3744results about "Waveguide type devices" patented technology

The invention discloses a multi-parameter measurement system and method for a power frequency non-partial discharge test transformer, and relates to the technical field of state monitoring of high-voltage test equipment and power equipment, and the system comprises a synchronous trigger unit which is connected to a power frequency voltage signal collection end and is used for detecting a zero crossing point of a power frequency voltage signal and generating a synchronous trigger signal, a power frequency period is divided into a plurality of sub-windows with equal phase angles. According to the multi-parameter measurement system and method for the power frequency non-partial discharge test transformer, the problem of phase mismatch of a power frequency signal and a high-frequency partial discharge signal in traditional multi-parameter measurement is effectively solved through a power frequency phase locked synchronous trigger mechanism and a dynamic noise suppression technology; and the positioning precision of the partial discharge source and the insulation defect diagnosis reliability are improved. The nanosecond-level time sequence error control is realized, and the power frequency coupling interference is inhibited while the details of the high-frequency pulse are kept by combining a phase correlation dynamic filtering strategy, so that the signal-to-noise ratio of the weak discharge signal is 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 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 discloses a suspended micro-strip high-power attenuator. The attenuator comprises a radiator, a radiating fin arranged on the bottom surface of the radiator, a mounting groove formed in the top surface of the radiator, at least two attenuation slices mounted in the mounting groove, and an elastic sheet arranged between the at least two attenuation slices and used for connecting the at least two attenuation slices in series, the first connector is arranged at the first end of the radiator and is electrically connected with the first ends of the at least two attenuation slices; and the second connector is arranged at the second end of the radiator and is electrically connected with the second ends of the at least two attenuation slices. According to the application, the attenuation slices with the attenuation circuit are connected in series through the connecting elastic sheets to obtain a required attenuation value, the radiator adopts a special structural design that the middle part is slotted, an attenuation network circuit formed by at least two attenuation slices is partially suspended, and the left side and the right side of the attenuation network circuit are clamped in the radiator mounting grooves; a part of heat of the attenuation piece is directly transmitted to the radiator for heat dissipation in a heat transmission mode, and the heat dissipation efficiency is improved.

The invention relates to a three-dimensional stacked high-power multi-channel dual-polarization airtight packaging T / R assembly, which comprises a power supply modulation layer, a multifunctional processing layer and a power amplifier low-noise amplifier layer which are sequentially stacked from bottom to top, and electrical interconnection among the three circuit layers and with the outside is realized by adopting the BGA solder balls. The three circuit layers adopt LTCC (Low Temperature Co-Fired Ceramic) or HTCC (High Temperature Coefficient Chip) to realize an integrated packaging structure with a cavity; the interior of the integrated structure is divided into a plurality of same independent cavities so as to accommodate circuits and structures of the channels; a signal transmission structure and a grounding through hole array are arranged in the cavity wall of the integrated structure, so that electrical interconnection, impedance matching and electromagnetic shielding inside and outside the package are realized; each cavity is sealed in an independent airtight mode through a metal cover plate. When necessary, a wave-absorbing material is added in the cavity to prevent self-excitation of the assembly. According to the invention, the product structure and the production process are simplified, the production efficiency, the packaging efficiency and the yield are improved, and the cost is reduced; the power capacity and the reliability of the product are improved, and the maintainability is good.

The embodiment of the invention provides a phase shifter and a base station antenna. The phase shifter comprises a fixed frame, a phase shifting strip line and a sliding medium. The fixed frame comprises a guide rail. The phase shift strip line is fixed on the guide rail. The sliding medium is in sliding connection with the guide rail and is separated from the phase-shifting strip line through the guide rail. The guide rail can guide the movement of the sliding medium relative to the phase-shifting strip line, thereby facilitating the improvement of the smoothness of the movement of the sliding medium relative to the phase-shifting strip line. As the sliding medium is separated from the phase-shifting strip line through the guide rail, and the sliding medium is not contacted with the phase-shifting strip line, friction between the sliding medium and the phase-shifting strip line is avoided in the process that the sliding medium moves relative to the phase-shifting strip line, the resistance of the sliding medium in the process of moving relative to the phase-shifting strip line is reduced, and the service life of the phase-shifting strip line is prolonged. The smoothness of the sliding medium relative to the phase-shifting strip line movement is further improved, the pulling force for driving the sliding medium relative to the phase-shifting strip line movement is reduced, and the requirement for a driving piece for driving the sliding medium relative to the phase-shifting strip line movement is lowered.

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 embodiment of the invention provides a feed network, an antenna device, an active antenna unit and communication equipment, and the feed network controls the phase state of a phase shifter through light, does not need to use a control line, enables the feed network comprising the phase shifter to adopt an inverted microstrip structure, and reduces the insertion loss between a radio frequency channel and an antenna.

The technology described herein is directed towards a design and implementation of a unit cell for a reconfigurable intelligent surface / reflectarray by incorporating reconfigurability within a phase-delay element of the unit cell. Reconfigurability is directly incorporated into the unit cell via a variable length phase delay line element and PCM-based (e.g., mmWave) phase shifter that determines the unit cell's phase shift by changing the length of the phase delay line element. One implementation is directed to a monolithic integration of the element using chalcogenide materials as switch elements with pulsed actuation to switch among different available lengths that determine the length of the phase delay line element, resulting in a significant reduction in power consumption, area saving, and digital reconfigurability.

The utility model belongs to the technical field of radio frequency switches, and particularly relates to a single-pole double-throw normally-open radio frequency switch with a load. The utility model discloses a radio frequency connector, which comprises a common terminal, two radio frequency terminals, two loads in one-to-one correspondence with the radio frequency terminals, two radio frequency conduction members, two load conduction members, two driving assemblies, a reset mechanism and a control mechanism, wherein the reset mechanism enables the radio frequency conduction members and the load conduction members to recover a non-conduction state when no external force is applied; the control mechanism is electrically connected with the driving assemblies; the control state of the control mechanism includes that the two driving assemblies are not powered on or one driving assembly is powered on. Compared with the prior art, the technical scheme provided by the utility model has the following advantages: only the working states of two equipment signals need to be controlled, so that the power consumption is low and the control is simple under the same condition; signals of the two devices are initially located at the load terminal, for specific scene application, the problem that when the devices are in a no-load mismatch state, a conventional switch can only guarantee that a single-path load terminal cannot achieve the state is better solved, and application of a user can be better met.

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 relates to a phase shifter and a base station antenna. The phase shifter comprises a circuit board (10) and a cavity (20), the circuit board (10) is located in the cavity (20), and the circuit board (10) is provided with a grounding connection end (11) and signal connection ends (12) of a plurality of phase shift circuits; the conductive part (70) is arranged in the cavity wall of the cavity (20) in a penetrating manner, and a part of structure of the conductive part (70) is electrically connected with the grounding connection end (11) of the circuit board (10); wherein the cavity (20) is provided with a cavity avoiding hole (22), and the cavity avoiding hole (22) is arranged opposite to the signal connecting end (12) and the grounding connecting end (11), so that the signal connecting end (12) and the grounding connecting end (11) are exposed from the cavity avoiding hole (22). According to the phase shifter and the base station antenna, electroplating-free effect can be realized, the occupied space is small, and the layout of the whole machine can be simplified.

The embodiment of the invention provides a tunable cavity filtering coupler, an antenna device and communication equipment, and relates to the technical field of mobile communication. The tunable cavity filtering coupler comprises a dielectric substrate, a base layer and a metal layer arranged on the surface of at least one side of the base layer, the metal layer is provided with an annular coupler and a bias circuit, the annular coupler comprises four center loading branch resonators which are sequentially distributed in the circumferential direction, and the four center loading branch resonators are connected with the bias circuit. Each center loading branch resonator is connected with a variable capacitance diode. The metal layer further comprises feed ports which are in one-to-one correspondence with the center loading branch resonators and are connected with the center loading branch resonators. The biasing circuit is arranged on the periphery of the annular coupler in a surrounding mode, and the biasing circuit is electrically connected with the variable capacitance diode. According to the tunable cavity filtering coupler, the antenna device and the communication equipment provided by the invention, frequency selectivity and passband tunable functions are realized, and multi-band operation requirements are met.

The embodiment of the invention provides a phase shifter, an antenna and a communication base station, relates to the technical field of communication, and aims to solve the problems of large transmission loss and large size of the phase shifter. The phase shifter comprises a bearing plate, a metal shell, a fixed medium, a sliding medium and a metal feed sheet. Wherein the bearing plate comprises a first metal layer arranged on one side; the metal shell is fixedly attached to the surface of the first metal layer and electrically connected with the first metal layer. The fixed medium is fixedly installed in the metal shell, and the metal shell and the fixed medium define a sliding cavity. The relative dielectric constant of the fixed medium is greater than 1. The sliding medium is arranged in the sliding cavity, and the sliding medium located in the sliding cavity can slide relative to the fixed medium; the sliding medium is provided with a sliding groove with an opening facing the fixed medium. The metal feed sheet is installed on the fixed medium and comprises a phase shift circuit extending into the chute. The phase shifter can be applied to an antenna and a communication base station.

The invention discloses a frequency modulation matching microwave plasma generator, which is characterized in that a circulator is connected between a microwave source and a plasma resonant cavity, microwaves are input from a port 1 of the circulator, and are output to the plasma resonant cavity from a port 2, so that the reflected microwaves are output from a port 3. Meanwhile, a matched load and a power meter are connected to a port 3 of the circulator, microwaves output by the port 3 of the circulator are absorbed by the matched load, most returned microwaves are absorbed by the matched load, a small part of the microwaves are reflected back to the port 3, the microwaves input by the port 3 are output at a port 1, the microwave power borne by the microwave source is reduced, and the stability and the service life of the microwave source are improved. The control system adjusts the output frequency of the microwave source according to the measured power, so that the output frequency of the microwave source is improved, and the output impedance of the microwave source is matched with the working impedance of the plasma resonant cavity again, so that the back-and-forth reflection loss of microwaves is avoided; and the impedance matching adjustment speed is greatly improved.

The invention provides a 6G reconfigurable multi-passband modulation filter device of SSPP, and the top design structure comprises a first CPW structure, a first conversion structure, an active SSPP waveguide unit structure, a second conversion structure, and a second CPW structure which are disposed along the propagation direction of electromagnetic waves. Wherein the first conversion structure and the second conversion structure are sawtooth transition zone structures provided with a plurality of sawteeth at intervals, the depths of the sawteeth in the sawtooth transition zone structures are gradually increased towards the direction of the active SSPP waveguide unit structure, and the active SSPP waveguide unit structure comprises a plurality of active SSPP units connected in series. Each active SSPP unit comprises an H-shaped waveguide and two resonance units which are respectively arranged in the vertical direction of the H-shaped waveguide, each resonance unit is obtained by connecting two split rings through a variable capacitance diode, and regulation and control of double passbands and three passbands can be realized by changing the capacitance value of the variable capacitance diode; and a 2FSK signal modulation function can be realized in a coding state by introducing digital coding.

The invention discloses a filter and electronic equipment. The filter comprises a substrate and a quasi-surface plasmon polariton (SSPP) array. The SSPP array comprises m SSPP units, and the m SSPP units are the same in size. Each SSPP unit in the m SSPP units comprises a first metal strip and a second metal strip which are symmetrically arranged and do not make contact with each other, the first metal strip is located on the upper surface of the substrate, and the second metal strip is located on the lower surface of the substrate. The first metal strip comprises a rectangular structure and an anchor-shaped structure, one end of the rectangular structure is coupled with the edge of the substrate, the other end of the rectangular structure is coupled with the anchor-shaped structure, the width of the anchor-shaped structure is larger than that of the rectangular structure, and the size of the first metal strip is related to tuning parameters of the filter. Therefore, the tuning parameter of the filter can be determined by directly adjusting the size of the first metal strip, and the design flexibility of the filter is improved.

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 present disclosure provides a phase shifter with an adjustable output mode, capable of switching the output mode of a conventional antenna in a vertical plane, includes a fixed dielectric plate provided with a fixed circuit; a moving sliding plate, the moving sliding plate is provided on the side of the fixed dielectric plate, a plurality of sliding circuits are provided on the moving sliding plate corresponding to each of the fixed circuits, the fixed circuits are capable of being coupled with at least one of the corresponding sliding circuits to form a phase-shifting circuit together, and the moving sliding plate slides with respect to the fixed dielectric plate, is capable of switching the sliding circuits coupled with the fixed circuits, and is capable of adjusting the phase of the output signal of the phase-shifting circuit; the present disclosure further provides an antenna using the phase shifter.

The invention discloses a feed network component, a phase shifter and an antenna device, which are used for solving the problem that the transmission efficiency is influenced by resonance formed in opposite areas of metal plates. The invention provides a feed network assembly, a feed network comprises a cavity and a transmission structure, the cavity comprises an accommodating cavity, and the accommodating cavity is used for accommodating the transmission structure; the cavity further comprises a first side wall, the first side wall comprises a first sub-side wall and a second sub-side wall which are oppositely arranged and capacitively coupled, and at least one of the first sub-side wall and the second sub-side wall which are oppositely arranged and capacitively coupled comprises at least one slot. According to the invention, the open grooves are formed in the first sub-side wall and the second sub-side wall which are oppositely arranged and are in capacitive coupling, so that the oppositely arranged areas are reduced, the resonance is reduced, and the transmission efficiency is improved.

The present disclosure provides an antenna and electronic device, and belongs to the field of communication technology. The antenna includes a feed layer, a phase adjustment layer, and a radiation layer, wherein the feed layer is configured to transmit a microwave signal to the phase adjustment layer; the phase adjustment layer is configured to phase-shift the microwave signal by a preset phase shift amount; and the radiation layer is configured to radiate the microwave signal phase-shifted by the phase adjustment layer; the radiation layer includes at least one first radiation patch.

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.

The utility model provides a phase shifter based on a waveguide transmission line, comprising a waveguide transmission line, a dielectric substrate and a metal structure, and a waveguide cavity is arranged in the waveguide transmission line; the dielectric substrate is arranged in the waveguide cavity, and the dielectric substrate is perpendicular to the signal transmission direction of the waveguide transmission line; the metal structure is attached to the dielectric substrate to form an LC resonance circuit, and an electric adjusting element is arranged on the metal structure and used for adjusting the electric conduction shape of the metal structure so as to control the electromagnetic wave phase in the waveguide transmission line. According to the phase shifter of the scheme, the dielectric substrate is arranged in the waveguide transmission line, extra space is not needed, and the conductive metal shape of the metal structure is controlled by controlling the electrically tunable element, so that the phase change of electromagnetic waves after passing through the waveguide transmission line is controlled. According to the scheme, the dielectric substrate does not need to occupy extra space, the metal structure and the electric adjusting element are small in size, phase adjustment of electromagnetic waves can be achieved in an electric adjusting mode, and the method can be applied to scenes such as a high-power radar phased array.

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.

Provided is a phase shifter comprising: a switching unit which switches a transmission path of a signal (hereinafter, referred to as an "input signal") input through an input terminal so that the input signal is selectively transmitted to an output terminal through different paths; and a transformer which outputs the signal switched through the switching unit through the output terminal by coupling the switching unit and the output terminal.

A nonreciprocal microwave transmission device includes a substrate, a transducer on a surface of the substrate and configured to reciprocally convert between electrical signals to acoustic waves, a first piezoelectric material configured to generates and transports acoustic waves from a signal applied to the transducer, and a thin film magnetic material configured to couple to acoustic waves through magnetoelastic coupling so as to have non-reciprocal magnetoelastic coupled acoustic wave transport. Transmission of acoustic waves through the thin film magnetic material is in a direction toward the transducer has a first magnitude and transmission of acoustic waves through the thin film magnetic material in a direction away from the transducer has a second magnitude, the first and second magnitude being significantly different.

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.