23 results about "Dielectric resonator" patented technology

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.

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.

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.

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.

This application relates to the field of communications, providing a multimode resonator and filter. The multimode resonator has at least two resonance modes: HE mode and HE mode. The multimode resonator includes a resonator housing, a dielectric resonator, and a coupling structure. The dielectric resonator is disposed within the resonator housing and connected to a first wall of the housing. The two electric field polarization directions of the HE mode are along a first radial direction and a second radial direction, respectively, and the first and second radial directions intersect perpendicularly at the central axis of the dielectric resonator. The coupling structure is disposed at one end of the dielectric resonator and intersects perpendicularly at the central axis of the dielectric resonator. The coupling structure is set at an angle to both the first and second radial directions to achieve HE dual-mode coupling. The multimode resonator can achieve HE dual-mode coupling through a simplified and optimized coupling structure, resulting in better coupling performance. This optimizes the structural design, coupling design, and overall performance of the multimode resonator, and facilitates the simulation design of the multimode resonator.

The present invention belongs to the field of electronic information functional materials and microelectronic devices, and specifically provides a Li 2.12 MgTi3O8-based microwave dielectric ceramic material and a preparation method thereof, aiming to solve the problem that the Li 2.12 MgTi3O8 microwave dielectric ceramic cannot be applied to LTCC due to its high sintering temperature. The present invention first proposes to add LiF with a low sintering temperature as a sintering aid to the Li 2.12 MgTi3O8-based microwave dielectric ceramic material, and scientifically defines its addition amount as x wt%, 0.75 < x ≤ 1.50, so as to reduce the sintering temperature of the Li 2.12 MgTi3O8 microwave dielectric ceramic below the melting point of the silver electrode, and achieve sintering at 850°C to 950°C, thus meeting the application requirements of LTCC; at the same time, the quality factor Q×f is increased to 81000 GHz to 98000 GHz, and the relative dielectric constant ε r is 22.5 to 26.5, and the resonant frequency temperature coefficient τ f is 3.0 to 6.5 ppm / °C. It can be used as a substrate material for electronic devices such as antennas, dielectric resonators, filters, and microstrip lines, and has important application prospects in the fields of microwave communication, radar systems, satellite communication, etc.

A dielectric filter is provided including at least two connected dielectric resonators and a hole group formed between two adjacent dielectric resonators. Each dielectric resonator includes a dielectric body and a resonant cavity. The dielectric body includes a top surface and a bottom surface along a first direction Z of the dielectric filter. The resonant cavity runs through the top surface or the bottom surface. The dielectric body further includes a first side surface and a second side surface along a second direction Y. Each hole group includes a first hole and a second hole. Two ends of the first hole respectively run through the top surface and the bottom surface. The second hole runs through at least one of the first side surface and the second side surface. Projections of the first hole and the second hole intersect along a third direction X of the dielectric filter.

The application belongs to the field of wireless communication, and particularly relates to a pattern reconfigurable medium resonant antenna based on reflection grooves, which comprises a medium resonator, a medium substrate, a metal ground, a feeding structure, a cross-shaped groove, two pairs of reflection grooves and a bias network; wherein the medium resonator, the metal ground, the medium substrate and the feeding structure are sequentially arranged from top to bottom, the metal ground is printed on the upper surface of the medium substrate, the feeding structure is printed on the lower surface of the medium substrate, and stable feeding is realized through a gap coupling mode; the cross-shaped groove and the two pairs of reflection grooves are both arranged on the metal ground, the cross-shaped groove is accurately arranged corresponding to the central region of the medium resonator, and the two pairs of reflection grooves are symmetrically arranged at the edge regions of the medium resonator.

The embodiment of the application relates to the technical field of communication equipment, in particular to a dielectric resonant antenna and terminal equipment. The dielectric resonant antenna comprises a feeding part and a dielectric resonant part, and the dielectric resonant part and the feeding part are integrated parts; when the dielectric resonant part and the feeding part are connected, the plurality of dielectric resonators and the plurality of feeding units are one-to-one corresponding, so that the plurality of dielectric resonators and the plurality of feeding units can be connected through one installation action, installation precision can be ensured, and the occurrence of positioning inaccuracy caused by assembly times is reduced.

The embodiment of the present application relates to the technical field of communication, and discloses an antenna unit, the antenna unit includes a dielectric substrate, a ground plate, a dielectric resonator, a magnetic dipole assembly and a feed structure, the dielectric substrate includes oppositely arranged first surface and second surface;The ground plate is arranged on the first surface, and the ground plate is provided with a gap;The dielectric resonator is arranged on the ground plate, and the dielectric resonator is coupled with the gap;The magnetic dipole assembly is arranged on the ground plate, and the magnetic dipole assembly is coupled with the dielectric resonator;The feed structure is arranged on the second surface, and the feed structure includes a first feed part and a second feed part, the first feed part corresponds to the gap, and the second feed part is connected with the magnetic dipole assembly. In the above manner, the antenna unit of the embodiment of the present application can obtain a wider beam.

Embodiments described herein relate to an apparatus that includes a dielectric plate with a first surface and a second surface opposite from the first surface. In an embodiment, a dielectric resonators on the second surface of the dielectric plate. In an embodiment, a coating is on the first surface of the dielectric plate, where the coating includes yttrium and / or zirconium.

This invention relates to the field of antenna technology and discloses a polarization-reconfigurable antenna, including a substrate, a feed module, and an antenna module. The substrate has opposing first and second surfaces. The first surface has a feed slot and defines a first direction, a second direction, and a third direction. The feed module is disposed on the second surface and coupled to the feed slot. The antenna module includes a first radiating element and several second radiating elements with metal apertures. The first radiating element and the several second radiating elements are all disposed on the first surface and cover the feed slot. The first radiating element and the several second radiating elements respectively form linearly polarized, right-hand circularly polarized, and left-hand circularly polarized dielectric resonators in the first direction, the second direction, and the third direction. Through this method, this invention can control the polarization state of the antenna module by housing a metal pillar through a metal aperture, thereby eliminating the need for a complex feed module, simplifying the overall antenna structure, and reducing costs.

An electromagnetic, EM, device (1000) is disclosed, configured to operate at a defined center frequency f with a free-space wavelength X. The EM device (1000) comprises a plurality of dielectric resonator antennas, DRAs (3100), which can resonate at the same frequency f, forming a unit cell (3200) observed in a plan view of the EM device (1000) having a total footprint equal to or less than X / 2 in both x and y directions of an orthogonal x-y-z coordinate system, wherein the z direction is a vertical extension direction of each DRA (3100') of the plurality of DRAs (3100), the unit cell (3200) defining a DRA subarray (3000).

Embodiments include a modular microwave source. In an embodiment, the modular microwave source comprises a voltage control circuit, a voltage controlled oscillator, where an output voltage from the voltage control circuit drives oscillation in the voltage controlled oscillator. The modular microwave source may also include a solid state microwave amplification module coupled to the voltage controlled oscillator. In an embodiment, the solid state microwave amplification module amplifies an output from the voltage controlled oscillator. The modular microwave source may also include an applicator coupled to the solid state microwave amplification module, where the applicator is a dielectric resonator.

This invention provides a dielectric resonator antenna for millimeter waves and a terminal device. The dielectric resonator antenna for millimeter waves includes a dielectric substrate, a metal ground plane, multiple dielectric resonator elements, and multiple feed lines. The dielectric substrate has a first surface and a second surface. A feeding structure is disposed on the dielectric substrate. The metal ground plane is attached to the first surface and has multiple feeding slots. The feed lines are disposed on the second surface. The first end of the feed line is connected to the feeding structure, and the second end of the feed line is used to couple the dielectric resonator elements. The dielectric resonator elements are disposed on the metal ground plane, and the multiple dielectric resonator elements are arranged in a line. The corners of the dielectric resonator elements have chamfers, and the chamfered surfaces are perpendicular to the metal ground plane. This antenna improves the isolation between dielectric resonator elements, reduces the coupling between dielectric resonator elements, and ensures a wider active bandwidth and a good radiation pattern.

This invention discloses a quasi-planar dielectric resonator filter based on an electromagnetic bandgap shielding structure. It features equivalent artificial magnetic and electrical surfaces, resulting in an electromagnetic bandgap effect within the filter. This effect blocks the propagation of electromagnetic waves with wavelengths greater than one-quarter of the distance between the two surfaces. When the dielectric patch resonator is operating, only a small distance between the electrical and artificial magnetic surfaces is required to achieve broadband electromagnetic shielding. Therefore, the profile of the quasi-planar dielectric resonator filter can be made very low, making it easy to implement using multilayer printed circuit technology. Since the dielectric patch resonator is thin, it can be placed between upper and lower dielectric substrates, facilitating integration into multilayer planar circuits. Thus, the quasi-planar dielectric resonator filter offers advantages such as low profile and high integration density, resulting in low production costs. This invention has wide applications in the field of wireless communication technology.

The application discloses a straight connection type pseudo-elliptical dielectric resonator filter based on connecting bars, which comprises a shielded cavity, an integrated multi-stage dielectric resonator and a dielectric support column. Any pair of adjacent sub-cavities in the shielded cavity is communicated by an inductive coupling window. Any pair of adjacent single-mode dielectric resonators in the integrated multi-stage dielectric resonator is connected by a connecting bar. The single-mode dielectric resonator and the connecting bar correspond to the sub-cavity and the inductive coupling window respectively. The dielectric support column supports the integrated multi-stage dielectric resonator in the shielded cavity. The single-mode dielectric resonator is located in a corresponding sub-cavity. The connecting bar passes through a corresponding inductive coupling window. The application provides electric coupling through the connecting bar and magnetic coupling through the inductive coupling window to form mixed electromagnetic coupling, can generate more frequency-controllable transmission zero points, has good high-pass band selectivity, and has the advantages of easy manufacturing, assembly, cost reduction and the like by arranging the connecting bars. The application is widely applied in the field of wireless communication technology.

The application belongs to the technical field of dielectric resonator, and provides a connecting plug for dielectric resonator, which comprises a connecting part and a plug-in part, and the connecting part and the plug-in part are integrally formed, wherein the plug-in part is a fork structure comprising a first plug-in finger and a second plug-in finger; when the plug-in part is inserted into the dielectric resonator provided with an inner hole, the first plug-in finger is not electrically connected with the dielectric resonator, and the second plug-in finger is electrically connected with the dielectric resonator. The application provides a connecting plug for dielectric resonator suitable for variable temperature environment, which can avoid the virtual connection of the welding part caused by the micro deformation of the connecting plug affected by temperature, and further affect the stability of the electrical performance of the dielectric resonator.

A four-port omnidirectional antenna includes a dielectric resonator, a first substrate, and a second substrate. The first substrate includes two sets of feed lines for providing two transverse magnetic (TM) modes, one of which is a higher-order mode. The second substrate also includes two sets of feed lines for providing two transverse electric (TE) modes, one of which is a higher-order mode. The dielectric resonator, the first substrate, and the second substrate are stacked together to form a double-layer printed circuit board (PCB). The feed lines are configured to be mutually isolated, generating fields excited by the two TM modes and the two TE modes, thereby enabling independent operation among the four modes.

The application discloses a rhombic metamaterial-based circularly polarized resonator antenna, belongs to the technical field of microwave antennas, and solves the technical problem of how to design a rhombic metamaterial-based circularly polarized resonator antenna with simple structure and wide axial ratio characteristics; the antenna of the application generates circularly polarized radiation through the coupling between rhombic metamaterial resonator radiators of a rhombic metamaterial resonator radiator array, has more design freedom, is more convenient for the design of circularly polarized radiation, and has a wide axial ratio characteristic; meanwhile, the antenna structure is simple and convenient to process.

This invention relates to a microstrip slot-fed broadband metadielectric resonator antenna, belonging to the field of metamaterial antenna technology. It addresses the problem of designing a microstrip slot-fed broadband metadielectric resonator antenna with wide impedance bandwidth, flat gain curve, and simple structure. The antenna receives an RF signal from the excitation port, which is then conducted through a rectangular microstrip line to a rectangular slot. The rectangular slot then conducts the RF signal to a rectangular metadielectric resonator radiator array. Multimode resonance is generated by the coupling between the rectangular metadielectric resonator radiator elements, thereby increasing the impedance bandwidth. The signal radiates from the top of the rectangular metadielectric resonator radiator array. The antenna exhibits a flat gain curve, superior performance, and advantages such as simple structure and easy fabrication.

A four-port omnidirectional antenna comprising a dielectric resonator, a first substrate and a second substrate. The first substrate comprising two sets of feed lines adapted for providing two transverse magnetic (TM) modes, one of which is provided in a higher order. The second substrate also comprises two sets of feed lines adapted for providing two transverse electric (TE) modes, one of which is provided in higher order. The dielectric resonator, the first substrate and the second substrate are stacked with each other to form a double-layer printed circuit board (PCB), and the feed lines are configured to isolate fields excited by each of the two TM modes and the two TE modes, thereby enabling independent operation between each of the two TM modes and the two TE modes.

This application relates to the field of communications and provides a multimode resonator and filter. The multimode resonator includes a resonator housing, a dielectric resonator, and a first coupling structure. The first coupling structure is disposed on one end of the dielectric resonator and includes a first coupling portion and a second coupling portion. The first coupling portion extends along a first radial direction, and one end of the second coupling portion is connected to the end of the first coupling portion away from the central axis of the dielectric resonator. The second coupling portion extends circumferentially along the dielectric resonator. Two first coupling structures are provided, and the second coupling portions of the two first coupling structures are both disposed on the same side of the first coupling portion. Thus, the coupling between the HE mode and the TE mode along the first radial direction of the electric field polarization direction can be enhanced through the two first coupling structures, optimizing the coupling strength and coupling effect, and reducing or even eliminating the additional parasitic coupling generated when there is only one first coupling structure, thereby optimizing the performance indicators of the multimode resonator.