122 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.

An apparatus includes a substrate, a first antenna panel, a second antenna panel, and an antenna isolator. The first antenna panel is coupled on the substrate and includes an array of first antenna elements. The second antenna panel is coupled on the substrate and includes an array of second antenna elements. The antenna isolator is coupled on the substrate and including a plurality of walls extending outwardly from the substrate along a length of the substrate between the first antenna panel and the second antenna panel. The antenna isolator reduces reduce wave propagation between the array of first antenna elements and the array of second antenna elements.

The invention provides a radio frequency module and electronic equipment, and relates to the technical field of radio frequency. The problem that the radio frequency performance of the electronic equipment is reduced due to the influence of antenna isolation is solved. The radio frequency module comprises a first radio frequency channel and a second radio frequency channel, the first radio frequency channel comprises a radio frequency processing device, a filter circuit and a first antenna, the radio frequency processing device is coupled with the first antenna through the filter circuit, and the second radio frequency channel comprises a second antenna. The filter circuit is used for inhibiting the signal transmitted by the second antenna from being transmitted to the radio frequency processing device when the first antenna receives the signal transmitted by the second antenna, or inhibiting the signal transmitted by the second antenna from being transmitted to the radio frequency processing device when the signal transmitted by the second antenna is transmitted to the radio frequency processing device and the signal transmitted by the second antenna distorts to generate harmonic waves. The suppressed harmonics are transmitted from the radio frequency processing device to the first antenna.

The present disclosure provides an antenna system comprising: an antenna floor (22); the antenna housing (21) is arranged on the antenna floor in a covering manner; the transmitting antenna assembly (25) and the receiving antenna assembly (26) are installed on the antenna floor and located in a containing space (35) defined by the antenna cover and the antenna floor; the adjustable wave absorbing structure (33) is arranged in the accommodating space and is arranged to be close to the antenna housing; and the wave absorption adjusting circuit (36) is electrically connected with the adjustable wave absorption structure and is used for adjusting the wave absorption characteristic of the adjustable wave absorption structure to the electromagnetic waves. The invention also provides a method for adaptively adjusting the antenna isolation, a base station and an antenna isolation method.

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.

The present invention discloses a full-duplex satellite communication phased array antenna architecture, which relates to the field of microwave antenna technology. The phased array antenna architecture includes a structural member and a transmitting phased array antenna module, a receiving phased array antenna module, a first antenna cover and a second antenna cover installed on the structural member. The transmitting phased array antenna module is located in the cavity below the first antenna cover, and the receiving phased array antenna module is located in the cavity below the second antenna cover; the first antenna cover has an inner surface on one side close to the receiving phased array antenna module integrated with a frequency selective surface with a high-pass characteristic, and the second antenna cover has an inner surface on one side close to the transmitting phased array antenna module integrated with a frequency selective surface with a low-pass characteristic. The present invention solves the problem of isolating the transmitting and receiving antennas of the low-cost flat-panel architecture satellite communication phased array, while reducing the manufacturing difficulty and manufacturing cost of the antenna cover.

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 present invention discloses a miniaturized transceiver integrated antenna in the field of antennas and its application. The antenna includes three layers of printed circuit boards. A hollow structure is provided in the middle of the first layer of printed circuit boards. Transmitting radiation patches and receiving radiation patches are provided at opposite ends of the hollow structure, respectively. A number of metallized vias and blind holes are provided around the radiation patches. The lower surfaces of the second layer of printed circuit boards and the third layer of printed circuit boards are provided with metal grounds, and the metal grounds on the lower surface of the second layer of printed circuit boards serve as the grounding surface of the antenna, and a cavity-like body is formed between the two metal grounds. The antenna adopts a structure combining metallized vias and blind holes, which helps to miniaturize the antenna. The hollow structure of the printed circuit board, the special distribution of metallized vias and blind holes, and the principle of energy cancellation between metal ground layers help to improve the isolation of the antenna. The above design can achieve antenna miniaturization, high isolation, transceiver integration and other performances, so that the antenna can be applied to miniaturized transceiver integrated microsystems.

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 invention provides a coexistence signal interference processing method and device, and the method comprises the steps: respectively recognizing the first working frequency band information of a first communication module and the second working frequency band information of a second communication module in electronic equipment through a target program in the electronic equipment in response to a target instruction; whether a frequency band capable of generating signal interference exists between the first communication module and the second communication module is judged based on the first working frequency band information and the second working frequency band information, and when the frequency band capable of generating signal interference exists, the interference degree between the first communication module and the second communication module is determined; and adjusting the first working frequency band information or the second working frequency band information, so that the first communication module and the second communication module do not generate signal interference during working. According to the application, signal interference between the first communication module and the second communication module is avoided by adjusting the working frequency band, the antenna isolation between the two communication modules does not need to be considered, and the antenna position of the communication module is placed more freely.

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.

The present invention discloses a four-port high-isolation MIMO antenna, which belongs to the field of antennas. The antenna includes a rectangular dielectric substrate, four microstrip feeders arranged on the front of the dielectric substrate, and a ground plane arranged on the back of the dielectric substrate; a polygonal gap, two T-shaped gaps, and four convex-shaped gaps are arranged on the ground plane. The present invention feeds the antenna through four microstrip feeders, and electromagnetic waves are radiated through the convex-shaped gaps. The T-shaped gaps on the ground plane offset the microstrip line currents distributed up and down, thereby achieving high isolation between the upper and lower symmetrical unit antennas; at the same time, the polygonal gaps are introduced to change the distribution of the current on the defective floor, and the equivalent distance between each port is increased, so that the antenna isolation is greatly improved. The antenna has the advantages of wide bandwidth, low cost, miniaturization, high isolation, and wide radiation range.

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.