35 results about "Split ring resonators" patented technology

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 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 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.

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 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 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.

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 provides an intracranial pressure sensor based on a split-ring resonator structure, a monitoring system and a monitoring method, and belongs to the technical field of medical instruments. The intracranial pressure sensor is composed of a substrate, an interdigital capacitor-split resonant ring structure and a micro-channel pressure conversion structure. Intracranial pressure acts on the micro-channel film to drive the gallium-indium eutectic alloy to displace, the interdigital capacitance is modulated in real time, resonant frequency deviation is caused, and 0.47 MHz / kPa high-sensitivity pressure monitoring is achieved. The monitoring system comprises an intracranial pressure sensor, an in-vitro radio frequency read-write device and a data processing terminal, and the intracranial pressure can be continuously monitored in real time for a long time. Compared with an existing intracranial pressure detection means, the intracranial pressure sensor based on the split-ring resonator structure, the monitoring system and the monitoring method have the advantages that high sensitivity, high stability, good repeatability and excellent wireless readability are achieved on the basis that an integrated chip is not needed, and a better solution is provided for high-precision minimally invasive intracranial pressure monitoring.

The application discloses a transmissive array antenna with high selective gain filtering characteristics, which comprises a planar transmissive array as a transmissive surface and a horn antenna as a feed source; a 180-degree transmissive phase difference is realized by rotating a feed part of a magnetic electric dipole of the planar transmissive array by 0 degree or 180 degrees around a central axis; the planar transmissive array comprises a plurality of periodically and seamlessly distributed transmissive units, each of which generates a different compensation phase when subjected to a y-polarized incident wave, so as to form a required beam direction; the method is based on a magnetic electric dipole antenna loaded with split ring resonators, can realize higher selectivity under a planar structure, avoids the design of a complex filter part and a higher profile of a three-dimensional structure in an antenna-filter-antenna structure, can be widely applied to long-distance communication, and can more fully utilize limited electromagnetic spectrum.

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.

The application discloses a low-profile reflective array antenna with gain filtering characteristics and dual linear polarization independent control. The application comprises a planar reflective array composed of a plurality of reflective units, a horn antenna; the reflective unit comprises a magnetic electric dipole loaded with a split ring resonator, an x polarization feeding part and a y polarization feeding part, each feeding part comprises an independent feeding arm and an open metal microstrip line patch, the feeding arm and the open metal microstrip line patch are connected through a metallized via hole, the energy received by the magnetic electric dipole can be coupled to the feeding arm within the working band, the energy is transmitted from the feeding arm to the open metal microstrip line patch through the metallized via hole, and reflection occurs at the open metal microstrip line patch, so the reflection phase can be changed by adjusting the length of the open metal microstrip line patch. At a low frequency, a radiation zero point is introduced by using the characteristics of the magnetic electric dipole, and at a high frequency, a radiation zero point is introduced by using the half-wave resonance characteristics of the split ring resonator, so that the filtering characteristics are realized.

The present application provides an antenna device and an electronic device. The antenna device includes: a circuit board; a first antenna, which is an inverted F antenna, and includes a feed end and a ground end extending outward from the circuit board, and an antenna conductor connected to the feed end and the ground end; a second antenna, which is an antenna based on a split ring resonator, and includes a first branch, a second branch, a third branch, and a fourth branch, wherein the first branch and the second branch extend outward from the circuit board, and the gap between the third branch and the fourth branch forms the opening portion of the split ring resonator; wherein the ground end of the first antenna and the first branch are the same radiator. The antenna device and electronic device provided by the above scheme reduce the size of the antenna device and improve the isolation of the antenna device by utilizing the first antenna and the second antenna to form a common radiator antenna, and using the ground end of the first antenna as part of the radiator of the second antenna.

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 present invention discloses a microwave flexible array sensor for ice detection, belonging to the field of sensors. The sensor primarily comprises: a central flexible substrate layer 4; an upper flexible dielectric layer 3 and a lower flexible dielectric layer 6 tightly attached to either side of the flexible substrate layer 4; a sensitive array element 1 and a metal microstrip line 5 structure attached to the upper flexible dielectric layer 3; and a metal reference ground 2 attached to the lower flexible dielectric layer 6. In the present invention, an outer resonant ring 33 and an inner resonant ring 34 form a complementary split ring resonator (CSRR). The CSRR provides a narrow insertion loss bandwidth, making its capacitance highly sensitive to objects placed on the sensitive element 1. Specifically, the notch frequency is highly sensitive to changes in the dielectric constant of the ice layer, resulting in superior quality factor and accuracy to conventional planar resonator sensors. The addition of additional rings has minimal impact on sensor performance, and coupling with the outer ring 32 increases the resonator's equivalent capacitance, enhancing the fringe electric field and improving interaction with the test sample. The interdigitated structure at the center of the sensitive element 1 enhances the electric field density on the sensitive element 1, providing an expanded capacitive coupling gap, thereby achieving miniaturization and, importantly, greater sensitivity to changes in ice thickness.

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.

The invention discloses an electric tuning terahertz filter based on integration of a single split ring resonator and graphene, which is characterized in that the Fermi level of the graphene is adjusted from 0 to 1.5 eV, the gap capacitance of the SRR can be continuously adjusted and controlled, and the reversible blue shift (delta f is approximately equal to 1.30 THz, and the tuning range reaches 109%) of LC resonance from 1.19 THz to 2.50 THz is realized. According to full-wave simulation prediction, the modulation depth exceeds 98% in the unbiased state, exceeds 94% in the whole tuning range and is kept at 95% or above at the low voltage end and the high voltage end. The resonance quality factor Q drops from about 20.6 at 0 eV to a critical damping state (Qlt; 1.5, the occurrence between 0.05-0.4 eV), and about 48 when it recovers to 1.5 eV. Group delay measurement shows that the dispersion characteristic can be controlled through grid voltage programming, so that slow light operation (slow light delay is about 0.35 ps) and low delay response are supported. The method is suitable for a 6G transceiver, a hyper-spectral imaging system and a self-adaptive sensing platform with high frequency spectrum agility.

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 technology described herein is directed towards phase-change material-based (e.g., chalcogenide) radio frequency components including for use in unit cells of a reconfigurable intelligent surface. A multi-state tunable capacitive element for reconfigurable operation is described, in which phase-change material operates as a switching element to controllably vary capacitance of each unit cell. The multi-state tunable capacitive element can be made of multiple subcircuits in which capacitors of various values can be selectively switched in or out to vary the capacitance of the tunable capacitive element. Arranging the subcircuits with capacitors of different values, and actuating each one in or out of the overall capacitive element, an analog-like variable capacitor is realized that provides more granular phase shift control of cells of a reconfigurable intelligent surface. When used with a dual split ring resonator capacitor, phase changes of a unit cell are achieved that redirect electromagnetic waves of two different frequencies.

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.