35 results about "Rectenna" patented technology

The invention discloses a near-far field wireless energy collection system based on a circularly polarized rectification antenna, and relates to the technical field of rectification antennas and near-field wireless energy transmission, the near-far field wireless energy collection system comprises an annular far-field receiving antenna which is arranged on one surface of a dielectric substrate and is provided with an opening, and the other surface opposite to the dielectric substrate is provided with a metal grounding layer; an annular near-field receiving structure is arranged on the inner side of the far-field receiving antenna, one end of the far-field receiving antenna is connected with the near-field receiving structure through the matching branch, the far-field high-frequency rectifying circuit, the PMU module and the near-field rectifying network in sequence, the other end of the far-field receiving antenna is grounded, and the output end of the PMU module is connected with a load. The system has the advantages of high integration level, high efficiency and wide application scene.

A wireless charging system includes, in part, a first board, a multitude of rectenna boards, and a second board. The first board is adapted to receive a bottom portion of a rechargeable battery, and includes, in part, a ground plane, a first multitude of receptacles positioned along a perimeter of the first board, and circuitry adapted to convert a received RF signal to a DC voltage for delivery to the rechargeable battery. Each rectenna board is associated with and adapted to be inserted into a different one of the first multitude of receptacles. Each rectenna board includes, in part, a multitude of receive antennas for receiving the RF signal. The rectenna boards are adapted to enclose the rechargeable battery when the rechargeable battery is positioned over the first board. The second board is adapted to engage with the rectenna boards to cover a top portion of the rechargeable battery.

The invention discloses a receiving antenna, a wearable rectification antenna and wearable equipment, and relates to the technical field of antennae, the receiving antenna comprises a flexible substrate, a metal floor and a radiation structure; the metal floor is arranged on the first side surface of the flexible substrate; the radiation structure is arranged on the second side surface of the flexible substrate, the radiation structure comprises two radiation floors and a feed transmission line arranged between the two radiation floors, the two radiation floors are oppositely arranged in a spaced mode, and each radiation floor is provided with a first radiation gap and a second radiation gap communicated with the first radiation gap; the two first radiation slots and the two second radiation slots are oppositely arranged, and the second radiation slots are configured to couple radio frequency energy transmitted by the feed transmission line to the first radiation slots so as to excite the first radiation slots to generate radiation; according to the invention, the influence of a human body on the performance of the receiving antenna can be reduced, electromagnetic radiation on the human body is reduced, the stability and efficiency of energy transmission are improved, and both flexibility and low loss are considered.

The application discloses a high-efficiency omnidirectional rectenna based on a class-F harmonic suppression structure and belongs to the rectenna field, comprising: a plurality of rectenna units which are arranged at equal intervals and rotate around the same center and are used for receiving radio frequency energy; the rectenna unit comprises a receiving antenna and a rectifier circuit; the receiving antenna comprises an antenna radiation structure, a metal floor and a feed microstrip line; a U-shaped groove is arranged on a region of the antenna radiation structure which is close to the metal floor, and a rectangular groove is arranged in the U-shaped groove; the U-shaped groove and the rectangular groove are used for suppressing the radiation of the second harmonic and the third harmonic; the rectifier circuit is arranged on the upper surface of a PCB and is used for rectifying the output signal of the antenna radiation structure by the microstrip line and electronic components; and the plurality of rectenna units are connected through a direct current synthesis network, so that the size of the rectenna can be reduced and the efficiency of the rectenna can be improved.

To improve the amplification and efficiency of an antenna contained within a rectenna. Antenna device comprising: a first conductor having a loop shape; a rectifier circuit connected to the first conductor; and a second conductor having a plate shape, comprising a main area extending in one direction substantially orthogonal to a loop area of ​​the first conductor, and an outer edge portion of the main area, wherein the first conductor has a loop whose length in relation to a wavelength at a receiving frequency is greater than 0.15, and the second conductor has the outer edge portion whose minimum length in relation to the length of the loop of the first conductor is greater than 0.4.

A wireless power rectifying system includes, in part, a multitude of boards. Each board includes an array of antenna elements and an array of rectifying circuits each associated with a different one of the array of antenna elements. Each rectifying circuit is adapted to convert an RF signal received by the associated antenna element array to DC voltage. The spacing between each pair of adjacent boards is in a range defined by λ / 20 to λ / 2, where λ is the wavelength of the received RF signal.

The invention discloses a micropower-oriented high-efficiency dual-frequency omnidirectional circularly polarized radio frequency rectification antenna. The antenna comprises a receiving antenna unit and a dual-frequency rectification circuit unit which are connected with each other. The receiving antenna adopts a dual-frequency omnidirectional circular polarization design; the double-frequency rectification circuit comprises a diode branch and a load branch which are connected in parallel. The diode branch comprises a coupling microstrip line, a pilot frequency impedance conversion network and a dual-frequency harmonic suppression structure which are connected in sequence; the load branch is formed by connecting a straight-through filter with a load in series. The double-frequency harmonic suppression structure forms a band-stop characteristic at the secondary harmonic of the double working frequency points; the pilot frequency impedance conversion network realizes a double-frequency-point same-input impedance characteristic; the coupling microstrip line enhances the voltage amplitude of the diode so as to improve the rectification efficiency of the circuit under the condition of micro input power. The antenna has good omnidirectivity and circular polarization performance, and can collect dual-frequency, multi-direction and multi-polarization electromagnetic waves; and meanwhile, the rectifier has the advantages of high rectification efficiency, small size and compact structure under a micro-input power condition, and better meets the requirement of collecting weak radio frequency energy in an actual scene.

An augmented logarithmic spiral antenna structure includes a first conductive layer, a dielectric layer and a second conductive layer. The first conductive layer includes a first spiral arm and a plurality of second spiral arms. The first spiral arm includes a first initial radius. The second spiral arms are disposed around and connected to the first spiral arm, and each of the second spiral arms includes a second initial radius. The dielectric layer has a top surface and a bottom surface, and the top surface is connected to the first conductive layer. The second conductive layer is connected to the bottom surface. A plurality of the second initial radii of the second spiral arms are different from each other, and different from the first initial radius.

This receiver includes an antenna, a rectifier circuit, and a processing circuit. The antenna has an annular shape, and includes a substrate and a conductor having a predetermined width. The rectifier circuit is installed on the substrate and rectifies a power supply signal received by the antenna. The processing circuit is installed on the substrate and executes processing for transmitting a data signal via the antenna.

This prevents and suppresses radio interference, enabling accurate measurement of heart rate and other parameters using radar. [Solution] When measuring vital signs including the heart rate of a person P by irradiating them with radio waves, the system includes an antenna 2 that can be placed on the surrounding objects, including the bed B on which the person P is lying down, and which receives the irradiated radio waves; a rectifier circuit 3 that forms a rectenna with the antenna 2 and converts the radio waves received by the antenna 2 into electrical energy; and a secondary battery 4 that stores the electrical energy converted by the rectifier circuit 3.

The application discloses a kind of circular polarization Ka wave band broadband rectenna based on dielectric resonator, it is related to electronic circuit technical field, including dielectric substrate, dielectric resonator being arranged above dielectric substrate and ground plate being arranged below dielectric substrate, and rectifier circuit;The edge of the long side of the dielectric substrate is equipped with a plurality of metal through holes that penetrate the dielectric substrate, and the plurality of through holes form a substrate integrated waveguide structure, a planar transmission microstrip line, a first gradual microstrip line and an SIW upper metal layer connected in sequence are printed on the dielectric substrate, a rectangular slot is formed in the middle of the SIW upper metal layer, and a third gradual microstrip line, a second gradual microstrip line and a radiation patch connected in sequence are arranged in the rectangular slot;One end of the planar transmission microstrip line is connected to the rectifier circuit.The application has the advantages of simple structure, wide impedance bandwidth, stable gain, small size, and realizes circular polarization and operation in the millimeter wave band.

Disclosed is a diode device (1) including an insulator (7) extending between and in contact with two metal terminals (3, 5), wherein the insulator comprises at least one epsilon-near-zero (ENZ) material, or comprises at least one epsilon-negative (ENG) material (7A) and a second insulator material (7B) forming a double insulator structure, and an electron source layer (9), particularly of graphene, between a metal terminal and the ENZ or ENG material. The insulator provides a reduced effective capacitance which permits rectifying diode operation at THz, infrared or visible frequencies, particularly for a solar radiation rectenna.

The invention discloses a rectification antenna and array suitable for long-distance microwave energy transmission. The rectification antenna comprises four rectification antenna units, a power synthesis network and a DC load. The four rectification antenna units are the same in structure, each rectification antenna unit comprises a rectifier chip and an antipode linear tapered slot antenna which are connected, the antipode linear tapered slot antenna is used for receiving microwave energy from a free space and inputting the microwave energy to the rectifier chip, and the rectifier chip is used for converting the microwave energy into a direct current signal; the four rectification antenna units are connected with a direct current load through a power synthesis network to supply power to the direct current load; the power synthesis network is used for adjusting the series-parallel connection relation of the four rectification antenna units so as to adjust the output voltage and current for supplying power to the direct current load. Through an innovative PCB antenna-CMOS chip cascade and array scheme, the contradiction between efficiency and scale in long-distance transmission is solved, and the effects of low cost and high integration are achieved.

This invention employs a novel method of phase calibrating a very large distributed antenna. The calibration technique makes possible a new, and more practical, architecture for Solar Power Satellites. Most previous solar power satellite concepts involve the construction of unified multi-kilometer sized structures. With this invention, rather than a large unified structure, the invention may employ a collection of small free flying satellites distributed over a volume several kilometers in diameter. The invention shows how to coherently phase conjugate a microwave signal transmitted from the ground up to the constellation of satellites so that the amplified return transmission is concentrated in a desired way within a highly restricted area on the ground. The invention solves the problem of achieving the required phase precision in the return microwave beam. The invention also provides a new way to more uniformly distribute the microwave beam over a large ground based rectenna.

The invention discloses an ultra-wideband high-efficiency monopole rectification antenna and a wideband impedance matching processing method. The impedance of a broadband rectification antenna is easily influenced by frequency change, so that a broadband impedance accurate matching mode is difficult to realize; an upper radiation patch and a lower radiation patch are respectively arranged on the upper end surface and the lower end surface of a dielectric substrate; the main sheet body is attached to the dielectric substrate, the first narrow composition sheet, the second narrow composition sheet and the third narrow composition sheet are sequentially attached to the dielectric substrate in the length direction of the dielectric substrate, the main sheet body is provided with a hollow part, one end of the lower radiation patch is a notch end with a notch, and the notch end of the lower radiation patch is arranged close to the main sheet body; the broadband impedance matching processing method comprises the steps of calculating and determining broadband impedance corresponding to a target frequency band according to a target value, and calculating according to the broadband impedance to obtain the size determination process of a first narrow composition sheet, a second narrow composition sheet and a third narrow composition sheet in the ultra-wideband high-efficiency monopole rectification antenna.

The application discloses a receiving antenna, a wearable rectifying antenna and a wearable device, and relates to the technical field of antennas.The receiving antenna comprises a flexible substrate, a metal floor and a radiation structure.The metal floor is arranged on the first side surface of the flexible substrate.The radiation structure is arranged on the second side surface of the flexible substrate.The radiation structure comprises two radiation floors and a feed transmission line arranged between the two radiation floors.The two radiation floors are oppositely and spacedly arranged.The radiation floor is provided with a first radiation slot and a second radiation slot in communication with the first radiation slot.The two first radiation slots and the two second radiation slots are oppositely arranged.The second radiation slot is configured to couple the radio frequency energy transmitted by the feed transmission line to the first radiation slot so as to excite the first radiation slot to generate radiation.The application can reduce the influence of the human body on the performance of the receiving antenna, reduce the electromagnetic radiation to the human body, improve the stability and efficiency of energy transmission, and simultaneously consider flexibility and low loss.

A rectenna device is provided which is capable of achieving high rectification efficiency over a wide range of input power intensity. A rectenna device comprises: two or more antenna elements; a first rectifier circuit provided for each of the antenna elements, which rectifies one output of the antenna element; and a second rectifier circuit, which can combine and input the outputs of the two or more antenna elements and rectify the combined output. A control is implemented to change the number of antenna elements connected to each of the first and second rectifier circuits.

The invention relates to the technical field of radio frequency energy collection, solves the problem that the output voltage and the conversion efficiency are limited due to the fact that a rectification antenna in the prior art is single in working frequency band, narrow in bandwidth and incapable of receiving circularly polarized waves, and discloses a wide-frequency-band circularly polarized rectification antenna which comprises an antenna body used for collecting radio frequency energy in the environment, the antenna comprises a substrate, a dielectric resonator and a rectifying circuit, the dielectric resonator and the rectifying circuit are arranged on the substrate, the rectifying circuit is used for converting radio frequency energy collected by the antenna into direct current energy to supply power to a load L2, and the rectifying circuit comprises a matching circuit. The rectifying antenna is simple in structure and high in average efficiency and has a circular polarization characteristic in an application frequency band, and the rectifying circuit is also simple in structure, is based on a single rectifying diode structure and completely covers UMTS-2100, Wi-Fi and LTE-2600 frequency bands.

The utility model relates to a microwave rectification antenna comprising an integrated antenna-rectification unit, a reconfigurable frequency selection module, a heat radiation layer and a protection cover. The integrated antenna-rectification unit comprises an antenna radiation layer and a rectification module which are fixedly connected; the antenna radiation layer is a butterfly-shaped metal patch, and the center of the butterfly-shaped metal patch is provided with a feeding point. The rectification module comprises a dielectric substrate and a grounding layer which are arranged in sequence; the grounding layer is connected with the antenna radiation layer through a metalized via hole array, and a plurality of via holes are annularly distributed at the edge of the antenna radiation layer. The microwave rectification antenna is ingenious in design, the antenna and the rectification unit are integrated together, better impedance matching can be achieved, energy loss caused by separation type design is reduced, and therefore the conversion efficiency is improved, and the size is small and exquisite.

The invention relates to the technical field of robot automatic following and positioning, and discloses a UWB single-chip robot automatic following system based on AOA positioning, which comprises a passive UWB tag, a robot UWB base station and a cooperative positioning network formed by wireless links of the passive UWB tag and the robot UWB base station, the passive UWB tag is integrated with a rectification antenna, a micro-power-consumption controller and a backscattering modulator and is not provided with a battery. The rectification antenna receives the UWB radio frequency energy and converts the UWB radio frequency energy into direct current According to the AOA positioning-based UWB single-chip robot automatic following system, battery-free endurance is realized through passive UWB label design, the positioning precision of a complex environment is improved by fusing an AOA and TDoA hybrid positioning algorithm, the problem of multi-target conflict is solved by adopting a time division and space division multiplexing hybrid multiple access protocol, the endurance constraint of an active label is thoroughly eliminated, and the positioning precision of the robot is improved. The method can also stably work in a non-line-of-sight scene, supports simultaneous following of multiple targets, remarkably reduces the maintenance cost, and improves the positioning stability and scene adaptability.

The invention discloses an omni-directional dual-polarization broadband rectification antenna applied to a radio frequency energy collection system. The omni-directional dual-polarization broadband rectification antenna comprises a receiving antenna and a rectification circuit. The receiving antenna is composed of a horizontal polarization omnidirectional antenna subunit and a vertical polarization omnidirectional antenna subunit, and dual-polarization receiving is achieved. The rectification circuit comprises a broadband matching network, a double-branch parallel rectification structure and a filter circuit, and is used for efficiently converting radio frequency energy into direct current energy. And the two are connected through an SMA connector, so that environment radio frequency energy is collected in a broadband.

The invention relates to a rectifying antenna, comprising: an antenna; and a diode of the Metal-Insulator-Graphene (MIG) type, electrically coupled to the antenna, comprising a metal portion and a conductive portion made of graphene, between which at least one insulating portion is located. The metal portion, the insulating portion(s) and the conductive graphene portion form a vertical stack of thin layer portions. In addition, the antenna is formed of a continuous thin graphene layer, part of which forms the conductive graphene portion of the diode.

A semiconductor device has a substrate and a first electrical interconnect structure formed over a first surface of the substrate. A second electrical interconnect structure is formed over a second surface of the substrate. An electrical component is disposed over the first surface of the substrate or over the second surface of the substrate. A first antenna is formed over the first electrical interconnect structure. A second antenna is formed over the second electrical interconnect structure. The first electrical interconnect structure has an insulating material formed over the first surface of the substrate, and a conductive via formed through the insulating material. Alternatively, the first electrical interconnect structure has an insulating layer formed over the first surface of the substrate, a conductive layer formed over the insulating layer, and a conductive via formed through the insulating layer and conductive layer.

To provide a long-distance wireless power transmission system for efficiently transmitting power by using an electromagnetic beam.SOLUTION: The system 100 includes a delivery antenna 110 that receives power from a power source, converts the input power into electromagnetic energy, and radiates the electromagnetic energy into free space as a directional beam that is a collimated or substantially collimated beam. The rectifying antenna 130 is positioned or configured to be positioned at a distance from the delivery antenna 110. The rectifying antenna 130 is configured to receive the directional beam and convert the electromagnetic energy into electricity. The system 100 utilizes one or more phase correction apparatuses 120, 122 to maintain the directional beam as a collimated beam and to increase the extent to which the directional beam is maintained as a collimated or substantially collimated beam.SELECTED DRAWING: Figure 1

Device, systems, techniques, and methods for mm-wave energy harvesting utilizing a Rotman-Lens-based rectenna system. An energy harvester system can include one or more antenna, a Rotman Lens having a beam port side and an antenna side in electrical communication with the one or more antenna, and a rectifier network in electrical communication with the beam port side of the Rotman Lens. The energy harvester system can also include a power combining network in electrical communication with the rectifier network and having an output. The rectifier network can include a plurality of rectifiers connected to the beam port side of the Rotman Lens. Further, each of the plurality of rectifiers can include a rectifying diode. The power combining network can include a plurality of bypass diodes.

The application relates to a self-adjusting bandwidth microstrip Yagi rectifier antenna and application, and belongs to the field of Internet of Things sensors. The application can be applied to Internet of Things sensors, and comprises a microstrip Yagi antenna and a rectifier. The microstrip Yagi antenna comprises a first substrate, an active oscillator, a reflector and a directive antenna. The rectifier comprises a microstrip line and an impedance changer. The application realizes self-power supply and saves electric energy. Meanwhile, the combination of a resistance voltage dividing circuit and a MOS tube is used. The combination of the DC voltage voltage dividing by the resistance voltage dividing circuit and the MOS tube controls the opening and closing of the directive antenna, various opening and closing combinations are formed, the bandwidth size is adjusted, and the problems that a traditional sensor needs active power supply and the communication bandwidth is narrow and unadjustable are solved.

A Duo Aloe Vera Cruces Concentricis antenna structure is provided and includes a first conductive layer, a dielectric layer and a second conductive layer. The first metal units of the first conductive layer form a first tapered hole. The second metal units of the first conductive layer are located in the first tapered hole and form a second tapered hole. The third units and the fourth units of the dielectric layer are aligned with the first metal units and the second metal units, respectively. The second conductive layer is connected to the dielectric layer. The first tapered hole has at least one first center line. The second tapered hole has at least one second center line. An included angle between the at least one first center line and the at least one second center line is 45 degrees.

The invention discloses a differential high-gain wide-load rectification antenna applied to a wireless energy transmission system, and relates to the technical field of microwave rectification antennae, and the antenna is composed of a differential high-gain receiving antenna and a wide-load rectification circuit. The receiving antenna is of a three-metal-layer and two-dielectric-layer structure, and differential feed is achieved through a T-shaped power divider. The rectification circuit adopts parallel high and low load rectification networks, respectively uses diodes with different powers, and is integrated with a matching and filtering network. According to the invention, high-gain receiving is realized, high rectification efficiency is maintained in a wide load range, and the performance of a wireless energy transmission system is improved.

The invention discloses a circularly polarized high-efficiency rectifying antenna with F-class operating characteristics, which comprises a first dielectric substrate, a second dielectric substrate, a first surface structure positioned on the upper surface of the first dielectric substrate, a second surface structure positioned on the upper surface of the second dielectric substrate, and a third surface structure positioned on the lower surface of the second dielectric substrate, wherein the first surface structure comprises two L-shaped groove structures for realizing circular polarization radiation; a second surface structure including a split annular groove structure for controlling third harmonics and manipulating phases of the third harmonics; and the third surface structure comprises a feed network, a rectifier and a direct current filter which are used for being matched with the split annular groove to suppress second harmonics and regulate and control the impedance function of the second harmonics. By using the invention, the power loss and the insertion loss can be reduced, and the conversion efficiency is improved. The method can be widely applied to the field of wireless communication.

A wireless power rectifying system includes, in part, a multitude of boards. Each board includes an array of antenna elements and an array of rectifying circuits each associated with a different one of the array of antenna elements. Each rectifying circuit is adapted to convert an RF signal received by the associated antenna element array to DC voltage. The spacing between each pair of adjacent boards is in a range defined by λ / 20 to λ / 2, where λ is the wavelength of the received RF signal.