14 results about "Microstrip resonators" patented technology

The invention relates to the technical field of communication, in particular to a miniaturized wide-passband filter based on an EMSIW and a microstrip resonator. According to the miniaturized wide-passband filter, the two EMSIW cavities are adopted, the size of the filter can be effectively reduced, high-order modes TE120, TE210, TE220 and TE130 cannot be propagated in the EMSIW cavities, and therefore the filter has a wide stop band. Two microstrip resonators are embedded at a coupling window between two EMSIW cavities, and four-order quasi-elliptical filtering response is realized under the condition that no extra circuit area is occupied. Compared with other EMSIW filters, the filter has the advantages of being small in size, wide in passband, wide in stop band and good in selectivity, and has potential application value in a communication system.

The present invention relates to the field of wireless communication technologies, and provides a microstrip dual-path coupled resonator filter. The microstrip dual-path coupled resonator filter includes a metal layer, a silicon substrate stacked on the metal layer, and a filter structure stacked on the silicon substrate; the filter structure passes through the silicon substrate and is electrically connected to the metal layer; the filter structure includes two microstrip transmission lines stacked and fixed on the silicon substrate and oppositely arranged along a first direction, two open-circuit microstrip resonators, a short-circuit resonator, and a tightly coupled feeding structure; the two microstrip transmission lines and the two open-circuit microstrip resonators are arranged in an interleaved manner, and the open-circuit microstrip resonators and the short-circuit resonator are spaced from the two microstrip transmission lines respectively; each microstrip transmission line is configured with two tightly coupled feeding structures, and the other ends of the two tightly coupled feeding structures are respectively connected to the two open-circuit microstrip resonators. The microstrip dual-path coupled resonator filter of the present invention has high integration and reliability.

The application discloses a double-rotation-in-rotation-out structure microstrip resonator and microwave filter, and relates to the technical field of microwave communication. The opening end of the first rotation-in-rotation-out structure and the opening end of the second rotation-in-rotation-out structure are opposite and diagonally symmetrical. The first rotation-in-rotation-out structure and the second rotation-in-rotation-out structure are both double-line structures, which are wound in a character-shaped manner at a set initial position, and when wound to a preset terminal position, the inner line is elongated until a U-shaped structure surrounds the part wound in the character-shaped manner. The outer lines of the two double-line structures are connected through a first microstrip line. The double-line structure is composed of two parallel microstrip lines, and the two parallel microstrip lines are connected through a preset microstrip line at the corresponding set initial position. The application aims to solve the problem that it is difficult to achieve extremely weak coupling of the resonator at a small interval, and improve the stability of the coupling.

The invention belongs to the field of thin film microstrip filters, and particularly relates to a miniaturized ultra-wideband planar filter. According to the invention, the bridge employs a compact branch structure, the length and spacing of the branch are optimized according to the electromagnetic coupling characteristics of the 3.1-10.6 GHz frequency band, and the matching conditions of the characteristic impedance, the resonator and the dielectric substrate are strictly satisfied; the planar coupling path of the bridge is further combined with the three-dimensional coupling of the gold wire to form a'planar + three-dimensional 'composite coupling mechanism, and by matching with the miniaturized configuration of the microstrip resonator, the overall size of the device is reduced by more than 30%, the group delay is greatly reduced (from 0.68 ns traditionally to 0.33 ns at 8.3 GHz), the coupling value between the resonators is remarkably improved, and finally, the ultra-wideband coverage is realized. And in-band interference signals can be effectively suppressed. The problems that in the prior art, traditional bridge coupling only depends on a plane structure, the coupling path is single, coupling value improvement is limited, and bandwidth and miniaturization are difficult to consider at the same time are effectively solved.

The application provides a cross-coupled microstrip filter vibrator antenna and an array thereof, and belongs to the field of large phased array radar systems, and comprises an antenna feed port, a reflector plate, a suspended cross-coupled microstrip circuit board, a filter cover plate and metal vibrator arms. The filter cover plate is located on the upper surface of the reflector plate and forms a suspended air cavity together with the reflector plate. The suspended cross-coupled microstrip circuit board is located in the suspended air cavity. The inner conductor of the antenna feed port extends into the suspended air cavity and is connected with the suspended cross-coupled microstrip circuit board. The outer conductor is connected with the reflector plate. The metal vibrator arms are located on the filter cover plate. One of the metal vibrator arms is connected with the suspended cross-coupled microstrip circuit board, and the other is grounded. The radiation characteristics are realized directly on the filter cover plate. The suspended broadband high-pass filter is used to realize high suppression of the lower sideband. The original filtering performance of the filter is not changed, the profile height is basically maintained, a wider working bandwidth is realized, and the interference problem of a secondary radar on a primary radar is solved.

The application belongs to the field of thin film microstrip filter, and particularly relates to a miniaturized ultra-wideband planar filter. The application adopts a compact stub structure through an electric bridge, the stub length and interval are optimized according to the electromagnetic coupling characteristics of the 3.1-10.6 GHz frequency band, and the matching conditions of the characteristic impedance and the resonator and the dielectric substrate are strictly met; and further, the planar coupling path of the electric bridge is combined with the three-dimensional coupling of the gold wire to form a composite coupling mechanism of 'planar + three-dimensional', cooperating with the miniaturized configuration of the microstrip resonator, the overall size of the device is reduced by more than 30%, while the group delay is greatly reduced (from the traditional 0.68 ns to 0.33 ns @ 8.3 GHz), the coupling value between resonators is significantly improved, and finally the ultra-wideband coverage is realized, and the in-band interference signals can be effectively suppressed. The application effectively solves the problem in the prior art that the traditional electric bridge coupling only relies on the planar structure, the coupling path is single, the coupling value is limited, and it is difficult to balance the bandwidth and miniaturization.

Embodiments disclosed herein include a module, comprising: a substrate, wherein the substrate comprises a dielectric material, and a microstrip resonator on the substrate. In an embodiment, a microstrip transmission line is on the substrate adjacent to the microstrip resonator, and the microstrip resonator is spaced from the microstrip transmission line by a gap. In an embodiment, a ground plane on a surface of the substrate is opposite from the microstrip resonator.

The invention discloses a dual-passband reconfigurable filtering attenuator, which has independent and continuous tuning center frequency and attenuation capability, and belongs to the technical field of microwaves. The device comprises two U-shaped closed annular micro-strip resonators with different sizes and a shared H-shaped micro-strip line attenuation unit. The two resonators are oppositely arranged with the concave short edges thereof, and are respectively connected with the input / output port through slot coupling so as to generate a high-frequency passband and a low-frequency passband. By independently adjusting the variable capacitance diode bias voltage loaded on each resonator and the attenuation unit, the center frequencies of the two passbands can be respectively and independently tuned. The attenuation units are selectively coupled with odd modes of the corresponding resonators through two pairs of variable capacitance diodes on the attenuation units, and energy is discharged to a grounding resistor, so that amplitude attenuation of any one or two passbands is independently and continuously regulated and controlled. According to the invention, integration of filtering and attenuation functions is realized, and the device has the advantages of compact structure, flexible control and high integration level.

The invention relates to the technical field of microwave communication, and discloses a high in-band rejection broadband band elimination filter. The filter is based on a micro-strip resonator, and a micro-strip open-circuit branch knot is loaded in the middle of the micro-strip resonator to form an axial symmetry structure. The structure is divided into three groups of parts with the same characteristic impedance along a symmetry axis, and the working bandwidth and the in-band suppression level of the filter can be flexibly adjusted by independently adjusting the impedance ratio of each group. The structure is simple, narrow slits do not need to be machined, and the machining difficulty and cost are remarkably reduced. Compared with the prior art, about 90% of relative working bandwidth can be obtained while 40dB high in-band suppression is realized, and the problem that high in-band suppression and broadband performance are difficult to consider at the same time is effectively solved.

Embodiments disclosed herein include a module, comprising: a substrate, wherein the substrate comprises a dielectric material, and a microstrip resonator on the substrate. In an embodiment, a microstrip transmission line is on the substrate adjacent to the microstrip resonator, and the microstrip resonator is spaced from the microstrip transmission line by a gap. In an embodiment, a ground plane on a surface of the substrate is opposite from the microstrip resonator.

The application belongs to the technical field of wireless communication, and particularly relates to a reconfigurable duplexer, a radio frequency circuit and a communication device. The reconfigurable duplexer comprises seven terminal short-circuit half-wavelength microstrip resonators, namely resonator 1, resonator 2, resonator 3, resonator 4, resonator 5, resonator 6 and resonator 7, each of which is loaded with a center short-circuit stub, and the center short-circuit stub is loaded with a fixed capacitor and a variable capacitance diode; the resonator 2, the resonator 3 and the resonator 4 are used to form a first channel, the resonator 5, the resonator 6 and the resonator 7 are used to form a second channel, and the first channel and the second channel share the resonator 1; the application provides a reconfigurable duplexer, which can be flexibly switched between a duplexer function and a filter switch function by adjusting the bias states of the variable capacitance diodes, and the working frequencies of the duplexer mode and the filter switch mode can be continuously adjusted.

The utility model belongs to the technical field of filters, and particularly relates to a miniaturized substrate integrated waveguide filter with controllable passband number, which comprises a filter assembly. Comprising a lower-layer metal plate, a dielectric substrate arranged at the top of the lower-layer metal plate, an upper-layer metal plate arranged at the top of the dielectric substrate, a snakelike microstrip resonator arranged in the middle of the surface of the upper-layer metal plate, and a first excitation port and a second excitation port which are arranged at the two ends of the upper-layer metal plate; wherein the snakelike microstrip resonator is composed of an upper part and a lower part, when the upper part and the lower part have the same length, a single-passband filter is formed, and when the upper part and the lower part have different lengths, a dual-passband filter is formed; the structure is reasonable, the snakelike microstrip resonator is embedded in the upper metal surface of the substrate integrated waveguide, and the filter with a smaller size is realized by adopting an innovative method; meanwhile, on the premise that the size of the whole SIW is not changed, single-passband and double-passband conversion is achieved only by adjusting the length of the snakelike microstrip resonator.

The present invention discloses a differential duplex filtering antenna with dual-slot symmetric excitation. The antenna includes an upper dielectric substrate, a lower dielectric substrate, a metal floor, a first metal feeding microstrip line, a second metal feeding microstrip line, a metal rectangular radiation patch, a coupling slot, a metal microstrip resonator, and a first metal microstrip open resonator, a second metal microstrip open resonator, a third metal microstrip open resonator, and a fourth metal microstrip open resonator. The present invention realizes functions of radiation, duplex synthesis, channel filtering, differential feeding, and balanced-unbalanced transformation with a compact structure, ensuring good cross-polarization performance, lobe symmetry, and duplex filtering radiation ability.

An apparatus comprising of two microstrip resonators placed on two parallel surfaces of a planar dielectric substrate, electrically disconnected from each other. The apparatus further comprising a microstrip T-resonator comprising a transmission line and a stub, placed substantially in a middle of the transmission line, placed on the first surface of a planar dielectric substrate. The apparatus further comprises a split-ring resonator comprising two split rings, placed on the second surface of the substrate such that the adjacent edge of the split rings substantially aligns with the open-ended edge of the stub in the first surface. The apparatus further comprises two ground conductors, each placed on the opposite sides of the microstrip T-resonator and split-ring resonator. The apparatus further comprises a microstrip L-resonator, instead of the microstrip T-resonator, coupled to a rectifying circuit block to provide a DC voltage output signal.