173 results about "Dielectric resonator" patented technology

The present application relates to the technical field of communications, and discloses a base station antenna unit, a base station antenna array, and a base station. The base station antenna unit comprises a dielectric plate, a metal ground plate, a first dielectric resonator, a second dielectric resonator, a dielectric coupling path, and a feeding structure; the metal ground plate and the feeding structure are arranged on two sides of the dielectric plate, respectively, and a cross-shaped slot is formed on the metal ground plate; the first dielectric resonator and the second dielectric resonator are of a symmetrical structure, and the first dielectric resonator and the second dielectric resonator are arranged on the dielectric plate; the dielectric coupling path is arranged on the dielectric plate, located between the first dielectric resonator and the second dielectric resonator, coupled to the first dielectric resonator and the second dielectric resonator, and located above the cross-shaped slot; and the feeding structure has two feeding ports, feeding input by means of different feeding ports excites the cross-shaped slot to generate an orthogonal electric field, and electromagnetic waves of the orthogonal electric field reach the first dielectric resonator and the second dielectric resonator by means of the dielectric coupling path.

A short-circuit rectangular metal patch and a dielectric slot act on a cavity-backed substrate integrated dielectric resonator, and by utilizing a newly-added mode of the short-circuit rectangular metal patch and a matching effect of the short-circuit rectangular metal patch and the dielectric slot on a slot mode and an adjusting effect of the short-circuit rectangular metal patch and the dielectric slot on amplitude distribution of an electric field of four modes, the broadband stable beam broadening dielectric resonator filtering antenna is obtained. By combining a low-frequency out-of-band radiation zero point generated by the whole resonator and a high-frequency out-of-band wave limiting effect of the U-shaped groove, the broadband wide-beam dielectric resonator antenna is realized, and the broadband wide-beam dielectric resonator antenna has the advantages of broadband stable beam broadening and integration of a filtering function, and can simultaneously take substrate integration and low profile into account.

Embodiments disclosed herein include dielectric resonators for microwave plasma application. In an embodiment, such an apparatus comprises a dielectric puck, where the dielectric puck has a cylindrical shape. In an embodiment, the dielectric puck comprises a first region with a first dielectric constant, and a second region with a second dielectric constant that is different than the first dielectric constant. In an embodiment, the dielectric puck further comprises a hole into a top surface of the dielectric puck.

The application discloses a compact dielectric resonator antenna module, which comprises a substrate assembly and a dielectric resonator arranged on the substrate assembly. The dielectric resonator comprises a connecting part and four isosceles trapezoidal columns. The height of the connecting part is less than the height of the isosceles trapezoidal columns. The four isosceles trapezoidal columns are evenly distributed around the connecting part. The short bottom surface of the isosceles trapezoidal column is connected with the connecting part. The long bottom surface of the isosceles trapezoidal column has a compensation part extending away from the connecting part. The connecting part, the isosceles trapezoidal column and the compensation part are integrally formed into an integrated structure. The dielectric resonator antenna module has a compact structure and a small overall volume. The dielectric resonator only needs to be installed once as a whole, thereby reducing the alignment error generated in the installation process and facilitating the guarantee of the antenna performance. The height difference between the connecting part and the isosceles trapezoidal column in the height direction achieves a decoupling effect to some extent, thereby reducing the coupling between the isosceles trapezoidal columns. The dielectric resonator antenna module can cover the N258 frequency band in 5G.

A radio frequency coil device and array for ultrahigh field magnetic resonance imaging comprises a coaxial dipole antenna and a dielectric resonator antenna which work in a collaborative excitation mode, and the coaxial dipole antenna is in a circular ring shape or a rectangular ring shape and is provided with a first radio frequency port; the dielectric resonator antenna comprises a dielectric resonator and a coupling coil, the dielectric resonator, the coupling coil and the coaxial dipole antenna are sequentially distributed in parallel at intervals along the Y axis, the coupling coil is provided with a second radio frequency port, and the dielectric resonator forms a resonant cavity and realizes energy coupling with the coaxial dipole antenna through the coupling coil; excitation signals are respectively applied to the first radio frequency port and the second radio frequency port, so that the coaxial dipole antenna and the dielectric resonator antenna respectively generate orthogonal electromagnetic field distribution, and low-channel coupling is realized. Through the collaborative excitation mode and the orthogonal electromagnetic field distribution design, coupling between channels is effectively reduced, the B1 + field uniformity is improved, meanwhile, the peak SAR is reduced, and the imaging efficiency and safety are improved.

The invention provides a metal patch loaded miniaturized dielectric resonator antenna for a base station, and relates to the technical field of wireless communication, a specific parasitic metal patch is introduced at the bottom of a dielectric resonator, the limitation that the traditional design only depends on geometric dimension to adjust the frequency is broken through, the TM12 high-order mode frequency is obviously pulled down to be close to a fundamental mode TM10 and fusion is realized, and the antenna has the advantages of being simple in structure and convenient to use. On the premise that the size of the antenna is not increased, the working bandwidth is expanded to 3.4-4.0 GHz. Through the structural design, a cross-shaped groove structure is loaded in the central area of the dielectric resonator, a current path of a TM20 parasitic mode is cut off accurately, directional diagram distortion and cross polarization interference caused by the mode are effectively suppressed, and it is ensured that the antenna has stable radiation performance. Therefore, the antenna has excellent broadband and radiation characteristics, can still keep compact physical size, low profile structure and simple processing technology, and meets the urgent demand of a microwave frequency band wireless communication terminal on high performance and miniaturization antennas.

This invention provides a silicon-based dielectric resonant antenna with adjustable beamwidth, comprising a beamwidth adjustment structure, an antenna substrate and a dielectric resonator, an excitation antenna, and solder bumps. The multilayer antenna substrate and dielectric resonator are arranged sequentially from top to bottom, with an air cavity formed in the middle. The excitation antenna is located at the bottom of the air cavity. The beamwidth adjustment structure is located on top of the top layer of the antenna substrate and dielectric resonator. A through-silicon via (TSV) is located in the middle of the bottom layer of the antenna substrate and dielectric resonator, with solder bumps located at the bottom of the TSV. This invention significantly reduces the antenna size and improves its radiation efficiency by using high-resistivity silicon as the antenna dielectric. By introducing an air cavity structure and adjusting the beamwidth through the top-layer beamwidth adjustment structure, the antenna application frequency can be changed according to usage, the feeding method can be modified and optimized according to application conditions, and it can be stacked with chips to achieve three-dimensional heterogeneous high-density integration.

The invention provides a three-mode dielectric resonator which comprises a dielectric block, the dielectric block is provided with a pair of first resonant blind holes, a pair of second resonant blind holes and a third resonant blind hole, the first resonant blind holes are arranged along a first diagonal direction of the dielectric block and used for forming a first resonant mode, and the second resonant blind holes are arranged along a second diagonal direction of the dielectric block and used for forming a third resonant mode. The pair of second resonance blind holes are arranged along a second diagonal direction of the dielectric block and are used for forming a second resonance mode, the third resonance blind holes are used for forming a third resonance mode, and the first diagonal direction and the second diagonal direction intersect with each other. The invention also provides a dielectric waveguide filter and a dielectric waveguide duplexer using the resonator unit. When the resonator unit is used for designing a dielectric waveguide filter, a three-mode waveguide structure with independently adjustable resonant modes is realized, multiple resonant modes are realized under the same volume, the overall Q value benefit is achieved, and the resonator unit has the advantages of miniaturization and high Q value benefit.

The present application is applicable to the field of communication technology, and provides a filter and a communication device, wherein the communication device includes a filter, and the filter includes a cavity, a cover plate, a dielectric resonator and a fastener. The cover plate covers the cavity and is provided with a first hole therethrough. The dielectric resonator is provided in the cavity and is supported by the cover plate. A second hole opposite to the first hole is provided at one end of the dielectric resonator facing the cover plate. The fastener is passed through the first hole and locked in the second hole to relatively fix the dielectric resonator and the cover plate along the through-direction of the first hole. By passing the fastener through the first hole of the cover plate and locking it in the second hole of the dielectric resonator, the dielectric resonator and the cover plate can be relatively fixed along the through-direction of the first hole. In this way, the cover plate and the dielectric resonator can be stably, tightly and reliably fitted along the through-direction of the first hole under the action of the fastener, which can effectively reduce the insertion loss and intermodulation of the filter and improve the performance indicators of the filter.

An electronic device may be provided with an antenna module having a substrate. A phased antenna array of dielectric resonator antennas and a radio-frequency integrated circuit for the array may be mounted to one or more surfaces of the substrate. The dielectric resonator antennas may include dielectric columns excited by feed probes. The feed probes may be printed onto sidewalls of the dielectric columns or may be pressed against the sidewalls by biasing structures. A plastic substrate may be molded over each dielectric column and each of the feed probes in the array. The feed probes may cover multiple polarizations. The array may include elements for covering multiple frequency bands. The dielectric columns may be aligned a longitudinal axis and may be rotated at a non-zero and non-perpendicular angle with respect to the longitudinal axis.

A device for measuring a property of a substrate comprises an enclosure, two resonators, and two probes. The substrate has a top surface, and the enclosure defines a cavity for placing the substrate. The resonators extend into the cavity of the enclosure. The probes extend into the cavity, and each of the probes comprises a loop that extends about an axis that is substantially parallel to the top surface of the substrate so that the probes are operable to excite a transverse magnetic mode signal in the cavity.

A resonator apparatus, a filter apparatus as well as a radio frequency and microwave device are disclosed. According to an embodiment, the resonator apparatus comprises an electrically conductive case and a dual-mode dielectric resonator provided in the electrically conductive case. The dual-mode dielectric resonator comprises a first dielectric block having a shape of a columnar body whose cross section is a cruciform. A mode coupling structure for coupling two resonant modes of the dual-mode dielectric resonator is provided in the columnar body. A bottom face of the columnar body is supported by an inner face of the electrically conductive case or by a supporting member provided on the inner face of the electrically conductive case. In at least one extending direction of a first extending direction and a second extending direction of the cruciform which are perpendicular to each other, lateral end faces of the columnar body are spaced apart from inner faces of the electrically conductive case.

The application discloses a dielectric resonator, comprising: a cavity; a cover plate, comprising a first cover plate and a second cover plate, the second cover plate being crimped on the first cover plate; a tuning screw being installed on the cover plate; a metal resonant rod being fixed on the bottom of the cavity; a dielectric resonant rod having an upper end surface and a lower end surface, the upper end surface being in contact with the first cover plate, and the lower end surface being in contact with the metal resonant rod; the first cover plate having a first opening, a first slot portion and a second slot portion, the first slot portion being located radially outside the first opening and axially above the dielectric resonant rod, an elastic member being arranged in the first slot portion, and the second slot portion being located radially outside the first slot portion. The dielectric resonator adopts a double-layer thick cover plate, and through designing an inner and outer double-cut slot structure on the first cover plate, the upper and lower end surfaces of the dielectric resonant rod are kept in good contact in a simple and controllable structure.

The application belongs to the technical field of antennas and relates to a dielectric resonator antenna, which comprises a bottom plate and a dielectric block arranged on the bottom plate; the dielectric block comprises a first part in the shape of a regular quadrangular pyramid, and the lower bottom surface of the first part is arranged at the center of the bottom plate to form a dielectric resonator; the dielectric block further comprises a second part in the shape of a regular quadrangular pyramid; the upper bottom surface of the second part coincides with the upper bottom surface of the first part; the lower bottom surface of the second part has a longer side length than the lower bottom surface of the first part, and the height of the second part is smaller than the height of the first part; a resonant groove recessed towards the first part is arranged on the lower bottom surface of the second part, and the resonant groove is in the shape of a regular cube. The application can be applied to the S wave band, and simultaneously realizes ultra-wideband and light weight.

A substrate-integrated dielectric resonator, which includes a first substrate layer having a first dielectric constant, and a plurality of metallic patches on a first side of the first substrate layer. The plurality of metallic patches is separated from each other, and is shorted to ground. A dielectric resonator antenna incorporating such a resonator is also described. The DRA has a low profile with an enhanced gain. The DRA can be easily fabricated using low-cost PCB technology. By adding shorted metallic patches to the DR without increasing the antenna size, the gain of DRA is obviously increased.

The invention relates to a dual-mode resonator, a dual-mode filter and communication equipment. The dual-mode resonator comprises a first resonator, a second resonator and a first tuning part, the first resonator is a dielectric resonator, the first resonator is provided with a first tuning hole, and the first tuning hole extends from the top face of the first resonator to the bottom in the axial direction. The second resonator is a metal resonator, the second resonator is connected to the top surface of the first resonator in an overlapping manner, the second resonator is provided with an avoiding hole, and the avoiding hole is aligned with the first tuning hole in the axial direction of the second resonator and is communicated with the first tuning hole. The first tuning piece extends into the first tuning hole from the avoiding hole and can adjust the position in the axial direction. When the first tuning part performs tuning operation, the dual-mode resonator does not need to be turned over, so that debugging is more convenient. Moreover, the first tuning part is located at the top of the dual-mode resonator, so that compared with the mode that the first tuning part is arranged at the bottom of the dual-mode resonator, the structure is simplified, and assembly is facilitated.

This invention discloses a high-quality factor electromagnetically induced transparent resonator device based on a dielectric-metal bilayer metamaterial. The device includes a substrate, dielectric resonator units arranged in a two-dimensional periodic pattern on the upper surface of the substrate, and metal resonator units arranged in a two-dimensional periodic pattern on the lower surface of the substrate. The dielectric and metal resonator units have the same two-dimensional distribution period and arrangement direction. The metal resonator unit is located directly below the dielectric resonator units. The substrate is made of a dielectric material. Each dielectric resonator unit consists of two rectangular dielectric ring pillars with their long sides parallel to each other. The metal resonator unit consists of a rectangular metal strip parallel to the long sides of the two rectangular dielectric ring pillars. This device provides a dielectric-metal bilayer metamaterial-based electromagnetically induced transparent resonator, improving the quality factor of electromagnetically induced transparency and overcoming the shortcomings of existing technologies, such as low quality factors and complex adjustment mechanisms.

A broadband silicon-based SU-8 dielectric resonant antenna array and its fabrication method are disclosed, comprising: a feeding substrate, an SU-8 layer disposed thereon, and a dielectric resonator located in the SU-8 layer, wherein: the dielectric resonator includes a dielectric body and a first metal layer; the feeding substrate includes: a second metal layer, a dielectric layer, and a third metal layer. This invention uses high-resistivity silicon as the main dielectric resonator and employs a coupled feeding method to fabricate a template with cavities on the feeding substrate using SU-8 photoresist, achieving high-precision manufacturing and array assembly of the dielectric resonant antenna, as well as rapid assembly and precise positioning; simultaneously, it has a wider operating bandwidth and advantages such as simple process steps, low cost, and rapid mass production.

The application provides a differential gap antenna, which comprises a dielectric substrate, a metal plate attached to the dielectric substrate, and a dielectric resonator installed on the metal plate, wherein the metal plate is provided with a feed structure and a plurality of ground holes, the feed structure comprises a first feed slot, a second feed slot and a differential structure, the differential structure is arranged at the connection of the first feed slot and the second feed slot, the plurality of ground holes are respectively arranged around the differential structure, the first feed slot and the second feed slot are of the same structure, and the dielectric resonator is pressed on the feed structure, compared with a conventional feed structure, the bandwidth is improved and the adaptability in different scenes is improved.

The application discloses an antenna with digital regulation of radiation characteristics, uses a medium resonator loaded with an electromagnetic super surface as a radiator, introduces a double-slot feed structure and a half-wavelength phase delay microstrip line to complete polarization and phase reconfiguration, and further realizes digital discretization of polarization and phase. The application can flexibly control the radiation state of electromagnetic waves by selecting different coding sequences. Meanwhile, the radiation characteristic digital regulation array antenna formed based on the antenna structure arrangement of the application has the advantages of small volume, low cost, wide bandwidth, multiple functions, multi-beam dynamic scanning and high design freedom, and can realize flexible beam and polarization conversion, and can also perform digital modulation on the radiation wave by controlling the coding sequence of each element, and is suitable for future beam-controllable intelligent communication or direct signal modulation communication application.

The application discloses a compact dual-polarized end-fire dielectric resonator antenna for a millimeter wave terminal, and particularly relates to the technical field of millimeter wave communication, and solves the technical problem that although in the millimeter wave frequency band, a dielectric resonator antenna has the advantages of small volume, high design freedom and low loss; however, the current millimeter wave end-fire dielectric resonator antenna is limited to single-polarized radiation; and the dielectric resonator antenna cannot be fully utilized while high integration is achieved; the technical scheme is that two orthogonal dielectric resonator modes of vertical polarization and horizontal polarization are adopted to work, and two polarizations share the same structure; the application can realize dual-polarized coverage, end-fire beam scanning in the millimeter wave frequency band, and has the excellent characteristics of low profile and small planar size.

A millimeter wave frequency band conductivity test cavity comprises a dielectric resonator, a supporting structure and a metal shielding cavity. The dielectric resonator is placed in the metal shielding cavity through a support, and the dielectric resonator adopts an anisotropic dielectric; through cooperation of the dielectric resonator, the supporting structure and the metal shielding cavity, the working mode of the cavity is TE01n, an electric field rotates in an X-Y plane, and the Z axis has no electric field component; and the Z-axis direction is the direction in which the supporting structure supports the dielectric resonator. When the test cavity is used for testing, the conductivity of the sample can be calculated. The conductivity test of the metal material has a good application prospect in the aerospace technology.

This invention discloses an apparatus and method for measuring the frequency characteristics of the effective conductivity of a dielectric-metal interface, belonging to the field of electronics technology. Specifically, it includes a test base, a calibration component, and a support column. By setting an absorbing ring and a stretchable metal ring inside the test base, the loss in the non-operating mode is increased, the boundary conditions of the non-operating mode are changed, thereby disrupting the excitation conditions of the non-operating mode and improving the purity of the operating mode. By adjusting the height of the stretchable metal ring inside the dielectric resonator, a single device can accurately measure the effective conductivity of a single sample dielectric-metal interface at multiple discrete frequency points. It can be used for the effective evaluation of information such as the roughness of the copper cladding layer at the dielectric-metal interface.

The object of the present invention is to provide a preparation process of SrTiO3-LaAlO3-based microwave dielectric ceramics and their resonators, with the chemical formula Sr(y-z)CazTi1-mCemO3-xLa1-nGanAlO3, where 0.7 ≤ x ≤ 1.15, 0.98 ≤ y ≤ 1.01, 0.05 ≤ z ≤ 0.15; 0.001 ≤ m ≤ 0.01; 0.001 ≤ n ≤ 0.015; the sintering conditions of the resonator are: in air, the sintering temperature is 1500 °C to 1600 °C; the resonance frequency is 2.4 to 2.6 GHz, the Q value is 17700 to 19800, and the temperature coefficient of resonance frequency is 0 ± 5 ppm / °C. The sintering conditions of this resonator are relatively simple, the sintering atmosphere is air, the performance has been greatly improved, the performance is stable, and it can meet the application requirements of modern communication technologies, and can be widely used in the preparation of microwave components such as microwave dielectric resonators.

The utility model discloses a ceramic dielectric resonator structure, comprising a resonance body and a support pad, the bottom of the resonance body is provided with a groove convenient for embedding the support pad, the top of the support pad is embedded in the groove, and the joint of the resonance body and the support pad is provided with an adhesive. After the glue is brushed, the situation that the thickness of the glue on the contact surface is not uniform is avoided, the glue is distributed more uniformly through the embedded structure of the supporting pad and the resonance body, and the contact area is larger; rigid support is arranged between the supporting pad and the resonant body, so that the supporting pad and the resonant body are connected more stably; control of a heating temperature curve does not need to be considered in the machining process; the problem of pressure control does not need to be excessively considered when heating and curing are carried out in a clamp; in addition, friction force between the supporting pad and the resonance body is increased due to the protrusions, displacement or looseness in the long-time using process is prevented, it can be guaranteed that the resonance body can keep the stable installation position and the stable working state, and the overall reliability is improved.

The embodiment of the present application relates to the technical field of antenna, and discloses a dual-frequency dielectric resonant antenna, which comprises a substrate, a feeding unit and an antenna unit; the substrate is provided with a plurality of feeding slots; the feeding unit is arranged on the substrate and is coupled with the feeding slots; the antenna unit comprises a plurality of dielectric resonators, the plurality of dielectric resonators are arranged on the substrate, and the plurality of dielectric resonators are sequentially connected in the same direction to form an integrated antenna unit, and one dielectric resonator is connected with one feeding slot.The embodiment of the present application sequentially connects the plurality of dielectric resonators in the same direction to form an integrated antenna unit, so that the integrated plurality of dielectric resonators only need to be bonded and fixed once, the installation of the antenna unit can be completed, the installation process is simplified, the installation alignment error caused by multiple installations of the antenna unit is reduced, and the performance simulation error and actual error of the antenna unit are avoided from being increased.

The present invention belongs to the field of microwave communication technology, and specifically relates to a dual-polarization differential dielectric resonator antenna with filtering function. The present invention is composed of an orthogonal combination of two linearly polarized antennas with the same structure. A microstrip differential feeder is designed at the bottom of a dielectric substrate and is connected to a dipole structure designed on the virtual ground of the dielectric resonator through metal through-holes and pads. The radiating structure consists of three parts: a dipole, a dielectric resonator, and a dielectric patch resonator placed on top of the dielectric resonator. The resonant modes of these three radiators correspond to the following within the antenna operating frequency band: the 1 / 2 wavelength resonance of the dipole, the #imgabs0# mode of the dielectric resonator, and the #imgabs1# mode of the dielectric patch resonator. At the low-frequency radiation zero point, the dipole circuit structure on the virtual ground introduces a radiation zero point; at the high-frequency radiation zero point, the electric field generated by the dipole structure offsets the #imgabs2# mode of the dielectric patch resonator, introducing a radiation zero point, thereby realizing the function of a simple filtering antenna.

This invention relates to a dual-channel third-order dielectric filter, comprising an orthogonal right-angled metal cavity containing orthogonally arranged first, second, and third dual-mode dielectric resonators. The first dual-mode dielectric resonator is located at the orthogonal intersection point and cascaded with the coupling windows of the second and third dual-mode dielectric resonators. The filter has input and output port groups at the bottom of the metal cavity, with the input port group cooperating with the output port group via the three resonators. By setting the three orthogonally arranged and cascaded resonators, the two filter channels share the first dual-mode dielectric resonator, reducing the number of resonators and lowering the overall size and weight while ensuring filtering performance. Simultaneously, first and second dielectric strips of equal height are provided at the cross-angle of the second and third dual-mode dielectric resonators to suppress higher-order spurious modes, improve channel isolation, overcome the difficulty in controlling electromagnetic coupling in discrete solutions, and simplify the assembly process through integrated design.

The invention provides a dielectric resonator and a broad-spectrum high-selectivity microwave and millimeter wave band-pass filter chip, the dielectric resonator comprises a dielectric substrate, an inductive part and a capacitive part, the inductive part comprises a first conductive strip, a first metalized through hole and a second metalized through hole, the capacitive portion includes a second conductive strip and a bottom conductive substrate. The broad-spectrum high-selectivity microwave and millimeter wave band-pass filter chip comprises the dielectric resonator, an input coupling module and an output coupling module. The dielectric resonator and the broad-spectrum high-selectivity microwave and millimeter wave band-pass filter chip are well balanced in performance, bandwidth, size and frequency adaptability.

The application provides a dielectric resonator, comprising: a dielectric resonant cavity, the dielectric resonant cavity comprising a solid dielectric body and a metal plating layer wrapping an outer surface of the dielectric body; a capacitively loaded structure embedded in the dielectric body, and an end surface of the capacitively loaded structure being in contact with the metal plating layer of a surface of the dielectric resonant cavity, the capacitively loaded structure having a cross section with an area greater than that of the end surface; and a quality factor of the dielectric resonator being related to a volume-surface ratio of the capacitively loaded structure.