6 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 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 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.

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.

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.