11 results about "Open loop resonator" patented technology

A sensing device and a method for sensing an electrical property of a test sample is provided. The sensing device includes a substrate, and a closed loop resonator and an open loop resonator arranged on the substrate, and are arranged in a cascade configuration, the open loop resonator including a first loop end and a second loop end arranged at an edge of the substrate and are configured to be in contact with the test sample. In this regard, the closed loop resonator is configured to couple in an input excitation and to transfer the input excitation towards the open loop resonator. Furthermore, the open loop resonator is configured to generate localized electric fields between the first loop end and the second loop end propagating through the test sample.

Provided is a frequency domain-based printable chipless radio frequency identification (RFID) tag of a quadrilateral open resonator, and belongs to the field of radio frequency identification. The frequency domain-based printable chipless RFID tag of a quadrilateral open resonator includes a rectangular dielectric substrate having a metal grounding layer disposed at a bottom thereof. Four groups of quadrilateral open resonance units and two parallel symmetrical antennae are disposed above the rectangular dielectric substrate, and each group of quadrilateral open resonance units are symmetrically disposed on two sides of the two parallel symmetrical antennae. The present disclosure utilizes the quadrilateral open resonator to encode data, and capacitance and inductance of the resonance unit can be adjusted, so that the tag has the advantages of convenient encoding, high encoding density, and miniaturization.

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 present invention discloses a space electromagnetic energy collection metamaterial antenna, antenna array and conversion system. The antenna includes a first dielectric substrate, a radiation layer, a grounding plate and a coaxial cable. The radiation layer and the grounding plate are respectively laid on the upper and lower sides of the first dielectric substrate. The radiation layer is a W-shaped patch composed of four open-loop resonators back to back. A feeding hole that runs through the first dielectric substrate is provided. The feeding hole is located at the center of the radiation layer. The feeding layer is laid on the inner wall of the feeding hole. The feeding layer is electrically connected to the radiation layer. The grounding plate is provided with an avoidance position near the feeding hole. The W-shaped radiation layer is formed by four open-loop resonators back to back, so that the antenna structure as a whole presents the properties of a magnetic single negative electromagnetic metamaterial, and has good directivity, wide frequency band, small standing wave ratio, and is easy to match impedance, so that electromagnetic energy in more frequency bands can be collected, and it is easy to form impedance matching with a rectifier amplifier circuit to meet the requirements of collecting space electromagnetic energy.

This invention belongs to the field of microwave antenna and RF front-end circuit technology, specifically relating to a broadband filter dielectric resonator antenna with wide harmonic suppression characteristics and a method for controlling its radiation characteristics. The method includes the following steps: obtaining an initial electromagnetic state parameter set and performing fundamental mode field distribution decoupling calculations; constructing an open-loop feeder partially coupled topology to generate a hybrid broadband response signal set; parsing the passband envelope and attenuation determination to map a folded open-loop resonator to generate lower stopband zeros; determining the harmonic frequency band energy density threshold to trigger a multi-topology notch filter to generate an upper stopband zero array; and compensating for phase group delay and gain flatness to output the converged final radiation state parameters of the antenna. This invention overcomes the problems of multimode interference between the feed network and the radiator, the inability to independently generate stopband radiation zeros, and nonlinear phase group delay shift caused by the lack of distributed notch filter node cooperative configuration.

The invention discloses a W-band GaAs on-chip integrated waveguide linear phase filtering network based on external phase equalization. Group delay planarization and size miniaturization are realized through an external equalization theory and an innovative resonant cavity layout and coupling mechanism. The core structure comprises a four-order SIW filter, a 3dB bridge, and two single-port reflection-type open-loop resonators. The output end of the four-order SIW filter is coupled with one port of the 3dB bridge, the two single-port reflective open-loop resonators are respectively connected with the other two ports of the 3dB bridge, and the last port of the 3dB bridge is used as the output port of the whole filter network.

A sensing device (100) is provided for sensing an electrical property of a test sample. The sensing device comprises a substrate (101), and a closed loop resonator (106) and an open loop resonator (108) arranged on the substrate (101), and are arranged in a cascade configuration, the open loop resonator (108) comprises a first loop end (109) and a second loop end (110) arranged at an edge of the substrate (101) and are configured to be in contact with the test sample. In this regard, the closed loop resonator (106) is configured to couple in an input excitation and to transfer the input excitation towards the open loop resonator (108). Furthermore, the open loop resonator (108) is configured to generate localized electric fields between the first loop end (109) and the second loop end (110) propagating through the test sample.

A dual-frequency WiMAX filter based on an embedded split ring comprises an input coupling end, a resonance part and an output coupling end, and the input coupling end is an L-shaped folded microstrip line with three loaded branches; the resonance part comprises two same resonance units, and the two resonance units are arranged side by side and are distributed and arranged in a central symmetry manner relative to the central point of the filter; the structure of the output coupling end and the structure of the input coupling end form a mirror symmetry relation with respect to a symmetric line, and the symmetric line is the center line of the filter. According to the invention, the resonator embedded with the split ring is used, and for 2.45 and 3.5 GHz frequency points of WiMAX, the filter has better passband and stopband characteristics, and is relatively compact in size and relatively low in manufacturing cost.

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an 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 material may be based on physical characteristics of the material (including fluid accumulation on the material).

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 a power divider and electronic equipment, and relates to the technical field of communication. The power divider comprises an open-loop resonator and two filters, the two filters are arranged on the two sides of the open-loop resonator and are symmetrical about the center line of the open-loop resonator, and the two filters are respectively coupled with the open-loop resonator. The open-loop resonator is coupled with the input port, one filter is coupled with the first output port, the other filter is coupled with the second output port, and the output power of the first output port is equal to the output power of the second output port.