107 results about "Split ring resonators" patented technology

A disclosed airborne vehicle includes split-ring resonators (split ring resonators), which may be embedded within a material. Each split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. Each split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, each may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

A disclosed leaky coaxial resonant sensor system and methods. In use, the system includes at least one split-ring resonator (SRR) embedded within a material of the component. The at least one SRR is formed from a composite material. Additionally, the at least one SRR is configured to resonate at a first frequency in response to an interrogation signal from a leaky coaxial cable antenna. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the composite material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the composite material is in a second state. A resonant frequency of the composite material may be based on physical characteristics of the composite material.

A disclosed construction structure unit may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

Methods and systems are described for split ring resonators. The split ring resonator can work as a filter that blocks 0.6GHz to 1GHz and thus acts as a tuning element and reduces coupling between columns. Certain features, such as trace elements, can reduce the Radar cross section at mid band frequencies (1.4GHz-2.6GHz) thereby unaffecting the mid bands radiators. Embodiments can also boost return loss, which is very uncommon on several other tuning pieces in the prior art.

A phase shifter includes first and second dielectric substrates opposite to each other, first and second conductive patterns on a side of the first dielectric substrate close to the second dielectric substrate, a third conductive pattern on a side of the second dielectric substrate close to the first dielectric substrate, and an adjustable dielectric layer between a layer where the first and second conductive patterns are located and a layer where the third conductive pattern is located; the third conductive pattern includes a main structure, and first and second branches connected to the main structure on two sides of an extending direction thereof respectively; the phase shifter further includes a split ring resonator on a side of the second dielectric substrate away from the third conductive pattern, and orthographic projections of the split ring resonator and the third conductive pattern on the first dielectric substrate partially overlap each other.

A disclosed construction structure unit may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

An infusion pump assembly is disclosed. The infusion pump assembly includes a reservoir for receiving an infusible fluid, a pump assembly for pumping a quantity of infusible fluid from the reservoir to an exit, a first valve assembly configured to selectively isolate the pump assembly from the reservoir, a second valve assembly configured to selectively isolate the exit from the pumping assembly, and a split ring resonator antenna having a resonant frequency comprising a plurality of planar metallic layers.

An ESA antenna includes a layer of filters between the layer of radiating elements and the ground layer. The filter layer obviates certain post processing steps. The filters define a passband at the operating range of the antenna and a stopband defined to prevent crosstalk or reduce known external interference. Each filter includes alternating cells of a resonator cell formed by two split ring resonators and a resonator cell formed by a complementary split ring resonator and a complementary patch / stub. A particular implementation of the filter defines an operating range around 23 gigahertz with a passband to stopband transition of less than 500 megahertz. Vias may connect the filter layer to a surface component layer with beamforming integrated circuits, bypassing the routing layer.

The invention belongs to the technical field of antennas, and particularly relates to an ultrathin full-space metasurface unit with dual-band amplitude-phase regulation and control and a multi-beam generator. In order to solve the problems that component design cost is high, unit amplitude is low, and incident wave energy cannot be efficiently regulated and controlled, the full-space metasurface unit comprises a first metal layer and a second metal layer, the first metal layer is located above the second metal layer, a dielectric plate is arranged between the first metal layer and the second metal layer, and the dielectric plate is located between the first metal layer and the second metal layer. A first C-shaped groove and a double split ring resonator are etched on the first metal layer from outside to inside in a hollowed-out manner, a second C-shaped groove and an elliptical groove are etched on the second metal layer from outside to inside in a hollowed-out manner, and the opening directions of the first C-shaped groove and the second C-shaped groove are perpendicular to each other. And the multi-beam generator is designed based on the total space metasurface unit.

The invention discloses a metasurface unit based on electromagnetic physical dimension joint encryption, a metasurface and a holographic encryption method, and relates to the technical field of metasurface encryption. The invention aims to solve the problem that the existing secret sharing encryption strategy limits the information capacity and endangers the security of secret information. The metasurface unit comprises a substrate, a split ring resonator and an open slot resonator, wherein the split ring resonator and the open slot resonator are located on the substrate. A plurality of metasurface units which are closely arranged in a rectangular array form a metasurface. Encrypting the to-be-encrypted image by using a chaos algorithm to generate a chaos sequence; performing XOR operation on a to-be-encrypted image and the chaos sequence to generate a ciphertext image; an incident polarization key, a system security key and a ciphertext image are simultaneously coded to different physical dimensions of a metasurface through amplitudes and phases, so that the password image and the key are embedded into four amplitude and phase channels of electromagnetic waves at different spatial positions at two different working frequencies when different polarization incidence is carried out, and encryption is completed.

The invention discloses a dual-linear polarization independent control low-profile reflective array antenna with a gain filtering characteristic. The antenna comprises a plane reflection array formed by a plurality of reflection units, and a horn antenna. The reflection unit comprises a magnetoelectric dipole loaded with a split ring resonator, an x polarization feed part and a y polarization feed part, each feed part comprises an independent feed arm and an open-circuit metal microstrip line patch, and the feed arm and the open-circuit metal microstrip line patch are connected through a metalized via hole; energy received by the magnetoelectric dipole in a working band can be coupled to the feed arm, transmitted to the open-circuit metal microstrip line patch from the feed arm through the metalized via hole, and reflected on the open-circuit metal microstrip line patch, so that the reflection phase can be changed by adjusting the length of the open-circuit metal microstrip line patch. A radiation zero point is introduced at a low frequency by utilizing the characteristics of the magnetoelectric dipole, and a radiation zero point is introduced at a high frequency by utilizing the half-wavelength resonance characteristics of the split ring resonator, so that the filtering characteristic is realized.

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 ESA antenna includes a layer of filters between the layer of radiating elements and the ground layer. The filter layer obviates certain post processing steps. The filters define a passband at the operating range of the antenna and a stopband defined to prevent crosstalk or reduce known external interference. Each filter includes alternating cells of a resonator cell formed by two split ring resonators and a resonator cell formed by a complementary split ring resonator and a complementary patch / stub. A particular implementation of the filter defines an operating range around 23 gigahertz with a passband to stopband transition of less than 500 megahertz. Vias may connect the filter layer to a surface component layer with beamforming integrated circuits, bypassing the routing layer.

The present disclosure describes dual-band antenna arrays and related methods for manufacturing and implementing dual-band antenna arrays. One exemplary dual-band antenna array comprises a top layer of fused silica substrate; a bottom layer of fused silica substrate; a ground plane positioned between the top and bottom layers of fused silica substrate, wherein the ground plane comprises layers of three different metals; antenna patch elements arranged on top of the top layer of fused silica substrate; an input feedline arrange on the bottom layer of the fused silica substrate; and a meanderline complimentary split ring resonator structure etched on a top surface of the ground plane, wherein the input feedline is directly coupled to the meanderline complimentary split ring resonator structure and is configured to excite a plurality of resonance frequencies of the antenna patch elements.

The invention provides an antenna device and electronic equipment. The antenna device includes: a circuit board; the first antenna is an inverted-F antenna and comprises a feed-in end and a grounding end which extend outwards from the circuit board, and an antenna conductor connected with the feed-in end and the grounding end; the second antenna is an antenna based on a split ring resonator, the second antenna comprises a first branch knot, a second branch knot, a third branch knot and a fourth branch knot, the first branch knot and the second branch knot extend outwards from the circuit board, and a gap between the third branch knot and the fourth branch knot forms an opening part of the split ring resonator; the grounding end of the first antenna and the first branch knot are the same radiator. According to the antenna device and the electronic equipment provided by the scheme, the first antenna and the second antenna are utilized to form the common radiator antenna, and the grounding end of the first antenna is used as a part of the radiator of the second antenna, so that the size of the antenna device is reduced, and the isolation of the antenna device is improved.

The invention relates to an electric control terahertz double-frequency phase modulator which comprises a sapphire substrate and a metasurface structure resonance array located on the surface of the sapphire substrate. Each resonance unit comprises a T-shaped metal resonator, an inverted T-shaped metal resonator and a square split ring resonator. The middle electric control phase change patch is embedded in a gap between the T-shaped resonator and the inverted T-shaped metal resonator, and the right electric control phase change patch is embedded in an opening of the split ring resonator. The two sides of the metasurface structure resonance array are each fixedly provided with an electrode which is connected with the positive electrode and the negative electrode of the direct-current power source. The phase modulator provided by the invention can realize dual-band, large-bandwidth and more than 100-degree phase modulation through power-on, and the adjustable maximum phase exceeds 140 degrees. The terahertz dual-frequency phase modulator has a wide application prospect in the fields of terahertz phased array radar, terahertz communication, terahertz imaging and the like.

The invention relates to a high-sensitivity differential microfluid sensor based on a microstrip line, which is used for measuring the concentration of a water-ethanol mixed solution, and comprises the microstrip line configured with a symmetrical shunt / combiner, a pair of split ring resonators with bent grooves, and a microfluid channel, a dielectric layer and a metal ground which are arranged at the tops of the split ring resonators from the top layer to the bottom layer. Wherein the bent groove parts of the two SRRs are areas with the maximum electric field intensity, and a micro-fluidic channel made of polydimethylsiloxane (PDMS) is placed in the areas. A sensor parameter curve is measured by a vector network analyzer (VNA). The suggested size of the sensor is 30 * 20 mm < 2 >, and the working frequency is 4.8 GHz. Experimental results show that the resonant frequency of the water-ethanol mixture with the concentration range of 0-100% has linear shift of 1250 MHz, and the average sensitivity Savf of detection is 0.987%. The sensor has the characteristics of compactness, high sensitivity, high measurement precision, no environmental interference and the like, and has wide application prospects in the fields of biomedical detection, material analysis, environmental monitoring and the like.

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.

A disclosed component may include at least one split-ring resonator, which may be embedded within a material. The split ring resonator may be formed from a three-dimensional (3D) monolithic carbonaceous growth and may detect an electromagnetic ping emitted from a user device. The split ring resonator may generate an electromagnetic return signal in response to the electromagnetic ping. The electromagnetic return signal may indicate a state of the material in a position proximate to a respective split ring resonator. In some aspects, the split-ring resonator may resonate at a first frequency in response to the electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the 3D monolithic carbonaceous growth may be based on physical characteristics of the material.

The invention discloses an isotropic metasurface for ultrasensitive detection of extracellular vesicles. A square unit cell in the isotropic metasurface is composed of a pair of orthogonal I-shaped protruding structures and four C-shaped split ring resonators. The optical metasurface adopts an isotropic metasurface structure design, and the structure shows the same response to x and y polarization incident light and generates isotropic resonance response. An annular dipole with characteristic end-to-end configuration is generated through interaction between the induction magnetic dipoles, and the annular mode is remarkably enhanced. The optical metasurface can be used for carrying out ultra-sensitive detection on extracellular vesicles, the correlation R2 is 0.962, and the LoD of the extracellular vesicles is 5 / mu L.

A system for neuromodulation includes a split-ring resonator (SRR) comprising a resonance circuit, the SRR being implantable in a cranial target site and a source of microwave signals, wherein the microwave signals are deliverable wirelessly to couple with the SRR to produce a localized electrical field, wherein the localized electrical field inhibits one or more neurons at the cranial target site with submillimeter spatial precision.

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.

A broadband ring resonator (300, 400, 500, 600, 601) including a substrate, a conductive trace on the substrate comprising a first end and a second end, wherein the conductive trace encloses an interior region except for a gap between the first end and the second end, and at least one radial stub (301, 401, 403, 501, 503, 505, 603, 605, 607, 609, 611, 613) integrated into the conductive trace and a method (700) of enhancing a bandwidth of a split ring resonator including acquiring a substrate, forming a conductive trace on the substrate comprising a first end and a second end, wherein the conductive trace encloses an interior region except for a gap between the first end and the second end, and integrating at least one radial stub (301, 401, 403, 501, 503, 505, 603, 605, 607, 609, 611, 613) into the conductive trace.

A signal transmission control device may include a device layer including a conductive layer and a dielectric layer disposed on the conductive layer, and a conductive line disposed on the dielectric layer and extending across a first inverted split ring resonator (ISRR) and a second inverted split ring resonator (ISRR). The device layer may define the first ISRR and the second ISRR spaced apart from each other, and a signal transmission characteristic between a first end and a second end of the conductive line may be controlled by the first ISRR and the second ISRR.

The invention discloses a broadband MIMO (Multiple Input Multiple Output) antenna array for a closed space, which comprises a plurality of antenna plate main bodies, and the antenna plate main bodies are arranged in an annular array along a side ridge; the antenna plate main body comprises a dielectric substrate and an antenna assembly, and the antenna assembly comprises a metamaterial assembly, a director, an excitation arm, a reflector and a balun module; in the direction from the upper end to the lower end of the dielectric substrate, the metamaterial assembly, the director, the excitation arm and the balun module are sequentially distributed in the middle on the front surface of the dielectric substrate, and the reflector is arranged on the back surface of the lower end part of the dielectric substrate; the metamaterial component, the director and the excitation arm are sequentially arranged at intervals, and the excitation arm is connected with the balun module through a microstrip line. The combination of the linear excitation arm and the bent excitation arm is designed, arc induction current is excited on the director to resonate with the rectangular split-ring resonator, and the Yagi antenna has the advantages of widening the bandwidth of the Yagi antenna and improving the gain of the antenna.

The present invention provides a chiral metasurface device with strong circular dichroism based on adjustable vanadium dioxide. The device is characterized in that it is composed of a gold substrate (1), a silicon dioxide dielectric layer (2), a vanadium dioxide layer (3), a silicon dioxide dielectric layer (4), a gold split ring resonator (5), and a gold three-circular arc resonator (6). Due to the interaction between the top metal structure and the dielectric layer, a strong circular dichroism is generated, and the conductivity of the vanadium dioxide can be changed by changing the temperature of the vanadium dioxide, so that the height of the circular dichroism peak can be adjusted. The present invention has the advantages of good circular dichroism effect, a peak value of up to 0.91, adjustable peak height and left and right, reversible circular dichroism, and insensitivity to the incident angle and polarization angle, etc. It can be used in the fields of optical detection and medical detection, and has a very broad application prospect.

The present invention discloses a vertically polarized omnidirectional radiating notch antenna for WLAN, which comprises a dielectric substrate and a coaxial feed cable. A pair of dipoles are printed along the z-axis direction on the upper layer of the dielectric substrate, and a pair of split ring resonators are printed along the y-axis direction. A coplanar waveguide structure is printed on the upper layer of the lower arm of the dipole, and a layer of metal is printed on the lower layer of the lower arm. The inner conductor of the coaxial cable passes through the dielectric substrate and is connected to the upper metal layer of the lower arm of the dipole, while the outer conductor is connected to the lower metal layer of the lower arm. The dipole is fed by the coaxial cable. A metal layer with the same size and shape as the lower part of the upper layer dipole is printed on the lower layer of the dielectric substrate. The planar notch antenna proposed by the present invention can achieve stable omnidirectional radiation characteristics and small circularity. Within the working frequency band, the antenna has high gain and small cross-polarization components in the horizontal plane. It is suitable for omnidirectional coverage WLAN applications that require notch function.

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.

This device comprises a substrate (101), fine particles (102) dispersed in the substrate (101), and a circuit (103) formed on the surface of the substrate (101). The substrate (101) is composed of a hydrogel which is composed of a hydrophilic material that is edible, and which solates at body temperature. The circuit (103) is, for example, a resonance circuit such as an LCR resonance circuit or a split ring resonator. The circuit (103) can be composed of an electroconductive material that is edible.

The utility model discloses an antenna assembly and network equipment, and relates to the technical field of antennas. The integrated level of the antenna is improved, and the antenna assembly is miniaturized. According to the specific scheme, the antenna assembly comprises a first substrate, a second substrate, a first antenna, a second antenna, a first feeder line, a second feeder line and a separator. The first feed end of the first feed line is used for feeding the first antenna, and the vertical projection of the first feed end on the first surface is a first area. The second feed end of the second feed line is used for feeding the second antenna, and the vertical projection of the second feed end on the first surface is a second area. The vertical projection of the separator on the first surface covers one of the first area or the second area. The spacer may be a split ring resonator. Under the condition that the two substrates of the antenna assembly are stacked, high isolation is ensured. The antenna number of the system is reduced through high integration, and the system can be applied to dual-band or three-band multi-link operation, and can be applied to scenes such as FTTR and the like.