21 results about "Split ring resonators" patented technology

The invention discloses a double-frequency phase independent regulation and control metasurface unit and an application method. The metasurface unit comprises a dielectric substrate; the two sides of the dielectric substrate are covered with a first metal layer and a second metal layer respectively. Each of the first metal layer and the second metal layer comprises a metal patch main body and a phase regulation and control structure, the center of the metal patch main body is provided with a circular hollow, and the phase regulation and control structure is arranged in the circular hollow; the phase regulation and control structure of the first metal layer and the phase regulation and control structure of the second metal layer are in 180-degree rotational symmetry; the double-connecting-ring structure is an axisymmetric structure; an open circular split ring resonator is arranged in the double-connecting-ring structure, and an electromagnetic isolating ring group is arranged in the open circular split ring resonator; according to the invention, 360-degree independent phase control on electromagnetic waves at a low-frequency band and a high-frequency band is realized.

An antenna device comprises a case and an antenna element. The antenna element is arranged in the case and radiates a radio wave with a predetermined frequency which has a plane of polarization in parallel to a predetermined plane. The case is formed with a predetermined opening. The predetermined opening has two main openings and a coupling opening. The two main openings are apart from each other in a first direction perpendicular to the predetermined plane. The coupling opening couples the two main openings together in the first direction. The coupling opening has a size smaller than another size of each of the two main openings in a second direction perpendicular to the first direction. The predetermined opening forms a split ring resonator which resonates at the predetermined frequency and radiates a radio wave corresponding to the radio wave radiated from the antenna element.

The invention provides a passive broadband non-reciprocal electromagnetic wave absorber and a manufacturing method, and the passive broadband non-reciprocal electromagnetic wave absorber comprises three layers of structures from bottom to top: a bottom layer metal reflection backboard, a ferrite substrate and a metal complementary split ring resonator (CSRR) array. Wherein the bottom metal reflection back plate, the ferrite substrate and the CSRR array are square plate-shaped structures with the same shape, and the ferrite substrate is arranged between the bottom metal reflection back plate and the CSRR array; the ferrite substrate is made of La-doped BaFe12O9, and has an asymmetric magnetic conductivity tensor characteristic; the surface layer of the CSRR array is provided with a metal complementary opening; and the CSRR array is coupled with the non-reciprocal characteristic of the ferrite substrate to form differential absorption of left-hand circularly polarized waves and right-hand circularly polarized waves.

The application discloses a kind of microwave metamaterial high-temperature sensors based on planar waveguide and preparation method thereof, it is related to sensor technical field.The sensor includes: by top to bottom sequentially arranged top metal layer, dielectric substrate and bottom metal layer;Top metal layer integrates single square complementary split ring resonator structure and periodic arrangement of annular complementary split ring resonator structure;Square complementary split ring resonator structure is located at the center position of top metal layer;Annular complementary split ring resonator structure is located at the two sides of top metal layer, and the opening direction in two sides annular complementary split ring resonator structure is opposite.Wherein, dielectric substrate, top metal layer, bottom metal layer and annular complementary split ring resonator structure form planar waveguide, square complementary split ring resonator structure forms resonant loop and carries out wireless signal transmission, the present application can realize wireless passive, real-time in situ, high-quality factor of harsh environment superhigh temperature monitoring.

The application discloses application of an active double-mode microwave micro-flow sensor to liquid dielectric constant detection. The double-mode resonant unit is formed by a microstrip line and a split ring resonator, and has high and low resonant frequency points. The low-frequency resonant frequency point moves to a low frequency with the increase of the dielectric constant, and the high-frequency frequency point moves to a high frequency with the increase of the dielectric constant, thereby effectively increasing the sensitivity of the passive resonant unit. A negative impedance circuit is embedded at the rear end of the microwave passive sensor to form an oscillator, namely a microwave passive resonator and a radio frequency amplifier, and the oscillation frequency changes with the change of the dielectric constant of the material to be detected, and the change of the dielectric constant is mapped to the change of the oscillation frequency. The relationship between the dielectric constant and the resonant frequency is converted to the relationship between the dielectric constant and the direct current voltage through a demodulation circuit. The application has the advantages of high sensitivity, low price, convenience for carrying, etc., and is a high-performance and low-cost system-level detection device which will play an important role in the detection field of liquid materials.

The invention discloses a microstrip band-stop filter with a wide upper passband, and relates to the technical field of radio frequency passive devices, and the microstrip band-stop filter comprises an electromagnetic shielding cavity, a dielectric substrate, a microstrip circuit located on the front surface of the dielectric substrate, and a grounding metal layer located on the back surface of the dielectric substrate. The microstrip circuit is composed of an input feeder line, an output feeder line and a four-stage cascade filter network located between the input feeder line and the output feeder line. The stopband center frequencies of the four filtering units are distributed in a staggered manner so as to broaden the stopband bandwidth; each filtering unit is composed of two U-shaped micro-strips and an interdigital capacitor, and symmetrical rectangular split ring resonators loaded with the interdigital capacitors and double-path arc-shaped parallel micro-strip lines are adopted at the interstage connecting positions of the filtering units respectively. According to the invention, the low insertion loss, high selectivity and miniaturization design of the filter are realized, and the technical problem that the existing band elimination filter is difficult to adapt to a complex and changeable signal environment due to the limited passband width is solved.

The invention discloses a filtering power divider and a signal processing method. The filtering power divider comprises an input end used for inputting a first signal; the two output ends are used for outputting two paths of second signals; the filtering power division structure comprises two dual-band filtering structures and a power division structure, each dual-band filtering structure comprises a half-mode substrate integrated waveguide filter loaded with a first complementary split ring resonator (CSRR) structure, and the first CSRR structure is obtained by cascading two CSRR structures. And the filtering power division structure is used for performing dual-band filtering and power division on the first signal input from the input end to obtain the two paths of second signals, and outputting the two paths of second signals through the two output ends.

The application provides a low-profile duplex filter antenna and belongs to the technical field of wireless energy transmission.The low-profile duplex filter antenna comprises an upper metal floor, a dielectric substrate, a lower metal floor, a cavity column, a perturbation via and a suppression via; the lower metal floor is arranged on the lower surface of the lower dielectric substrate; the upper metal floor is arranged on the upper surface of the dielectric substrate; the cavity column penetrates through the upper metal floor, the dielectric substrate and the lower metal floor and surrounds a substrate integrated waveguide cavity; the perturbation via and the suppression via penetrate through the upper metal floor, the dielectric substrate and the lower metal floor; a cross-shaped groove is etched in the center of the upper metal floor; two complementary split ring resonator grooves with different diameters are etched at the connection between the circular cavity and the two side rectangular cavities of the upper metal floor; two feed lines are led out from the two ends of the upper metal floor. The antenna has the characteristics of low profile, is easy to integrate, and simultaneously reduces the manufacturing cost of the antenna and facilitates processing and manufacturing.

Embodiments of charged particle beam systems, components, and methods for extracting charged particles from a gas are described. In a first aspect, a charged particle source includes a resonator. The resonator may include a dielectric substrate defining a first side and a second side, the second side opposite the first side. The resonator may include a first conductive layer disposed on the first side. The first conductive layer may be disposed according to a pattern including a loop portion. The pattern may define a gap in the loop portion of the first conductive layer. The resonator may also include a second conductive layer disposed on the second side. The charged particle source may also include a source electrode. A source electrode may be disposed adjacent the first side. The source electrode may be offset from the dielectric substrate.

A biometric wearable device is embodied in a finger ring or smart watch with radiowave or microwave energy emitters / transmitters and energy receivers to measure the level of a biometric parameter such as body oxygenation, hydration, or glucose level. The energy emitter / transmitter and the energy receiver can be parallel, nested, and / or comprise a two-dimensional array. The device can further comprise a split ring resonator located between the energy emitter / transmitter and the energy receiver.

The disclosure provides a wireless power transmitting device and a method for detecting an approaching object by the wireless power transmitting device. According to the disclosure, a wireless power transmitting device may comprise: a power amplifier, a transmission resonator including a coil, and configured to receive an electrical signal corresponding to a first frequency, which is output through the power amplifier, and to form a magnetic field by the received electrical signal corresponding to the first frequency to transmit power, an antenna configured in a shape corresponding to any one side of a symmetrical axis of a split ring resonator (SRR) antenna, disposed adjacent to the transmission resonator, and configured to receive a signal corresponding to a second frequency, a sensing circuit configured to sense at least part of the signal corresponding to the second frequency transmitted to the antenna, and a controller configured to identify whether a human body approaches, based on a signal sensed through the sensing circuit. A first terminal of the sensing circuit may be connected to a first portion of the antenna, and a second terminal of the sensing circuit may be connected to the coil of the transmission resonator.

Embodiments of charged particle beam systems, components, and methods for extracting charged particles from a gas are described. In a first aspect, a charged particle source includes a resonator. The resonator may include a dielectric substrate defining a first side and a second side, the second side opposite the first side. The resonator may include a first conductive layer disposed on the first side. The first conductive layer may be disposed according to a pattern including a loop portion. The pattern may define a gap in the loop portion of the first conductive layer. The resonator may also include a second conductive layer disposed on the second side. The charged particle source may also include a source electrode. A source electrode may be disposed adjacent the first side. The source electrode may be offset from the dielectric substrate.

Embodiments of charged particle beam systems, components, and methods for extracting charged particles from a gas are described. In a first aspect, A charged particle source includes a resonator. The resonator can include a dielectric substrate defining a first side and a second side, the second side opposite the first side. The resonator can include a first conductive layer disposed on the first side. The first conductive layer can be disposed in accordance with a pattern comprising a ring portion. The pattern can define a gap in the ring portion of the first conductive layer. The resonator can also include a second conductive layer disposed on the second side. The charged particle source can also include a source electrode. The source electrode can be disposed proximal to the first side. The source electrode can be offset from the dielectric substrate.

Embodiments of charged particle beam systems, components, and methods for extracting charged particles from a gas are disclosed.SOLUTION: In a first aspect, a charged particle source includes a resonator. The resonator may include a dielectric substrate defining a first side and a second side opposite the first side. The resonator may include a first conductive layer disposed on the first side. The first conductive layer may be disposed according to a pattern that includes a ring portion. The pattern may define a gap in the ring portion of the first conductive layer. The resonator may also include a second conductive layer disposed on the second side. The charged particle source may also include a source electrode. The source electrode may be disposed proximate to the first side. The source electrode may be offset from the dielectric substrate.SELECTED DRAWING: Figure 1

Embodiments of charged particle beam systems, components, and methods for extracting charged particles from a gas are described. In a first aspect, A charged particle source includes a resonator. The resonator can include a dielectric substrate defining a first side and a second side, the second side opposite the first side. The resonator can include a first conductive layer disposed on the first side. The first conductive layer can be disposed in accordance with a pattern comprising a ring portion. The pattern can define a gap in the ring portion of the first conductive layer. The resonator can also include a second conductive layer disposed on the second side. The charged particle source can also include a source electrode. The source electrode can be disposed proximal to the first side. The source electrode can be offset from the dielectric substrate.

A biometric wearable device is embodied in a smart watch or finger ring with radiowave or microwave energy emitters / transmitters and energy receivers to measure the level of a biometric parameter such as body oxygenation, hydration, or glucose level. The energy emitter / transmitter and the energy receiver can be parallel, nested, and / or comprise a two-dimensional array. The device can further comprise a split ring resonator located between the energy emitter / transmitter and the energy receiver.

The utility model provides a terahertz metasurface biosensor with a double-sided independent sensing function, which relates to the technical field of biomedical detection and advanced materials, and comprises a substrate made of a material with high permeability to terahertz waves, and the thickness of the substrate is 100m; the first resonator array is integrated on the front surface of the substrate and comprises a plurality of first resonators which are periodically arranged along the X axis and the Y axis of the substrate; the first resonator is an asymmetric split ring resonator, the radius of a circular ring-shaped main body is 30 m, the annular width is 5 m, and the opening width is 5 m; and the second resonator array is integrated on the back surface of the substrate and comprises a plurality of second resonators which are periodically arranged along the X axis and the Y axis of the substrate, the second resonators are asymmetric split ring resonators, the radius of an annular main body is 17.5 m, the annular width is 3 m, and the opening width is 3 m. The biosensor provided by the utility model realizes a double-sided sensing function, and double-sided sensing is mutually independent and does not influence each other, so that the sensing accuracy and efficiency are greatly improved.

The application relates to the technical field of carbon dioxide sensors of porous materials, in particular to a microwave CO2 sensor based on C 60 @MAF-66, a manufacturing method and a detection method thereof, the manufacturing method comprises the following steps: S1, selecting two complementary split ring resonator loaded half-mode substrate integrated waveguides as a sensing circuit; S2, dispersing C 60 @MAF-66 in ethanol to form a slurry; S3, coating the slurry in the step S2 on a resonator electric field concentration area, and obtaining a microwave CO2 sensor after drying and solidification. The microwave CO2 sensor obtained by the application can effectively prevent competitive adsorption of sulfur dioxide and corresponding deviation of carbon dioxide.

The application discloses a double-sided attached liquid dielectric constant detection microwave sensor and belongs to the technical field of microwave sensors. The sensor mainly comprises a thin-wall container 3, a metal defect-free film 1 closely attached to the inner wall of the thin-wall container 3, and a metal microstrip line film 2 attached to the outer wall of the thin-wall container 3; the metal defect-free film 1 and the metal microstrip line film 2 are attached to the inner and outer walls of the same part of the thin-wall container 3, and the lower edges of the two films are flush; the metal defect-free film 1 is composed of a flexible dielectric substrate 5 and a metal reference ground 4 printed on the flexible dielectric substrate 5, the metal reference ground 4 is etched with a nested complementary split ring resonator (NCSRR) 10, and the NCSRR 10 is a dumbbell-shaped CSRR 21 internally nested with a dumbbell-shaped split ring resonator (SRR) 22 which is the same in shape. The microwave sensor is not limited to a rigid flat plate structure, can be used on some substrates with arc shapes, and makes the selection of the substrate more flexible; the new resonance structure NCSRR is proposed, so that the sensitivity is significantly improved, and the quality factor is also improved correspondingly.

The utility model discloses a waveguide type microwave detection probe of split ring resonator loading, including waveguide, one end fixed connection of waveguide has the connecting flange, and the opposite side fixed connection of connecting flange and waveguide has dielectric plate, and the recess is set up to the center of dielectric plate, and the recess fixedly connected has annular copper sheet, and the annular copper sheet fixedly connected has resonance ring subassembly, wherein resonance ring subassembly is by two identical size, and the notch direction opposite resonance ring is composed. The device can efficiently excite second harmonic through the setting of two resonance rings, thereby make two resonance rings obtain wider resonance frequency band and greater reflection amplitude, make the electric field and the magnetic field that excited be stronger, have more advantage when carrying out the nondestructive testing of metal.

The invention discloses a terahertz dielectric constant sensor and method based on SIW and CSRR. The sensor is of a three-layer planar structure and comprises a medium substrate and metal layers on the upper surface and the lower surface of the medium substrate. Two groups of nested complementary split ring resonators (CSRR) which are symmetrically arranged are etched on the top layer metal, and each group of CSRR consists of a large ring and a small ring which are opposite in opening direction and overlapped in circle center; metalized through hole arrays are arranged on two sides along the signal transmission direction and form a substrate integrated waveguide (SIW) structure together with the upper metal layer and the lower metal layer. A to-be-detected object is placed above a resonance area, resonance frequency deviation caused by the to-be-detected object is detected, and the dielectric constant can be calculated by using a pre-stored calibration relation. According to the invention, the closed field constraint characteristic of the SIW and the strong field local effect of the CSRR are combined, and the device has the advantages of high Q value, high sensitivity, miniaturization, easy integration and wide sample applicability, and is especially suitable for accurate and lossless dielectric measurement of the terahertz frequency band.