71 results about "Antenna matching" patented technology

The utility model provides an antenna matching circuit and a radio frequency circuit, and relates to the technical field of radio frequency circuits. In the antenna matching circuit, the output end of a signal generation circuit is connected with the input end of a link module, an antenna is respectively connected with the output end of the link module and a coupling circuit, and a control circuit is respectively connected with the coupling circuit and the signal generation circuit; after receiving the test instruction of the control circuit, the signal generation circuit sends a test signal to a transmitting link connected with the coupling circuit; the coupling circuit sends a reflection signal corresponding to the test signal to the control circuit; the control circuit is used for triggering and outputting a link opening instruction for instructing the link module to open a transmitting link to the link module after receiving the reflected signal; and the link module is used for opening a transmitting link corresponding to the link opening instruction. According to the embodiment of the invention, the bandwidth of the radio frequency circuit is effectively expanded, the radio frequency circuit can adapt to different antennas conveniently, and the compatibility of the radio frequency circuit is enhanced.

The disclosed system may include an antenna and an antenna matching network. The antenna matching network may include an aperture tuner configured to shift a frequency response of the antenna and an impedance tuner configured to dynamically change an amount of radiated power for the antenna. The antenna matching network may be positioned at least a specified minimum distance from the antenna according to various operating characteristics of the antenna. Various other apparatuses, wearable electronic devices, and methods of manufacturing are also disclosed.

Embodiments of the present application provide a radio frequency compensation control method, a communication device and a storage medium, by determining the current connection state of the main radio frequency circuit and the antenna matching circuit in the radio frequency circuit of the communication device, and then performing at least one of power compensation and matching compensation on the communication device according to the connection state, the effect of providing different power compensation and / or matching compensation for the communication device under different connection states of the radio frequency circuit is realized, so that the communication device can have different radio frequency transceiving performance under different connection states of the radio frequency circuit, which can better meet the needs of the current working state of the communication device, and is beneficial to improve the accuracy of the test result of the communication device and the user experience of the communication device.

The invention relates to the technical field of microwaves, in particular to a broadband antenna matching system based on a 4: 1 impedance conversion balun, which comprises the 4: 1 impedance conversion balun, an adjustable impedance matching network, a radio frequency monitoring unit and a logic control unit, the logic control unit is configured to receive forward power and reflection power signals and calculate to obtain a standing-wave ratio or a reflection coefficient under a current working frequency point; comparing the standing-wave ratio or the reflection coefficient with a preset threshold value; based on a comparison result, executing an adaptive matching algorithm, and iteratively generating and outputting a new digital control signal to drive a variable reactance element in the adjustable impedance matching network to change the value of the variable reactance element; and through closed-loop feedback control, the impedance of the adjustable impedance matching network is dynamically optimized. By modifying an algorithm parameter or a lookup table in the logic control unit, the same hardware platform can easily adapt to antennas with different impedance characteristics and different frequency bands. And the design flexibility and the product universality are greatly enhanced.

1. The name of the design product: frequency doubling module (BP-40). 2. The use of the design product: for antenna matching debugging, RF component testing and research and development. 3. The design points of the design product: in the shape and structure of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The present application provides a plasma processing device capable of controlling the position of a resonance point and bringing the resonance point close to the output end of a coil antenna. The device comprises an ICP antenna (21) having an input end (21I) and an output end (21O); a series circuit formed by connecting an additional inductor (24) and a variable capacitor (25) in series; and a control device (33) for changing the capacitance of the variable capacitor (25). The input end (21I) is connected to an antenna power source (23) via an antenna matching device (22), the output end (21O) is connected to the additional inductor (24), and the additional inductor (24) is connected to a ground end via the variable capacitor (25).

The application discloses an end-fire antenna, comprising an antenna board, at least two sub-antennas are arranged at the top end of the antenna board, a feed network layer is arranged at the bottom end of the antenna board, at least two feed columns are arranged in the antenna board, the feed columns correspond to the sub-antennas one by one, the feed columns penetrate through the antenna board and connect the sub-antennas and the feed network layer. The feed network layer transmits high-frequency current to the corresponding sub-antennas through the feed columns, matches the required amplitude and phase for the sub-antennas, and finally converts the high-frequency current into electromagnetic waves, forms strong directional end-radiation in space, and makes the end-fire antenna have good end-fire characteristics.

The invention provides a waveguide antenna. The waveguide antenna comprises a radiant panel provided with two antenna beam adjusting units, a plurality of antenna units, a substrate integrated waveguide structure and an antenna matching section, the two antenna beam adjusting units are symmetrically arranged about the symmetry axis, and the multiple antenna units are arranged between the two antenna beam adjusting units in a staggered mode; a first distance which is 1 / 4 waveguide wavelength of a central frequency point is formed between a first center line of the antenna beam adjusting unit and the symmetry axis; a second interval which is 1 / 4 waveguide wavelength of the central frequency point is formed between the second center lines of two adjacent antenna units; the substrate integrated waveguide structure is provided with a pair of first metal column groups, and a third distance is formed between third center lines of the pair of first metal column groups; different fourth distances are formed between the fourth center lines of the plurality of antenna units and the symmetry axis, and the fourth distances are within the range of 10%-20% of the third distances; the antenna matching section is a three-section matching section, and the physical width of the antenna matching section is one fourth of the waveguide wavelength of a center frequency point.

A method improves antenna matching for a wireless node, preferably of a sensor wireless node and / or actuator wireless node. A radio signal, or at least a portion thereof, is coupled out of the antenna and / or out of the transmit path of the wireless node. The impedance and / or the resonant frequency of the antenna is determined therefrom in the wireless node, and the impedance and / or the resonant frequency of the antenna is adjusted according to the determined impedance and / or resonant frequency by a circuit acting on the antenna.

The invention discloses an antenna matching method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the configuration data of a main control cell, and determining at least one controlled frequency band according to the configuration data; screening candidate cells in a first preset position range from the controlled cells corresponding to the at least one controlled frequency band by taking the master control cell as a center; dividing the candidate cells according to sites to obtain site division results, and determining the site closest to the master control cell in the site division results as a target site; determining a target cell sharing an antenna with the target station from the candidate cells based on the signal quality data of the adjacent cells; wherein the adjacent cells are all cells in a second preset position range of the main control cell; according to the invention, accurate matching of the master control cell and the target controlled cell in a multi-frequency antenna scene is realized, an antenna does not need to be newly added or replaced, hardware input cost in a matching process is reduced, and matching effectiveness is guaranteed through step-by-step screening and signal quality verification.

An eyeglasses device includes a frame, a first temple, a circuit board, and a flexible circuit board. The frame includes first and second metal parts and an insulating component connecting the first and second metal parts. Second metal part is insulated from first metal part by insulating component. At least part of appearance of the frame is formed by the first metal part and the second metal part together. The first temple is pivotally connected to the frame. The circuit board is disposed in the first temple. The flexible circuit board is disposed on the frame and the first temple and is electrically connected to the second metal part and the circuit board. The flexible circuit board includes an antenna matching circuit. The second metal part serves as an antenna, and the antenna with the antenna matching circuit is excited at a first frequency band and a second frequency band.

The invention discloses an antenna matching device (20) comprising an antenna matching circuit (26), a load (24) and a contact (34) for connecting an antenna (30). The antenna matching circuit (26) is used to match a transmission signal (28) to an antenna (30), wherein the antenna matching circuit (26) outputs a matched transmission signal (32). The load (24) attenuates the matched transmission signal (32) such that an attenuated transmission signal (35) is provided at the contact (34), wherein the load (24) is inductively coupled in between the antenna matching circuit (26) and the contact (34) for connecting the antenna (30).

This disclosure provides an intelligent system and its antenna gain enhancement device. The antenna gain enhancement device includes several metal components and an insulating housing. Each metal component comprises an insulating main body and a metal layer and an insulating layer sequentially arranged from the inside out on the outer surface of the main body. Several independent metal components are arranged within the housing in a predetermined manner. The antenna gain enhancement device is matched with the antenna in the intelligent system. The metal components are used to generate polarization under the influence of an applied electromagnetic field to improve antenna gain. In this disclosure, by designing the antenna gain enhancement device to include several metal components and an insulating housing, these metal components do not require assembly and are directly installed into the housing in an ordered or disordered manner. This achieves polarization under the influence of an applied electromagnetic field, forming an enhanced electric field in the direction of electromagnetic wave propagation, thereby enhancing antenna gain and enabling wider communication range, smoother network speeds, and lower signal latency.

The invention relates to a communication device (10) for a vehicle (2), comprising: a single communication antenna (11); a matching circuit (12) configured to match an impedance of the communication antenna (11); a high-frequency processing module (13) connected to the matching circuit (12) and configured to process a high-frequency signal received by the antenna (11); and a passive selection circuit (15) connected to the matching circuit (12) and configured to communicate with a near field communication module (14) receiving a signal via the antenna (11) so as to operate in an open state when the strength of the signal received by the antenna (11) is below a predetermined strength threshold and to operate in a closed state when the strength of said signal is above the predetermined strength threshold. A signal received by the antenna (11) is transmitted to the near field communication module (14) via the matching circuit (12).

The present application relates to a kind of pulse wireless ultra-wideband transmitter chip, including sequentially connected narrow pulse generator, voltage-controlled ring oscillator, output driver, power amplifier and off-chip matching network, wherein the narrow pulse generator is used to generate narrow pulse according to receiving signal;The voltage-controlled ring oscillator is switch operating mode oscillator, for providing frequency calibration when activated, output narrow pulse oscillation signal;The output driver is used to realize the isolation between the voltage-controlled ring oscillator and power amplifier, and sharpens narrow pulse oscillation signal;The power amplifier is used to amplify narrow pulse oscillation signal;The off-chip matching network is used to match the output signal of power amplifier with antenna.Compared with prior art, the present application has ultra-low power consumption, compact area, short distance and high energy efficiency application and other advantages.

The present application relates to an antenna, an antenna module and an intelligent terminal, wherein the antenna includes a radiator, a tuning unit and a switch unit, wherein the radiator is electrically connected to the reference ground of the intelligent terminal for receiving and transmitting antenna signals; the tuning unit is electrically connected to the radiator, the switch unit is electrically connected to the tuning unit, the tuning unit and the switch unit form an antenna matching network, and the radiator cooperates with the antenna matching network to receive and transmit antenna signals of different frequency bands. In the antenna of the present application, a switch unit and a tuning unit are arranged between the radiator and the radio frequency processing module. The processor controls the switch unit and the tuning unit to cooperate to form different antenna matching networks according to the frequency bands in which the antenna receives and transmits antenna signals, thereby enabling the antenna to receive and transmit antenna signals of more frequency bands, thereby broadening the bandwidth of the antenna.

The invention provides an intelligent terminal local antenna assembly capable of flexibly applying an antenna tuning switch, which comprises a high-frequency receiving antenna and an intermediate-frequency main transmitting antenna which are arranged on a metal frame of intelligent equipment, and is characterized in that the high-frequency receiving antenna is adjacent to the intermediate-frequency main transmitting antenna; the mainboard is provided with a first tuning switch matched with the high-frequency receiving antenna, the mainboard is provided with a second tuning switch matched with the intermediate-frequency main transmitting antenna, the high-frequency receiving antenna not only plays a role in high-frequency receiving, but also serves as a parasitic antenna of the intermediate-frequency main transmitting antenna, and the intermediate-frequency main transmitting antenna is connected with the high-frequency receiving antenna through the first tuning switch. The high-frequency receiving antenna forms different parasitic antenna lengths, the resonance position offset of the intermediate-frequency main transmitting antenna is influenced through the combined action of the first tuning switch and the second tuning switch, and the radiation performance of the intermediate-frequency main transmitting antenna is adjusted. The antenna assembly is very high in total radiation efficiency, and due to the reasonable antenna layout, the antennas do not interfere with one another during working.

The application relates to the technical field of antenna matching and tuning devices, in particular to a medium wave antenna matching assembly based on double helix inductors, which comprises a shell, a coil set arranged in the shell, a movable magnetic core rod, a lead screw, a variable capacitor, a mounting plate, a coarse tuning knob, a fine tuning knob, an antenna interface and a speed reducer; wherein an operation table is arranged on the shell, the coarse tuning knob and the fine tuning knob are arranged on the operation table; the coil set comprises a first double helix inductor, the magnetic core rod is arranged along the axial direction of the first double helix inductor and can axially move relative to the first double helix inductor; the lead screw is arranged in the shell and is in transmission connection with the magnetic core rod, the coarse tuning knob is in transmission connection with the lead screw so as to drive the magnetic core rod to perform coarse tuning; the variable capacitor is arranged on the mounting plate, the fine tuning knob is in transmission connection with the variable capacitor through the speed reducer so as to perform fine tuning on the variable capacitor; and the antenna interface is arranged on the shell and is electrically connected with the first double helix inductor and the variable capacitor to form an antenna matching network.

The utility model provides a wireless information receiving device based on radio frequency identification technique, including the casing, the casing is pasted with microstrip antenna, is provided with antenna matching spare outside microstrip antenna, the outside of antenna matching is provided with antenna housing, antenna matching spare makes antenna housing and casing conformal, is installed with the amplitude phase adjustment board who is connected with microstrip antenna in the casing, and amplitude phase adjustment board passes through radio frequency connector again and is transmitted to energy management board and signal processing board respectively with radio frequency signal. The utility model not only guarantees the integrity of the appearance of the projectile, and realizes reliable antenna performance.

An NFC antenna selector circuit switch includes an antenna matching circuit having first and second output nodes coupled to an antenna. A first transistor couples a first NFC signal input node to the matching circuit, and a second transistor couples a second NFC signal input node to the matching circuit. Controlling nodes of the first and second transistors are coupled together at a first node, where the first node is coupled to a first voltage rail via a first resistor. A third transistor couples the first node to ground. A first voltage is applied to the first voltage rail. The first voltage has absolute value greater than a maximum voltage present between first and second NFC signal input nodes plus a transistor threshold voltage.

This invention discloses a broadband SIW antenna matching method, belonging to the field of antenna technology. This method cascades a broadband impedance matching layer consisting of several matching stubs and a waveguide transmission line behind the SIW antenna. The reflection coefficients of the ports following the cascaded matching stubs and waveguide transmission line are calculated based on cascaded two-port network theory. Finally, a genetic algorithm is used to optimize the impedance matching within the target frequency band. This method performs broadband impedance matching optimization in just a few minutes, improving optimization efficiency.

The invention provides a dual-scene antenna matching method and a dual-scene antenna network phase shifter, and relates to the technical field of antenna simulation, and the dual-scene antenna matching method comprises the steps: building a simulation circuit diagram of a dual-scene antenna according to a preset application scene; in the simulation scene, matching a simulation circuit for the simulation circuit diagram in each application scene to obtain a scene simulation circuit diagram corresponding to the antenna mode in the application scene; and generating a phase shifter simulation schematic diagram containing the dual-scene antenna based on the scene simulation circuit diagram, wherein the phase shifter simulation schematic diagram is used for constructing the dual-scene antenna network phase shifter. According to the dual-scene antenna matching method and the dual-scene antenna network phase shifter provided by the invention, the simulation circuit can be matched for the simulation circuit diagram of each application scene, and the antenna mode in the application scene is met, so that the dual-scene antenna with relatively good matching degree can be obtained, and the application requirement of the dual-scene antenna is met.

1. The name of the design product: USB modular vector network analyzer (BN100+). 2. The use of the design product: for antenna matching debugging, RF component testing and research and development. 3. The design points of the design product: in the shape and structure of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The present invention relates to a transceiver multi-beam network and antenna based on an ultra-multi-layer mixed-pressure PCB process. The transceiver multi-beam network includes a microwave combining network layer, a dielectric substrate, and a multi-beam chip layer. The microwave combining network layer and the multi-beam chip layer are sequentially arranged on the dielectric substrate. Any of the microwave combining network layers and the multi-beam chip layer are connected via quasi-coaxial vertical vias. The microwave combining network layer is provided with capacitor and inductor branches around the connection with the quasi-coaxial vertical vias. Through the above-mentioned arrangement, the present invention supports multiple independent beams while effectively reducing the phased array profile, achieving high inter-channel isolation, reducing spatial crosstalk, and achieving good antenna matching.

This invention relates to a variable-direction dual-band composite antenna assembly, comprising a VHF / UHF band antenna, an S-band antenna, an RF duplexer, a radome, an SMA cable assembly, and a metal cavity. The RF duplexer is fitted and mounted within the metal cavity. One end of the VHF / UHF band antenna is connected to the VHF / UHF band port of the RF duplexer. The other end of the VHF / UHF band antenna is fixedly connected to the S-band antenna. The S-band antenna is connected to the S-band port of the RF duplexer via the SMA cable assembly. Both the VHF / UHF band antenna and the S-band antenna are covered by the radome. This invention features a simple and reasonable structural design, good performance, and achieves miniaturization, flexibility, ease of movement, high gain, and adjustable radiation direction.

The utility model provides a radio frequency circuit of an antenna matching circuit, which relates to the technical field of antenna matching and comprises a radio frequency module and a receiving module, the receiving module is connected with a matching module, and the radio frequency module is connected with an amplifying module. The matching module comprises a matching unit and a filtering unit. According to the utility model, in the use process of the matching unit and the filtering unit, the detection unit calculates real-time heat of capacitors or inductors in the matching unit and the filtering unit in real time through a formula and receives and processes the real-time heat, and then the power supply unit supplies power to the compensation unit; the self temperature characteristic of the compensation unit compensates the temperature change of the matching unit and the filtering unit, counteracts the capacitance or inductance parameter change caused by temperature rise, stabilizes the circuit performance, ensures that the antenna matching circuit keeps a good working state, guarantees the accuracy and stability of signal processing, and improves the reliability of the antenna matching circuit. Meanwhile, power supply to the compensation unit is automatically started and stopped by the control unit, and energy consumption is reduced.

The present invention relates to a wireless power charging system that structurally overcomes the limitation of a conventional antenna matching circuit so as to be capable of supplying wireless power to a smart contact lens at a wider radius and a longer distance. The wireless power charging system comprises: a first device including a first antenna and a transmission circuit that controls the first antenna; and a second device including a second antenna electromagnetically linked to the first antenna and a reception circuit linked to the second antenna, wherein: the first device and the second device include a healthcare device; and the first antenna included in the first device supplies wireless power to the second device through the second antenna included in the second device, and the second device may not include a battery for storing power.

1. The name of the design product: frequency doubling module (BP-50). 2. The use of the design product: for antenna matching debugging, RF component testing and research and development. 3. The design points of the design product: in the shape and structure of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention discloses an antenna assembly and electronic equipment, the antenna assembly comprises a first radiation branch knot, a second radiation branch knot and an antenna matching circuit, the first radiation branch knot is provided with a first coupling end, a first grounding end and a feeding point arranged between the first coupling end and the first grounding end, and the first grounding end is provided with a first grounding point for grounding; the second radiation branch knot is provided with a second coupling end and a second grounding end, the second coupling end and the first coupling end form a coupling gap, the second grounding end is provided with a second grounding point used for grounding, and the antenna matching circuit is electrically connected to the first radiation branch knot through the feeding point. The antenna matching circuit is used for enabling the first radiation branch knot to support a first frequency band, enabling the first radiation branch knot and the second radiation branch knot to support a second frequency band together and enabling the second radiation branch knot to support a third frequency band when current is fed in. According to the antenna assembly and the electronic equipment provided by the embodiment of the invention, the research and development cost and the production cost can be reduced, and the carrier aggregation performance of the antenna assembly is improved.

The utility model discloses a dual-channel signal circuit of a Beidou system. The dual-channel signal circuit comprises an antenna matching network, a power amplifier, a filter and a positioning chip processor, the antenna matching network is connected with a two-in-one external antenna, and the two-in-one external antenna is used for jointly accessing a B1 signal and a B2 signal to a radio frequency input end of the antenna matching network; the input end of the power amplifier is connected with an antenna matching network, and the power amplifier U2 is used for performing gain amplification on accessed B1 and B2 signals; the filter is connected with the power amplifier and is used for filtering the signals B1 and B2 after gain amplification respectively; the high-level output end of the filter is connected with the B1 matching network; and the low-level output end of the filter is connected with the B2 matching network. And the positioning chip processor is respectively connected with the B1 matching network and the B2 matching network and is used for accessing a B1 signal and a B2 signal. According to the utility model, the overall equipment cost of the circuit can be reduced while the requirement of dual-channel signal input is met.