83 results about "Antenna isolation" patented technology

Techniques are provided for improving antenna isolation and angle-of-arrival (AoA) performance of an antenna array. An example antenna array includes a plurality of patch antenna elements disposed on a planar substrate, and one or more resonator elements disposed on the planar substrate and between each of the plurality of patch antenna elements, wherein each of the one or more resonator elements includes a first repeating S-shaped conductor in a first orientation, and a second repeating S-shaped conductor in a second orientation that is rotated 180 degrees relative to the first orientation.

The invention discloses a dual-polarization radar multi-parameter fusion rainfall estimation system and method, and relates to the technical field of meteorological radars, and the system comprises a data collection module which is used for starting a dual-polarization radar to carry out long-term observation when an observation scene with uniformly distributed light rain weather appears, recording radar polarization parameters at different elevation angles, and carrying out the data collection module; transmitting to the deviation analysis module; the deviation analysis module is used for receiving the radar polarization parameters and calculating ZDR statistical characteristics according to the reference uniform scene; according to the invention, by constructing the antenna isolation elevation angle dependence model, dynamic reverse correction is carried out on ZDR and rhohv measurement values under different elevation angles, the influence of dynamic degradation of the antenna cross polarization isolation along with the scanning elevation angle on the measurement values is effectively eliminated, and real-time sensing and compensation of the isolation degradation along with the dynamic change of the elevation angle are realized; the radar can keep high measurement precision in the whole scanning space, and the conditions of precipitation phase state misjudgment and missing report are reduced, so that the accuracy of precipitation estimation is improved.

The utility model relates to the technical field of antenna isolation, in particular to an antenna module and electronic equipment, the antenna module comprises a first part, a second part, an antenna assembly, a first radiator, a first branch knot, a switching part and a second branch knot, and the first part and the second part can be folded and unfolded. The antenna assembly, the first radiator and the first branch knot are respectively connected with the first part. The antenna assembly and the first radiator are respectively arranged on two opposite sides of the first part. The first branch knot is located at one end of the first radiator and is separated from the first radiator. The switching part is used for being electrically connected with the first branch knot so that the working mode of the first branch knot can be changed. And the second branch knot is connected with the second part. According to the invention, the isolation between different antennas can be improved.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, based at least in part on antenna isolation information for the UE, a pair of antennas from among at least three antennas available for transmission on the UE. The UE may transmit a communication using the pair of antennas. Numerous other aspects are described.

An apparatus can include a substrate, a first antenna panel, a second antenna panel and a wall isolator. The first antenna panel can be coupled on the substrate and comprising an array of first antenna elements. The second antenna panel can be coupled on the substrate comprising an array of second antenna elements. The wall isolator can be coupled on the substrate. The wall isolator can include a first EBG element and a second EBG element. The first EBG element can be positioned along an edge of the first antenna panel for a length of the substrate and configured to reduce surface wave propagation from the array of first antenna elements. The second EBG element can be positioned along an edge of the second antenna panel for a length of the substrate and configured to reduce surface wave propagation from the array of second antenna elements.

The utility model provides a tracker, and relates to the technical field of communication equipment. The tracker comprises a cellular communication module, a communication identification chip, a positioning module, a radio frequency antenna and a radio frequency switch. An identity recognition interface of the cellular communication module is connected with a data interface of the communication recognition chip, a first input / output interface of the cellular communication module is connected with a logic control interface of the radio frequency switch, and an antenna interface of the radio frequency switch is connected with a contact of the radio frequency antenna; a first radio frequency interface of the radio frequency switch is connected with a radio frequency interface of the cellular communication module, a second radio frequency interface of the radio frequency switch is connected with a radio frequency receiving interface of the positioning module, and a data transceiving interface of the positioning module is connected with a position data transceiving interface of the cellular communication module. According to the tracker, a communication function and a positioning function can be realized only by using one antenna, and the problems of low positioning accuracy, high power consumption and the like caused by poor isolation of double antennas in an existing tracker are solved.

The application relates to an antenna assembly and an electronic device, wherein the antenna assembly comprises a main body part and a feeding assembly, the main body part is provided with a first slot antenna and a second slot antenna and an isolation structure, a first feeding part and a second feeding part are arranged in the first slot antenna and the second slot antenna respectively, the isolation structure can comprise a first isolation slot perpendicular to the slot antenna and / or a second isolation slot parallel to the slot antenna, the first isolation slot is used for adjusting a differential mode signal impedance, the second isolation slot is used for adjusting a common mode signal impedance, the overall isolation degree of the antenna assembly is improved by adjusting the differential mode signal impedance and / or the common mode signal impedance, so that the signal quality of the antenna is improved, the possibility of mutual interference between different signals is reduced, and the actual use requirement is met.

The invention relates to the technical field of wireless communication, and provides an antenna system and electronic equipment, the antenna system comprises a first antenna and a second antenna, each of the first antenna and the second antenna comprises a first frequency band, the center frequency of the first antenna when working in the first frequency band deviates towards a first direction, and / or the center frequency of the second antenna when working in the second frequency band. And when the second antenna works in the second frequency band, the center frequency deviates towards the second direction. According to the embodiment of the invention, the center frequency of the first antenna and the center frequency of the second antenna are adjusted, so that the center frequency of the first frequency band generates frequency offset, the coupling influence between the two antennas is relieved, and the antenna isolation is improved.

The present application provides a decoupling structure and antenna array, wherein the decoupling structure is arranged between at least two adjacent antenna units in a MIMO array, and includes: at least two decoupling components, and a conductor connecting component connecting at least two decoupling components, wherein the decoupling component is used to electrically couple with the electromagnetic waves emitted by the adjacent antenna units to generate an induced current. Thus, the decoupling structure can generate dual-polarized electric field components based on the induced current, and act on the two polarizations of the coupled antenna respectively to offset the coupling and improve antenna isolation. At the same time, the decoupling structure has good compactness and independence, and can be implemented on a large scale.

The utility model discloses a kind of high-isolation miniaturization double-sided panel circular antenna and application.It is through the mode of adjusting feedback short line length and position and adjusting the shape of antenna vibrator, in addition, the length of transmission feed line is also limited, finally realize improved antenna isolation, improve low-power Doppler effect radar sensor performance, applicable to low-cost double-sided panel radar module, can be used in low-cost radar, RFID transceiver and multiple scenes such as RFIDs transceiver.Effective as compared with prior art: while providing small size, improve the isolation of antenna, greatly reduce the noise of radar module, and sensing distance is greatly improved.The utility model solves the problem that 1mA low-power radar module is applied to globe lamp, and greatly reduces production cost, with very high commercial value.

The invention provides a shell assembly and a foldable terminal. The shell assembly is applied to the foldable terminal, the foldable terminal has an unfolded state and a folded state, the foldable terminal comprises a plurality of folding parts which are sequentially and rotationally connected through a rotating shaft, at least one folding part is provided with the shell assembly, and at least part of the shell assembly is a coupling medium. The coupling medium is used for being electromagnetically coupled with the other folding part and / or the rotating shaft which are oppositely arranged in a folding state, and the coupling medium is electrically connected with the grounding structure of the folding part; the shell assembly is provided with a first edge part, a second edge part and a third edge part which are connected in sequence, the first edge part and the third edge part are located on the same side of the second edge part, and the coupling medium is provided with a first part located on the first edge part, a second part located on the second edge part and a third part located on the third edge part. According to the shell assembly and the foldable terminal provided by the embodiment of the invention, the risk that the antenna isolation becomes poor can be reduced.

An antenna system, an antenna isolation adjustment method, and an air interface cancellation structure may be applied to a full-duplex communication system to implement air interface cancellation of an environment interference path. The system includes a first antenna array, a second antenna array, N air interface cancellation structures, and a feedback circuit. The N air interface cancellation structures perform phase adjustment or both phase adjustment and amplitude adjustment on a communication signal between the first antenna array and the second antenna array based on signal information of the communication signal and signal information of a received hybrid signal that are obtained by the feedback circuit, to adjust isolation between a first radio frequency port set of the first antenna array and a second radio frequency port set of the second antenna array.

A method and system for suppressing leakage signal of continuous wave SAR by using secondary sampling, according to the characteristics that the leakage signal is strongly superimposed on the weak echo signal in the SAR system, after the first digital sampling of the SAR echo signal, secondary sampling is performed after the original signal cancellation (suppression of leakage signal) of the digital-to-analog conversion, and finally the effective echo data is obtained. The method can suppress the leakage signal without improving the antenna isolation, and can lay the foundation for the application of continuous wave SAR on satellite platform.

The invention discloses a double-frequency high-isolation compact Beidou third-generation satellite receiving and transmitting integrated antenna, relates to the technical field of satellite communication, and solves the technical problem that the isolation degree of two antennas with similar frequency bands in a limited size is relatively poor. The antenna comprises a first antenna, a second antenna and a feed circuit board which are sequentially stacked from top to bottom, the feed circuit board comprises a three-branch strip line coupler, and the three-branch strip line coupler comprises a main coupling line and an auxiliary coupling line which are symmetrically arranged. A first branch line, a second branch line and a third branch line are connected between the main coupling line and the auxiliary coupling line, the left end and the right end of the main coupling line are a first port and a third port respectively, and the left end and the right end of the auxiliary coupling line are a second port and a fourth port respectively; according to the invention, the receiving and transmitting integrated antenna and the feed network are designed in a targeted manner, the BDS L frequency band and the BDS B1 radiation patch can be stacked, and the miniaturization design of the antenna is realized under the condition that the antenna performance is not influenced.

The present invention relates to the technical field of radar target simulators, and provides a ghost elimination device for a vehicle radar target simulator and a working method thereof, comprising an adjustment circuit arranged between an internal circuit of the vehicle radar target simulator and a transceiver antenna; the adjustment circuit is used to simulate the crosstalk or mismatched reflection signal of the transceiver antenna of the radar target simulator. The problem that the target simulation signal has "ghost" false target information due to insufficient isolation of the transceiver antenna of the radar target simulator or port mismatch, which affects the performance test of the vehicle radar, is solved.

The invention provides a folding screen terminal, and relates to the technical field of electronic equipment. The problems that when the folding screen terminal is in a folded state, an extra coupling path is generated, so that the antenna isolation becomes poor, and the antenna performance is affected are solved. The folding screen terminal comprises a middle frame, a rotating shaft mechanism, a decorative cover and an electric connecting piece. The number of the middle frames is multiple, and every two adjacent middle frames are rotationally connected through a rotating shaft mechanism. Decorative covers are arranged on at least part of the middle frame, and at least one decorative cover comprises a metal body. The electric connecting piece is arranged in the middle frame corresponding to the metal body, one end of the electric connecting piece abuts against the metal body, and the other end of the electric connecting piece is electrically connected with the grounding end of the folding screen terminal.

The present disclosure provides an antenna system, comprising: an antenna floor (22); an antenna cover (21) covering the antenna floor; a transmitting antenna assembly (25) and a receiving antenna assembly (26) mounted on the antenna floor and located in an accommodating space (35) surrounded by the antenna cover and the antenna floor; an adjustable absorbing structure (33) disposed in the accommodating space and arranged close to the antenna cover; and an absorbing adjustment circuit (36) electrically connected to the adjustable absorbing structure for adjusting the absorbing characteristics of the adjustable absorbing structure for electromagnetic waves. The present disclosure further provides a method for adaptively adjusting antenna isolation, a base station, and an antenna isolation method.

The application relates to the technical field of antenna isolation test, and discloses an intelligent test method and system for multi-port antenna isolation performance, which comprises the following steps: sequentially testing the transmission coefficients of each group of to-be-tested ports of a measured antenna by using a network analyzer, and constructing an S parameter matrix; any group of to-be-tested ports comprises an excitation port and a response port, and the transmission coefficient is the ratio of the power of a scattering wave received by the response port to the power of an incident wave input by the excitation port; based on the S parameter matrix, the isolation of each group of to-be-tested ports at each frequency within the working frequency band of the measured antenna is calculated; the worst isolation of all groups of to-be-tested ports within the working frequency band is identified, and the worst isolation is marked as the isolation of the measured antenna. The application effectively avoids measurement errors and accidental interference, and improves the accuracy and reliability of the isolation test.

The invention relates to a metal shell, in particular to the technical field of communication equipment, and at least one groove body is reserved in the side wall and / or the bottom surface of the metal shell; the metal shell is subjected to anodic oxidation treatment to form a porous layer; an antenna isolating bar is embedded in the groove body in a curing manner; the antenna isolating bar is formed by filling and curing glue at normal temperature; and the glue is cured and bonded with the porous layer when being cured and formed. According to the metal shell provided by the invention, the antenna isolating bar obtained by forming has good use performance, and the formed material has relatively high signal transmission performance, namely, the shielding effect on signals is remarkably reduced, the interface bonding force of the material and the metal middle frame is improved, and the defects of easy cracking, acid spitting, white line generation and the like in the subsequent anode process are avoided.

The invention discloses a low-speed speed measurement method for a sine frequency modulation Doppler radar, and mainly solves the problems that the existing debugging test is complicated, and the speed measurement cannot be carried out due to easy lock losing during low-speed flight. The implementation scheme comprises the following steps: determining side frequency times, a modulation index and a modulation frequency; a DDS is used for digitally synthesizing a sine frequency modulation signal, the sine frequency modulation signal is mixed with a local oscillator signal generated by a PLL to generate a radio frequency sine frequency modulation signal, and the radio frequency sine frequency modulation signal is transmitted to specific four directions in turn according to a period; performing phase shifting and frequency mixing on a coupling signal of the echo signal and the transmitting signal, performing down-conversion to a base band, and performing band-pass filtering to obtain a side frequency component containing a Doppler frequency spectrum; carrying out IQ demodulation on the side frequency component and IQ two-path coherent reference signals thereof to obtain an IQ signal of a Doppler spectrum; and calculating the IQ signal of the Doppler frequency to obtain the speed information of the aerial carrier. The method greatly reduces the isolation index requirement of the receiving / transmitting antenna of the Doppler radar, improves the speed measurement capability of the Doppler radar during low-altitude low-speed flight, and can be used for airborne Doppler radars.

The embodiment of the utility model provides an antenna isolator of FTTR terminal equipment and a WIFI module, and relates to the technical field of optical fiber communication. Wherein the antenna isolator of the FTTR terminal equipment is arranged between two adjacent groups of antennas, and comprises at least one grounding path; one end of the extension path is connected with the grounding path, and the other end of the extension path is not grounded; and the impedance element is arranged on the extension path. According to one embodiment of the utility model, the problem of poor adaptability of an antenna isolator in a miniaturized FTTR terminal device in the prior art is solved, and the effect of improving the adaptability of the antenna isolator is further realized.

Techniques are provided for improving antenna isolation and angle-of-arrival (AoA) performance of an antenna array. An example antenna array includes a plurality of patch antenna elements disposed on a planar substrate, and one or more resonator elements disposed on the planar substrate and between each of the plurality of patch antenna elements, wherein each of the one or more resonator elements includes a first repeating S-shaped conductor in a first orientation, and a second repeating S-shaped conductor in a second orientation that is rotated 180 degrees relative to the first orientation.

The application discloses an omnidirectional cross dual-polarized vibrator and an antenna, and the vibrator comprises a dipole vibrator, a choke disc, a fixed cylinder, a feeding sheet and a coaxial cable. The dipole vibrator is uniformly arranged on the side wall of the fixed cylinder and uniformly adheres to the side wall of the fixed cylinder, and the dipole vibrator comprises an upper vibrator lobe and a lower vibrator lobe. The center of a first positioning hole at the bottom end of the upper vibrator lobe is point A, the center of a second positioning hole at the top end of the lower vibrator lobe is point B, the straight line connecting point A and point B forms a polarization line, the included angle between the polarization line and a horizontal plane is 45 DEG, the dipole vibrator is provided with four groups, adjacent dipole vibrators are arranged at an angle of 90 DEG, the polarization lines of opposite dipole vibrators cross each other perpendicularly and are ±45 DEG polarized. Compared with the prior art, the vibrator not only reduces the mutual interference between two groups of vibrators, but also meets the miniaturization and compactness and improves the antenna isolation degree, and forms a double ±45 DEG omnidirectional radiation form.

The present invention relates to a phased array radar, and more specifically to a switching structure and method for connecting a random density weighted array to a regular array in a phased array radar, which is used to address the shortcomings of the existing interconnection method between the antenna array surface and the TR component in the phased array radar, such as poor antenna isolation and large insertion loss. The switching structure for connecting the random density weighted array to the regular array includes an upper plate, a radiation plate, a radio frequency coaxial cable assembly, grid bars and a lower plate, as well as a guide and positioning assembly, which are arranged in sequence from top to bottom. Based on the above-mentioned switching structure for connecting the random density weighted array to the regular array, the present invention also provides a method for connecting the random density weighted array to the regular array.

A directional coupler is operably connected to each antenna of a transmitting transceiver that has multiple antennas, and a tunable load is operably connected to each directional coupler. The directional couplers act to couple a co-located receiving transceiver to the antennas of the transmitting transceiver. Each tunable load is constructed based on a reflection coefficient (Γ) that is determined for that tunable load, in that the type of components and / or the values of some or all of the components that are used in the tunable load are determined based on the reflection coefficient (Γ) associated with that tunable load. The tunable loads cancel or reduce interferences experienced by the co-located receiving transceiver when the transmitting transceiver is transmitting using at least one of the multiple antennas.

The present application provides a housing assembly and a foldable terminal. The housing assembly is applied to the foldable terminal, the foldable terminal has an unfolded state and a folded state, the foldable terminal comprises a plurality of folding portions rotatably and sequentially connected by means of a rotary shaft, at least one folding portion is provided with the housing assembly, at least part of the housing assembly is a coupling medium, the coupling medium is used for electromagnetically coupling with another folding portion, which is opposingly arranged, and / or the rotary shaft in the folded state, and the coupling medium is electrically connected to a grounding structure of the folding portion. The housing assembly is provided with a first edge portion, a second edge portion, and a third edge portion which are sequentially connected, the first edge portion and the third edge portion are located on a same side of the second edge portion, the coupling medium is provided with a first portion located at the first edge portion, a second portion located at the second edge portion, and a third portion located at the third edge portion. The housing assembly and the foldable terminal provided in the embodiments of the present application can reduce the risk of antenna isolation deterioration.

The application relates to a small-sized dual-frequency dual-polarized antenna which comprises a dielectric plate and a radiation unit arranged on the dielectric plate, the radiation unit comprises two pairs of arm groups arranged orthogonally, each pair of the arm groups comprises two dual-frequency oscillator arms arranged at intervals and diagonally, two adjacent dual-frequency oscillator arms are arranged at intervals in a clockwise direction and are formed with a coupling gap, and a frequency-reducing gap for reducing a resonant frequency is arranged on the dual-frequency oscillator arm. The coupling gap improves impedance matching of a low-frequency band and a high-frequency band, reduces cross-polarization radiation, improves antenna isolation, increases a current path through the frequency-reducing gap, reduces the resonant frequency, reduces the size of the antenna, improves radiation efficiency, and improves horizontal plane coverage.

A fan-out electronic package and packaging method thereof include a wire redistribution unit, an isolation structure, at least one functional chip, a mask, a first pattern structure, a sealing structure, and a second pattern structure. The isolation structure is disposed within the wire redistribution unit, the functional chip is disposed within the isolation structure, the mask is disposed within the isolation structure and covers the functional chip, the first pattern structure is formed within the isolation structure, the sealing structure cooperates with the wire redistribution unit to encapsulate the isolation structure, the at least one functional chip, the mask, and the first pattern structure, and the second pattern structure is formed within the sealing structure and, together with the first pattern structure, forms an antenna. The isolation structure and mask provide shielding, while the application of the first pattern structure simplifies the manufacturing process. The wire redistribution unit serves as an electrical connection interface with external circuits, achieving circuit packaging and fan-out integrated layout.

The invention discloses an indoor distribution system, and relates to the technical field of wireless communication. The indoor distribution system comprises a first antenna, an isolator, at least one dual-mode signal amplifier and at least one second antenna, and each dual-mode signal amplifier in the at least one dual-mode signal amplifier is in one-to-one correspondence with each second antenna in the at least one second antenna. The first antenna is used for receiving a signal sent by a base station and sending the signal from the base station to the isolator. The signal from the base station comprises a first type of network signal or a second type of network signal. The isolator is used for receiving a signal from the first antenna and transmitting the signal from the first antenna to each dual-mode signal amplifier in the at least one dual-mode signal amplifier. And the dual-mode signal amplifier is used for receiving the signal from the isolator, amplifying the signal from the isolator to obtain a processed signal from the isolator, and sending the processed signal from the isolator to a second antenna corresponding to the dual-mode signal amplifier. And the second antenna is used for receiving the signal from the dual-mode signal amplifier corresponding to the second antenna and sending the signal from the dual-mode signal amplifier corresponding to the second antenna to the terminal. Wherein the signal from the base station comprises a first type of network signal or a second type of network signal.

The embodiment of the utility model relates to the technical field of antennas, and discloses an antenna array and communication equipment, the antenna array comprises a circuit board, a circuit layer, a grounding plate and a decoupling structure, the circuit layer comprises a first antenna and a second antenna, and the first antenna and the second antenna are arranged along the direction from one end of a first surface to the other end of the first surface. The decoupling structure is arranged between the first antenna and the second antenna, the first decoupling structure comprises a first decoupling groove, a second decoupling groove and a decoupling gap, the first decoupling groove and the second decoupling groove are in central symmetry, and an opening of the second decoupling groove is communicated with the decoupling gap. According to the embodiment of the invention, the method can achieve the high isolation of a plurality of antennas, and achieves the miniaturization.