the degeneracy of the two inherent counter-rotating modes is lifted, achieving a non-reciprocal signal routing. All capacitors and inductors are monolithically integrated and fabricated using a multi-layer Nb-based process with Nb / AlOx / Nb JJs.

The dielectric filter with the built-in negative coupling structure comprises a dielectric block, a conductive layer and the negative coupling structure, at least two resonance holes are formed in the dielectric block, the conductive layer is laid on the surface of the dielectric block and the inner walls of the resonance holes, and the negative coupling structure is arranged between two adjacent resonators divided by the two resonance holes. The negative coupling structure comprises the two conducting strips which are arranged in parallel at an interval and the metalized via hole for connecting the two conducting strips, and the conducting strips and the metalized via hole are embedded in the dielectric block and are not connected with the resonance hole and the conducting layer, so that coupling can be realized in the dielectric block, exposure is not needed, and the strength is not reduced; according to the manufacturing method of the dielectric filter, the defects of deformation, local collapse and the like generated during firing can be avoided, the size of the dielectric filter can be greatly reduced, the requirement for miniaturization is met, the conducting strips and the metalized via holes are arranged in a prefabrication machining mode, the machining precision is high, the zero point position control is accurate, implementation is easy, and the yield is high.

The invention provides an on-chip terahertz band-pass filter based on an artificial surface plasmon high-order mode, and the on-chip terahertz band-pass filter comprises a dielectric substrate, a feed microstrip line, a first transition structure, a short-branch artificial surface plasmon transmission region, a second transition structure, and a long-branch artificial surface plasmon transmission region. Feed microstrip lines are arranged at the two ends of the front face of the dielectric substrate respectively, each feed microstrip line is sequentially connected with a first transition structure, a short-branch artificial surface plasmon transmission area and a second transition structure, and a long-branch artificial surface plasmon transmission area is located in the middle of the front face of the dielectric substrate. Two ends of the long branch artificial surface plasmon transmission region are respectively connected with a second transition structure, and the whole back surface of the dielectric substrate is covered with a metal layer as a metal ground; the wide-stop-band microstrip antenna has the advantages of being wide in stop band, easy to machine, small in transmission loss and small in crosstalk, does not need punching operation, and is convenient to machine.

The invention discloses a C wave band reflection type phase shifter based on a cross-direction coupling line coupler, and belongs to the field of wireless communication and digital signal processing, the reflection type phase shifter is designed based on the cross-direction coupling line coupler, and compared with an existing branch line coupler and an existing Lange coupler, the C wave band reflection type phase shifter has the advantages of being small in size, low in insertion loss, wide in broadband and the like. A digital phase shifter used by a traditional phased-array antenna can be replaced, and the pain point problems of high cost, high power consumption and the like of the traditional phased-array antenna are solved; besides, the reflective phase shifter provided by the invention can be integrated on a PCB, has the advantages of being easy to process, low in cost, small in size and the like, is easy to integrate with a planar printing phased array antenna, and realizes miniaturization and low cost of the phased array antenna.

A filter module is disclosed. The filter module includes a first ground layer, a second ground layer disposed so as to be spaced apart from the first ground layer, a first conductive pattern layer disposed between the first ground layer and the second ground layer, a second conductive pattern layer disposed on one side of the first ground layer or the second ground layer, and a via interconnecting at least two of the first ground layer, the second ground layer, the first conductive pattern layer, and the second conductive pattern layer.

The invention relates to an antenna device comprising a quad-ridged waveguide, an open end of which is configured to act as a radiating aperture, and an orthomode transducer, OMT, configured to couple the quad-ridged waveguide to two feed structures.

The invention provides a dielectric waveguide filter, a construction method and a dielectric waveguide duplexer. The construction method of the dielectric waveguide filter comprises the following steps: selecting a dielectric material based on a given target passband index; establishing a matrix four-mode dielectric waveguide resonator, and adjusting the size of a rectangular dielectric waveguide to enable the resonant mode frequency to reach a target frequency band; carrying out electromagnetic field distribution analysis on a single four-mode dielectric waveguide resonator with a set size, positioning the distribution position of a resonance mode according to the distribution condition of an electromagnetic field, and respectively embedding four blind holes in the position where the electromagnetic field is strongest in distribution so as to realize polarization fixation and frequency regulation and control on the resonance mode; selecting a coupling topology to construct a dielectric filter based on frequency regulation and control of the four-mode dielectric waveguide resonator; the additional coupling blind holes are added on the basis of the coupling topological structure so as to regulate and control the mutual coupling between the adjacent resonators. According to the technical scheme, the problem that the size of a filter in the prior art is large is effectively solved.

A phase shifter, a phase shifter array, an antenna array and an electronic device are provided and belong to the field of communication technology. The phase shifter includes: first and second dielectric substrates opposite to each other, a first transmission line and a second transmission line on a side of the first dielectric substrate close to the second dielectric substrate, patch electrodes on a side of the second dielectric substrate close to the first dielectric substrate, and a tunable dielectric layer between a layer where the transmission lines are located and a layer where the patch electrodes are located; wherein orthographic projections of two ends of each patch electrode on the first dielectric substrate overlap with orthographic projections of the first and second transmission lines on the first dielectric substrate, respectively; and at least two of the plurality of patch electrodes are connected to different first bias voltage lines.

The invention provides a liquid crystal phase shifter, an antenna device and an antenna system, and relates to the technical field of communication. The liquid crystal phase shifter comprises a first dielectric substrate, a grounding metal layer, a dielectric functional layer, a micro-strip signal line and a second dielectric substrate which are stacked in sequence, the grounding metal layer is provided with a plurality of groups of grid structures which are arranged at intervals, and each group of grid structure comprises a plurality of grids which are distributed at intervals; and the length direction of the micro-strip signal line is parallel to the arrangement direction of the plurality of groups of grid structures. In the embodiment of the invention, the defected ground structure is formed by the plurality of groups of grid structures on the grounding metal layer, so that a relatively wide microstrip signal line can be conveniently arranged, and a relatively thin dielectric functional layer can be arranged under the condition that the characteristic impedance of the liquid crystal phase shifter is ensured, so that the miniaturized liquid crystal phase shifter is realized; in addition, when phase shifting is carried out based on the liquid crystal phase shifter, the thinner dielectric functional layer is convenient for reducing loss and improving response speed, so that the phase shifting performance of the liquid crystal phase shifter is improved.

An antenna assembly, which includes one or more radiating element arrays and at least one dielectric isolator for the one or more radiating element arrays, wherein, the dielectric isolator is configured to tune the phase of a coupling signal between the radiating elements so as to at least partially eliminate coupling interference between the radiating elements. As a result, the radiation pattern of the antenna can be improved. The present disclosure also provides a base station antenna having the antenna assembly.

The present invention belongs to the field of electromagnetic functional devices, and specifically relates to a fin-line terahertz multi-phase shifter based on a gallium arsenide diode, comprising: a rectangular waveguide input port, a substrate, a rectangular waveguide-fin-line transition structure, a fin-line structure, a probe-type microstructure phase shifter unit, its feeding opening portion, a fin-line-rectangular waveguide transition structure, and a rectangular waveguide output port. The present invention addresses the problems of the existing terahertz wave phase modulator having few phase shifting technical solutions, large insertion loss during phase shifting, a small phase shift range, a large device size, and low integrability. By controlling the on-off of the diode on the probe-type microstructure phase shifter unit by voltage, the perturbation intensity of the probe on the fin line is changed, so that the equivalent dielectric constant of the fin line changes, thereby achieving the phase shift of the terahertz wave; then, by superimposing the phase shifters in a centrally symmetrical and parallel arrangement, a low-insertion-loss multi-bit terahertz wave phase shift is finally achieved, ensuring a good working state and promoting the development of terahertz phase control technology.

The invention discloses a base station antenna, a radiating element and a phase shifter assembly. A base station antenna includes: a radiating element including a feed rod and a radiator mounted on the feed rod; the phase shifter assembly comprises a phase shifter cavity, and the wall, close to the feed rod, of the phase shifter cavity is provided with a through hole corresponding to the feed rod; and a phase shift circuit mounted within the phase shifter cavity wherein the feed pole is configured to be fixed relative to the phase shift circuit and the first conductor feature of the feed pole is directly electrically connected through the through-hole with the second conductor feature of the phase shift circuit.

The invention discloses a blind connection radio frequency coaxial switch which is composed of a low-frequency connector, a printed board assembly, an electromagnetic assembly, a microwave assembly, a TNC type jack connector, an N type jack connector and a C type jack connector. The electromagnetic assembly and the microwave assembly are arranged below the printed board assembly, the microwave assembly is provided with three independent cavities, the TNC jack connector, the N-type jack connector and the C-type jack connector are respectively connected with the three cavities, the N-type jack connector is a radio frequency common end, the C-type jack connector is a radio frequency normally closed end, and the TNC jack connector is a radio frequency normally closed end. The TNC type jack connector is a radio frequency normally open end; according to the invention, the blind connection function of the radio frequency coaxial switch is realized, the interconnection efficiency is high, and the connection error risk is avoided.

The invention discloses a rectangular waveguide sealing window structure for realizing broadband transmission, which belongs to a microwave signal detection device and comprises a first rectangular waveguide cavity, a second rectangular waveguide cavity and a rectangular dielectric block arranged between the first rectangular waveguide cavity and the second rectangular waveguide cavity, the first rectangular waveguide cavity comprises a first rectangular waveguide shell and two first stepped transition structures embedded into an inner cavity of the first rectangular waveguide cavity, and the second rectangular waveguide cavity comprises a second rectangular waveguide shell and two second stepped transition structures embedded into the second rectangular waveguide shell. The opposite side faces of the two first stepped transition structures and the two second stepped transition structures are provided with identical tooth-shaped steps, the second rectangular waveguide shell is further internally provided with an installation cavity communicated with the second I-shaped sliding groove, the two waveguide cavities are connected through screws, and the rectangular dielectric block is fixedly installed in the installation cavity. The vertically symmetrical multi-stage stepped impedance matching network provided by the invention realizes excellent transmission performance with low voltage standing-wave ratio in a wide frequency band, and is suitable for a millimeter wave system with high power and wide frequency band.

The invention relates to an anti-interference high-selectivity omnidirectional planar filtering antenna, a filtering processing method and application, and the planar filtering antenna comprises a metal radiation layer, a first dielectric substrate, a first coupling layer, a second dielectric substrate and a second coupling layer which are sequentially stacked. The second dielectric substrate is provided with a plurality of metalized through holes which are distributed in an annular array mode and define a substrate integrated cavity with the first coupling layer and the second coupling layer, the metalized through holes divide the second coupling layer into an inner side patch and an outer side ring piece, and the inner side patch is evenly provided with a plurality of resonance grooves; and a feed probe penetrating and extending to the second dielectric substrate is arranged at the center of the bottom of the metal radiation layer. According to the invention, the substrate integrated waveguide technology is adopted, the substrate integrated cavity is formed, and a high-selectivity filtering effect is realized by utilizing the characteristic of high Q value, so that the interference of out-of-band signals is effectively inhibited, and the advantages of the patch antenna and the substrate integrated cavity are effectively combined.

The present disclosure relates to a filter for a communication device including: a notch-forming portion formed to extend in a predetermined direction from any one of resonant elements: a base portion, a resonant leg portion, or a resonant plate, particularly to enable multi-pass coupling, wherein at least the resonant elements are provided to be fixed to a filter housing after being manufactured from a single base material plate through press and folding processes, thereby reducing the complexity of the filter and enabling implementation of various filter functions.

A device for switching a differential signal includes an input port, a first output port, a second output port, a first micro electromechanical system (MEMS) switch, and a second MEMS switch. The first and second MEMS switches selectively couple the input port to either the first output port or the second output port. The differential input port is separated into two single-ended paths. One single-ended path is switched through the first MEMS switch, and the other single-ended path is switched through the second MEMS switch. The single-ended paths are spatially matched with respect to length and orientation, and are at least partially distributed through at least two layers of electrical conductors, with adjacent layers of electrical conductors separated by electrically insulating layers.

The invention provides a high-isolation dual-band substrate integrated waveguide filter crossing device and a working method thereof. Comprising a dielectric layer (2), a top metal layer (1) located on the upper surface of the dielectric layer (2), a middle metal layer (3) located in the dielectric layer (2), a bottom metal layer (4) located on the lower surface of the dielectric layer (2), a first metalized through hole array (5), a second metalized through hole array (6) and a third metalized through hole array (7). The first metalized through hole array (5) penetrates through the dielectric layer (2) and is connected with the top metal layer (1), the middle metal layer (3) and the bottom metal layer (4); the second metalized through hole array (6) is connected with the top metal layer (1) and the middle metal layer (3); the third metalized through hole array (7) is connected with the bottom metal layer (4) and the middle metal layer (3); by applying the technical scheme, dual-band filtering response can be realized.

A wireless communication system includes a transmitter, a plurality of passive substantially linear medium portions including one or more first portions and a second portion, one or more passive substantially nonlinear medium portions disposed proximate the substantially linear medium portions, and for each first portion, a dielectrically lossy or magnetically lossy first material disposed on the first portion. When the transmitter transmits first and second radio waves, the substantially linear and nonlinear medium portions receive the first and second radio waves and generate first and second signals propagating therein, where at least one intermodulation signal is generated in the one or more substantially nonlinear medium portions from the first and second signals, and the one or more first materials reduces the generation of the at least one intermodulation signal by at least 2 dB.

A phase shifter (100) with controllable attenuation and a method for controlling the phase shifter is disclosed, the phase shifter (100) comprising a plurality of transmission line segments (120, 220) coupled in series, wherein each said transmission line segment (120, 220) comprises an attenuation circuit (130, 230), selectively couplable between a signal line (126, 222) of the transmission line segment (120, 220) and ground to selectively attenuate a signal propagating through the transmission line segment (120, 220). Each transmission line segment (120, 220) is switchable between a first configuration providing a first phase shift for a signal propagating through the transmission line segment (120, 220) and a second configuration providing a second phase shift, greater than said first phase shift, for a signal propagating through the transmission line segment (120, 220).

Aspects of the subject disclosure may include, for example, receiving, by a double trombone shifter device, signals relating to one or more crossed-dipole radiating elements of an antenna system, performing, by the double trombone shifter device, polarization rotation of the signals to derive output signals having polarizations that are rotated in a manner that results in a virtual physical rotation of the one or more crossed-dipole radiating elements, and providing, by the double trombone shifter device, the output signals to enable avoidance of interference. Other embodiments are disclosed.