Antenna assembly, communication device, and base station

Abstract

Embodiments of the present application relate to the technical field of antennas, and in particular to an antenna assembly, a communication device, and a base station. The embodiments of the present application aim to solve the problem of an interference signal affecting the communication quality of an antenna assembly. A first parasitic radiator is spaced apart from a first radiator; the first parasitic radiator is used for receiving an interference signal; a first phase shifting unit is coupled to the first parasitic radiator; the first phase shifting unit is used for adjusting the phase of the interference signal to form a first signal, and the phase difference between the phase of the first signal and the phase of the interference signal is 180°; the first phase shifting unit is further used for transmitting the first signal to the first radiator. By means of the configuration, the first signal and the interference signal received by the first radiator interfere with each other to cancel each other, thereby reducing or even eliminating the influence of the interference signal on the first radiator, and improving the communication quality of the antenna assembly.

Description

Antenna assemblies, communication equipment and base stations

[0001] This application claims priority to Chinese patent application filed on October 9, 2024, with application number 202411405732.9 and entitled "Antenna Assembly, Communication Equipment and Base Station", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of antenna technology, specifically to an antenna assembly, communication equipment, and base station. Background Technology

[0003] A base station includes an antenna assembly that receives radio frequency signals in space for communication. However, interference signals also exist in space, which can affect the communication quality of the antenna assembly. Summary of the Invention

[0004] This application provides an antenna assembly, a communication device, and a base station, which can reduce the impact of interference signals and improve the communication quality of the antenna assembly.

[0005] In a first aspect, embodiments of this application provide an antenna assembly, including: a first radiator, a first parasitic radiator, and a first phase-shifting unit, wherein the first parasitic radiator is spaced apart from the first radiator and coupled to the first phase-shifting unit, the first parasitic radiator is used to receive an interference signal and transmit the interference signal to the first phase-shifting unit, the first phase-shifting unit is used to adjust the phase of the interference signal to form a first signal and make the phase of the interference signal 180° different from the phase of the first signal, and the first phase-shifting unit is also used to transmit the first signal to the first radiator.

[0006] With the above settings, the first signal can interfere with and cancel out the interference signal received by the first radiator, thereby reducing or even eliminating the influence of the interference signal on the first radiator and improving the communication quality of the antenna assembly.

[0007] In some embodiments that may include the above-described embodiments, the first phase-shifting unit is provided with two ports, one of which is coupled to the first parasitic radiator, and the other port is configured to be grounded. With the above configuration, the first signal is reflected or even totally reflected at the ground terminal of the first phase-shifting unit and emitted through the first parasitic radiator, so that the first radiator receives the first signal.

[0008] In some embodiments that may include the above-described embodiments, the first phase-shifting unit is provided with two ports, one of which is coupled to the first parasitic radiator, and the other port is configured as an open circuit. With this configuration, the first signal is reflected or even totally reflected at the open-circuit end of the first phase-shifting unit and emitted through the first parasitic radiator, allowing the first radiator to receive the first signal.

[0009] In some embodiments that may include the above-described embodiments, the first phase-shifting unit is provided with two ports, one port being coupled to the first parasitic radiator and the other port being coupled to the first radiator. With this configuration, the first phase-shifting unit can directly transmit the first signal to the first radiator.

[0010] In some embodiments that may include the above embodiments, the antenna assembly further includes a floor, and the first radiator and the first parasitic radiator are both disposed on one side of the floor; along a direction perpendicular to the floor, the first radiator is provided with one end close to the floor and one end away from the floor, the distance between the end of the first radiator away from the floor and the floor is the largest, and there is a first distance between the end of the first radiator away from the floor and the floor; along a direction perpendicular to the floor, the first parasitic radiator is provided with one end close to the floor and one end away from the floor, the distance between the end of the first parasitic radiator away from the floor and the floor is the largest, and there is a second distance between the end of the first parasitic radiator away from the floor and the floor; the first distance is greater than or equal to the second distance.

[0011] The above settings reduce the impact of the first parasitic radiator on the first radiator's radio frequency transmission and reception, thereby improving the communication quality of the antenna assembly.

[0012] In some embodiments that may include the above-described embodiments, the second distance is less than or equal to half of the first distance. With the above configuration, the first parasitic radiator has less impact on the first radiator's radio frequency signal transmission and reception, resulting in better communication quality for the antenna assembly.

[0013] In some embodiments that may include the above embodiments, the antenna assembly further includes an amplitude modulation unit, which is connected in series with the first phase shifting unit. The first phase shifting unit is coupled to the first parasitic radiator through the amplitude modulation unit. The amplitude modulation unit is used to adjust the amplitude of the interference signal to form a first signal so that the amplitude of the first signal is equal to the amplitude of the interference signal.

[0014] With the above settings, the amplitude modulation unit enhances the effect of mutual interference and cancellation between the first signal and the interference signal, thereby reducing or even eliminating the influence of the interference signal on the first radiator and improving the communication quality of the antenna assembly.

[0015] In some embodiments that may include the above-described embodiments, the antenna assembly further includes a second radiator for transmitting radio frequency signals. With this configuration, the antenna assembly can simultaneously receive radio frequency signals through the first radiator and transmit radio frequency signals through the second radiator, achieving full-duplex communication.

[0016] In some embodiments that may include the above embodiments, the antenna assembly further includes a second parasitic radiator and a second phase-shifting unit coupled to the second parasitic radiator. The second parasitic radiator is positioned closer to the first radiator. The second parasitic radiator is used to receive radio frequency signals emitted by the second radiator. The second phase-shifting unit is used to adjust the phase of the radio frequency signals received by the second parasitic radiator to form a second signal, and to make the phase of the second signal 180° different from the phase of the radio frequency signals emitted by the second radiator. The second phase-shifting unit is also used to transmit the second signal to the first radiator.

[0017] With the above configuration, the first radiator receives the second signal, and the second signal interferes with and cancels out the radio frequency signal transmitted by the second radiator to the first radiator, thereby reducing or even eliminating the influence of the radio frequency signal emitted by the second radiator on the first radiator, improving the isolation between the first and second radiators, and enhancing the communication quality of the antenna assembly.

[0018] In some embodiments that may include the above-described embodiments, there are multiple first radiators, and each first radiator is distributed in an array. This configuration improves the communication quality of the antenna assembly.

[0019] In some embodiments that may include the above-described embodiments, there are multiple second radiators, and each second radiator is distributed in an array. This configuration improves the communication quality of the antenna assembly.

[0020] In some embodiments that may include the above-described examples, an isolation structure is provided between the first radiator and the second radiator. This isolation structure prevents radio frequency signals emitted by the second radiator from being transmitted to the first radiator. This arrangement improves the isolation between the first and second radiators and enhances the communication quality of the antenna assembly.

[0021] Secondly, embodiments of this application provide a communication device, including: a radio frequency device, and an antenna assembly of any of the above embodiments, wherein a first radiator is coupled to the radio frequency device. This configuration improves the communication quality of the communication device.

[0022] Thirdly, embodiments of this application provide a base station, including: a baseband device, a radio frequency device, and an antenna assembly of any of the above embodiments, wherein the baseband device is coupled to a first radiator through the radio frequency device. This configuration improves the communication quality of the base station. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the antenna assembly provided in an embodiment of this application;

[0024] Figure 2 is an enlarged schematic diagram of part A in Figure 1;

[0025] Figure 3 is a schematic diagram of the antenna assembly provided in an embodiment of this application.

[0026] Figure 4 is a schematic diagram of the antenna assembly and the obstruction in one embodiment;

[0027] Figure 5 is a schematic diagram of the antenna assembly and controller in one embodiment;

[0028] Figure 6 is a flowchart of a method for adjusting the isolation between the first radiator and the second radiator in one embodiment;

[0029] Figure 7 is a schematic diagram of the antenna assembly and the obstruction in another embodiment;

[0030] Figure 8 is a schematic diagram of the antenna assembly and controller in another embodiment;

[0031] Figure 9 is a structural schematic diagram of the antenna assembly and the obstruction in another embodiment.

[0032] Explanation of reference numerals in the attached figures: 10: Antenna assembly; 100: First radiator; 110: First conductor; 120: Second conductor; 200: Second radiator; 300: First parasitic radiator; 400: First phase-shifting unit; 500: Second parasitic radiator; 600: Second phase-shifting unit; 700: Ground plane; 800: Dielectric substrate; 810: First support plate; 820: Second support plate; 830: Third support plate; 840: Plate body; 850: Copper wire; 900: Isolation structure; 20: Controller; 21: First controller; 22: Second controller; 23: Third controller; 30: Obstruction. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all possible embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The embodiments of this application do not limit the coupling method. In the embodiments of this application, "coupling" can be understood as coupling through transmission lines such as optical fiber, coaxial cable, and twisted pair; "coupling" can also be understood as coupling through space waves, ground waves, electromagnetic induction, etc.; "coupling" can also be understood as coupling through capacitors, inductors, etc.

[0035] In the above examples, a capacitor can include at least one of lumped capacitance and distributed capacitance. "Lumped capacitance" can be understood as a capacitive component, such as a capacitor element; "distributed capacitance" can be understood as the equivalent capacitance formed by two conductive elements separated by a certain gap. An inductor can include at least one of lumped inductance and distributed inductance. "Lumped inductance" can be understood as an inductive component, such as an inductor element; "distributed inductance" can be understood as the equivalent inductance formed by a conductive element of a certain length, such as the equivalent inductance formed by a conductor due to bending or rotation.

[0036] This application provides a base station, which may include at least one of the following: macro cell, microbase cell, pico cell, femto cell, duplex base station, and integrated sensing base station. A "duplex base station" can be understood as a base station capable of simultaneously processing uplink and downlink signals for bidirectional communication; an "integrated sensing base station" can be understood as a base station capable not only of communication and data transmission but also of environmental perception, target detection, and positioning functions.

[0037] The base station in this application embodiment includes a radio frequency (RF) device and an antenna assembly. The RF device may include at least one of a power amplifier, a low-noise amplifier, a filter, a mixer, and an antenna switch. The RF device is coupled to the antenna assembly and is used to transmit RF signals to or receive RF signals from the antenna assembly.

[0038] The base station in this embodiment further includes a baseband device, which may include at least one of a digital signal processing chip, a channel encoder, and a modem. The baseband device is coupled to the antenna assembly via a radio frequency device, and can be used to convert signal types, as well as to perform operations such as encoding, decoding, modulation, demodulation, error detection, and correction of signals.

[0039] In one alternative embodiment, the base station further includes a controller, which may include at least one of a Central Processing Unit (CPU), a System-on-Chips (SoC), and an Application-Specific Integrated Circuit (ASIC). The controller may be coupled to baseband and radio frequency (RF) devices to control the RF and baseband devices in processing signals. The controller may also be coupled to an antenna assembly via the baseband and RF devices to acquire signals received by the antenna assembly or to transmit signals to the antenna assembly.

[0040] This application also provides a communication device, which may include at least one device with communication function such as a router, mobile phone, or switch. This application does not limit the type of communication device. The communication device in this application includes a radio frequency (RF) device and an antenna assembly. The RF device may include at least one of a power amplifier, a low-noise amplifier, a filter, a mixer, and an antenna switch. The RF device is coupled to the antenna assembly and is used to transmit RF signals to or receive RF signals from the antenna assembly.

[0041] In one optional embodiment, the communication device further includes a controller, which may include at least one of a Central Processing Unit (CPU), a System-on-Chips (SoC), and an Application-Specific Integrated Circuit (ASIC). The controller may be coupled to a radio frequency (RF) device to control the RF device in processing RF signals. The controller may also be coupled to an antenna assembly via the RF device to acquire signals received by the antenna assembly or to transmit signals to the antenna assembly. Thus, the communication device can communicate with a base station or other communication devices.

[0042] In the above embodiments, multiple controllers may be provided.

[0043] Referring to Figures 1 and 2, the antenna assembly 10 provided in this embodiment includes a first radiator 100. The first radiator 100 can be used to receive radio frequency signals and / or can be used to transmit radio frequency signals. This embodiment will be described using the first radiator 100 for receiving radio frequency signals as an example. The first radiator 100 can be coupled to a radio frequency device to transmit the received radio frequency signals to the radio frequency device.

[0044] The first radiator 100 may include at least one of a monopole antenna, a dipole antenna, a loop antenna, and a parabolic antenna. For example, referring to FIG2, in an embodiment where the first radiator 100 includes a dipole antenna, the first radiator 100 may include a first conductor 110 and a second conductor 120, which are symmetrically arranged.

[0045] In an alternative embodiment, the first radiator 100 can be coupled to a radio frequency device via a gyroscope to receive and transmit radio frequency signals through a single first radiator 100.

[0046] Referring to Figure 1, the antenna assembly 10 of this embodiment further includes a second radiator 200, which may include at least one of a monopole antenna, a dipole antenna, a loop antenna, and a parabolic antenna. The second radiator 200 can be used to transmit radio frequency (RF) signals and / or to receive RF signals. This embodiment will be described using the second radiator 200 for transmitting RF signals as an example. The second radiator 200 can be coupled to an RF device to transmit RF signals transmitted by the RF device. Therefore, the antenna assembly 10 of this embodiment can transmit RF signals through the second radiator 200 while the first radiator 100 receives RF signals, thus achieving full-duplex communication.

[0047] In the above embodiments, multiple first radiators 100 can be configured, with each first radiator 100 spaced apart, and the distance between two adjacent first radiators 100 is not less than half the wavelength corresponding to the operating frequency of the first radiator 100. Here, "operating frequency" can be understood as the center frequency of the communication frequency band of the first radiator 100. Similarly, multiple second radiators 200 can be configured, with each second radiator 200 spaced apart, and the distance between two adjacent second radiators 200 is not less than half the wavelength corresponding to the operating frequency of the second radiator 200. These configurations improve the communication quality of the antenna assembly 10.

[0048] In some implementations, as shown in Figure 3, multiple first radiators 100 are spaced apart along a straight line.

[0049] In other implementations, please refer back to Figure 2, where multiple first radiators 100 are arrayed. For example, there can be sixteen first radiators 100, arranged in four columns, with each column containing four first radiators 100, and the first radiators 100 in each column are spaced apart along the first direction x.

[0050] The configuration method for multiple second radiators 200 can refer to the configuration method for multiple first radiators 100, and will not be repeated here.

[0051] In an optional embodiment, the antenna assembly 10 may further include a power divider, through which the plurality of first radiators 100 or the plurality of second radiators 200 may be coupled to the radio frequency device. The power divider may be used to combine the radio frequency signals received by each of the first radiators 100 or each of the second radiators 200 into a single radio frequency signal and transmit it to the radio frequency device; or, the power divider may also be used to transmit the radio frequency signals of the radio frequency device to each of the first radiators 100 or each of the second radiators 200 respectively.

[0052] For example, referring to Figure 2, four first radiators 100 in a row can be coupled to a radio frequency device through two power dividers. One power divider is used to combine the radio frequency signals received by each first radiator 100 into a single radio frequency signal and transmit it to the radio frequency device; the other power divider is used to transmit the radio frequency signals of the radio frequency device to each first radiator 100 respectively.

[0053] The radio frequency (RF) device can have two ports, each coupled to one of two power dividers. Each power divider has five ports, four of which are coupled to four first radiators 100, and the remaining port is coupled to a port on the RF device. Based on this structure, the RF device can transmit RF signals through one port and receive RF signals through the other port.

[0054] Similarly, in an embodiment where the first radiator 100 has sixteen units, the radio frequency device can have eight ports. The radio frequency device can emit radio frequency signals through four ports and receive radio frequency signals through the other four ports. In an embodiment where both the first radiator 100 and the second radiator 200 have sixteen units, the radio frequency device can have sixteen ports. The radio frequency device can emit radio frequency signals through eight ports and receive radio frequency signals through the other eight ports.

[0055] Referring to Figure 1, in an optional embodiment, the antenna assembly 10 further includes a ground plane 700 and a dielectric substrate 800. The material used to make the ground plane 700 may include at least one of copper, stainless steel, and tin foil. The material used to make the dielectric substrate 800 may include at least one of phenolic resin, glass fiber, and polyimide resin. The ground plane 700 is grounded, the dielectric substrate 800 is disposed on the ground plane 700, and the first radiator 100 is disposed on the dielectric substrate 800, which supports the first radiator 100.

[0056] In some implementations, referring to Figures 1 and 2, the dielectric substrate 800 may include a plate body 840 and a first support plate 810. The plate body 840 is disposed on the ground floor 700, and the plate body 840 and the ground floor 700 are stacked together. The first support plate 810 is disposed on the plate body 840, and the first support plate 810 may be perpendicular to the plate body 840. The first radiator 100 is disposed on the first support plate 810.

[0057] In some implementations, the second radiator 200 may also be disposed on the dielectric substrate 800. For example, the dielectric substrate 800 further includes a second support plate 820 disposed on the plate body 840, and the second radiator 200 is disposed on the second support plate 820. The second radiator 200 and the first radiator 100 may be disposed on the same side of the floor 700.

[0058] In some implementations, copper lines 850 are provided on the dielectric substrate 800, and the first radiator 100 and the second radiator 200 can be coupled to a radio frequency device or a power divider through the copper lines 850.

[0059] Referring to Figure 1, in an optional embodiment, the antenna assembly 10 of this application embodiment may further include an isolation structure 900. The material used to make the isolation structure 900 may include at least one of aluminum, copper, tin, polycarbonate, etc. The isolation structure 900 is disposed on the dielectric substrate 800 and is disposed between the first radiator 100 and the second radiator 200.

[0060] The isolation structure 900 is used to prevent the radio frequency signal emitted by the second radiator 200 from being transmitted to the first radiator 100, so as to reduce the interference of the radio frequency signal emitted by the second radiator 200 to the first radiator 100, thereby improving the isolation between the first radiator 100 and the second radiator 200 and improving the communication quality of the antenna assembly 10.

[0061] For example, referring to Figure 3, the isolation structure 900 can be used to prevent the radio frequency signal emitted by the second radiator 200 from being transmitted to the first radiator 100 along path a.

[0062] Referring to Figure 2, the antenna device in this embodiment further includes a first parasitic radiator 300, which is spaced apart from the first radiator 100. The first parasitic radiator 300 may include at least one of a monopole antenna, a dipole antenna, a loop antenna, and a parabolic antenna. The first parasitic radiator 300 is used to receive interference signals.

[0063] Here, "interference signal" can be understood as a radio frequency signal that affects the communication of the first radiator 100. For example, when the first radiator 100 needs to receive a specified radio frequency signal for communication, any radio frequency signals received by the first radiator 100 other than the specified radio frequency signal can be considered as interference signals.

[0064] In one example, referring to Figure 3, the interference signal received by the first radiator 100 may include a radio frequency signal emitted by the second radiator 200 propagating along path a.

[0065] In another example, referring to Figure 4, the interference signal received by the first radiator 100 may also include a radio frequency signal emitted by the second radiator 200, refracted or reflected by the obstruction 30, and propagating along path b. The obstruction 30 may include at least one of the following: a plate, a mirror, a metal object, a wall, a building, a mountain, etc.

[0066] In one example, the interference signal received by the first parasitic radiator 300 may include a radio frequency signal emitted by the second radiator 200, refracted or reflected by the obstruction 30, and propagated along path c.

[0067] In an implementation where the interference signal received by the first parasitic radiator 300 includes the signal emitted by the second radiator 200, the operating frequency band of the first parasitic radiator 300 may at least partially overlap with the operating frequency band of the first radiator 100. For example, the operating frequency bands of the first parasitic radiator 300, the first radiator 100, and the second radiator 200 may all be 6.8 GHz to 6.88 GHz.

[0068] Referring to Figure 4, the antenna device in this embodiment further includes a first phase-shifting unit 400. The first phase-shifting unit 400 may include at least one of a phase shifter, a transistor, a resistor-capacitor circuit, and an inductor-capacitor circuit. The first phase-shifting unit 400 is coupled to the first parasitic radiator 300. The first phase-shifting unit 400 is used to adjust the phase of the interference signal received by the first parasitic radiator 300 to form a second signal, and to make the phase of the second signal 180° different from the phase of the interference signal. The first phase-shifting unit 400 is also used to transmit the second signal to the first radiator 100, so that the second signal and the interference signal received by the first radiator 100 interfere with each other and cancel each other out, thereby reducing or even eliminating the influence of the interference signal on the first radiator 100 and improving the communication quality of the antenna assembly 10 (as shown in Figure 1).

[0069] In the antenna assembly 10 of this application embodiment, a first parasitic radiator 300 and a first radiator 100 are spaced apart. The first parasitic radiator 300 is used to receive interference signals. A first phase-shifting unit 400 is coupled to the first parasitic radiator 300. The first phase-shifting unit 400 is used to adjust the phase of the interference signal to form a first signal, and to make the phase of the interference signal 180° different from the phase of the first signal. The first phase-shifting unit 400 is also used to transmit the first signal to the first radiator 100 so that the first signal and the interference signal received by the first radiator 100 interfere with each other and cancel each other out, thereby reducing or even eliminating the influence of the interference signal on the first radiator 100 and improving the communication quality of the antenna assembly 10.

[0070] In an alternative embodiment, referring to Figure 4, the first phase-shifting unit 400 may have two ports. One of the ports is coupled to the first parasitic radiator 300, and the other port is either grounded or open-circuited. Based on this configuration, the first signal is reflected or even totally reflected at the grounded or open-circuited end of the first phase-shifting unit 400 and transmitted through the first parasitic radiator 300, allowing the first radiator 100 to receive the first signal. For example, the first parasitic radiator 300 can transmit the first signal to the first radiator 100 via path d.

[0071] In another alternative embodiment, the first phase-shifting unit 400 may have two ports, one of which is coupled to the first parasitic radiator 300, and the other of which is coupled to the first radiator 100. For example, the first phase-shifting unit 400 may be coupled to the first radiator 100 via a transmission line. Based on the above configuration, the first phase-shifting unit 400 can directly transmit the first signal to the first radiator 100.

[0072] In an optional embodiment, the antenna assembly 10 further includes an amplitude modulation (AM) unit, which may include at least one of an attenuator and an amplifier. The AM unit is connected in series with the first phase shifting unit 400. The first phase shifting unit 400 is coupled to the first parasitic radiator 300 through the AM unit, or the AM unit is coupled to the first parasitic radiator 300 through the first phase shifting unit 400. The AM unit is used to adjust the amplitude of the interference signal received by the first parasitic radiator 300 to form a first signal, such that the amplitude of the first signal is equal to the amplitude of the interference signal received by the first radiator 100. This enhances the effect of the first signal and the interference signal interfering with each other and canceling each other out, thereby reducing or even eliminating the influence of the interference signal on the first radiator 100 and improving the communication quality of the antenna assembly 10.

[0073] In the above embodiments, referring again to Figures 1 and 2, the first parasitic radiator 300 can also be disposed on the dielectric substrate 800, and the first parasitic radiator 300 and the first radiator 100 are disposed on the same side of the floor 700. Exemplarily, the dielectric substrate 800 further includes a third support plate 830, which is disposed on the plate body 840 and can be perpendicular to the plate body 840. The first parasitic radiator 300 is disposed on the third support plate 830.

[0074] In an optional embodiment, referring to FIG2, the second direction y is perpendicular to the floor 700. The first radiator 100 includes a first end and a second end, which are spaced apart along the second direction y. The first end faces away from the floor 700, and the second end is close to the floor 700. The distance between the first end and the floor 700 is the largest on the first radiator 100, and this distance is a first distance. The first parasitic radiator 300 includes a third end and a fourth end, which are spaced apart along the second direction y. The third end faces away from the floor 700, and the fourth end is close to the floor 700. The distance between the third end and the floor 700 is the largest on the first parasitic radiator 300, and this distance is a second distance. The first distance is greater than or equal to the second distance. Based on the above configuration, the first parasitic radiator 300 occupies less space, and its impact on the first radiator 100's transmission and reception of radio frequency signals is smaller, thus improving the communication quality of the antenna assembly 10 (as shown in FIG1).

[0075] In some implementations, the second distance is less than or equal to half of the first distance. This reduces the volume of the first parasitic radiator 300, minimizing its impact on the first radiator 100's transmission and reception of radio frequency signals, and resulting in better communication quality for the antenna assembly 10.

[0076] In one optional embodiment, the distance between the first parasitic radiator 300 and the first radiator 100 is less than half the wavelength corresponding to the operating frequency of the first radiator 100. Therefore, the time delay between the interference signal received by the first parasitic radiator 300 and the interference signal received by the first radiator 100 is small, resulting in a wider bandwidth for the first signal that can be used to interfere with and cancel out the interference signal received by the first radiator 100. For example, referring to FIG4, the time delay between the interference signal received by the first parasitic radiator 300 propagating along path c and the interference signal received by the first radiator 100 propagating along path b is small.

[0077] In an embodiment where multiple first radiators 100 are configured and the spacing between two adjacent first radiators 100 is not less than half the wavelength corresponding to the operating frequency of the first radiator 100, the first parasitic radiator 300 can be disposed between any two adjacent first radiators 100. The first parasitic radiator 300 occupies a small space and does not affect the arrangement of the first radiators 100, thus it can be applied to antenna assemblies 10 of any size.

[0078] In embodiments where there are multiple first radiators 100, the first parasitic radiator 300 or the first phase shifting unit 400 can transmit the first signal to multiple first radiators 100 to reduce or even eliminate the influence of interference signals on each first radiator 100 and improve the communication quality of the antenna assembly 10.

[0079] In the above embodiments, referring to Figure 3, multiple first parasitic radiators 300 and first phase-shifting units 400 can be configured, with each first phase-shifting unit 400 coupled to a different first parasitic radiator 300. In some implementations, referring to Figure 2, the first parasitic radiators 300 can be arranged at intervals around the first radiator 100. This arrangement improves the effect of mutual interference cancellation between the first signal and the interference signal, thereby improving the communication quality of the antenna assembly 10.

[0080] In one optional embodiment, multiple first parasitic radiators 300, first phase-shifting units 400, and first radiators 100 are provided. In one example, referring to FIG3, one first parasitic radiator 300 can be provided between every two adjacent first radiators 100. In another example, referring to FIG2, multiple first parasitic radiators 300 can be provided around each column of first radiators 100. With the above arrangement, each first radiator 100 can receive the first signal transmitted by the first parasitic radiator 300 or the first phase-shifting unit 400, and the effect of mutual interference and cancellation between the first signal and the interference signal is improved, thereby improving the communication quality of the antenna assembly 10.

[0081] In an optional embodiment, referring to FIG5, the controller 20 may be coupled to the first radiator 100 and the second radiator 200 to measure and acquire the isolation between the first radiator 100 and the second radiator 200. The controller 20 may also be coupled to the first phase shifting unit 400 to control the phase shift amount of the first phase shifting unit 400.

[0082] Based on the above settings, the controller 20 can be used to adjust and improve the isolation between the first radiator 100 and the second radiator 200 to improve the communication quality of the antenna assembly 10.

[0083] Referring to Figure 6, in an optional embodiment, the adjustment step may include:

[0084] S100, Obtain the isolation between the first radiator 100 and the second radiator 200.

[0085] S200: Determine whether the isolation between the first radiator 100 and the second radiator 200 is less than a preset value.

[0086] Here, the preset value can be greater than the minimum isolation level that does not affect the communication of the first radiator 100 and the second radiator 200. In some implementations, the preset value can range from 70dB to 80dB; for example, the preset value can be configured as 72dB, 75dB, or 78dB.

[0087] With the above settings, changes in the isolation between the first radiator 100 and the second radiator 200 can be monitored. For example, referring to Figure 7, when an obstruction 30 is added to the working environment of the antenna assembly 10, the radio frequency signal emitted by the second radiator 200 may be transmitted to the first radiator 100 after being refracted or reflected by the obstruction 30, resulting in a decrease in the isolation between the first radiator 100 and the second radiator 200.

[0088] For example, in the embodiment where the isolation between the first radiator 100 and the second radiator 200 shown in FIG. 1 is 80 dB, the isolation between the first radiator 100 and the second radiator 200 shown in FIG. 7 is reduced to 70 dB. Therefore, in the embodiment where the preset value is configured to 78 dB, the isolation between the first radiator 100 and the second radiator 200 shown in FIG. 7 is less than the preset value.

[0089] Since the isolation between the first radiator 100 and the second radiator 200 may be less than or greater than the preset value, the following will explain the different cases.

[0090] Case 1: If the isolation between the first radiator 100 and the second radiator 200 is less than a preset value, S200 determines that this is the case, and the controller 20 executes S300.

[0091] S300, Adjust the phase shift amount of the first phase shifting unit 400.

[0092] In some implementations, the controller 20 may increase the phase shift of the first phase shifting unit 400 or decrease the phase shift of the first phase shifting unit 400 to adjust the isolation between the first radiator 100 and the second radiator 200.

[0093] After step S300, the control unit returns to step S100 and executes steps S100 and S200 again to obtain the isolation degree between the first radiator 100 and the second radiator 200 for the second time, and determines whether the isolation degree between the first radiator 100 and the second radiator 200 after the first adjustment is less than the preset value.

[0094] In one optional embodiment, the difference between the isolation degree between the first radiator 100 and the second radiator 200 obtained in the first acquisition and a preset isolation degree is defined as a first difference value, and the difference between the isolation degree between the first radiator 100 and the second radiator 200 obtained in the second acquisition and the preset isolation degree is defined as a second difference value. The control unit can compare the first difference value and the second difference value, and adjust the phase shift amount of the first phase shifting unit 400 according to the comparison result, so that the isolation degree between the first radiator 100 and the second radiator 200 converges towards the preset isolation degree.

[0095] Scenario 2: If the isolation between the first radiator 100 and the second radiator 200 is greater than or equal to a preset value, S200 determines no, and the controller 20 returns to step S100 to continue monitoring the change in the isolation between the first radiator 100 and the second radiator 200.

[0096] For example, in an embodiment where the preset value is configured to 78dB, when the controller 20 obtains that the isolation between the first radiator 100 and the second radiator 200 shown in FIG. 7 is 79dB, S200 determines that it is no. This indicates that after the obstruction 30 was added to the working environment of the antenna assembly 10, the controller 20 readjusted the isolation between the first radiator 100 and the second radiator 200 to above the preset value.

[0097] In some implementations, the above adjustment steps may be repeated three or more times to improve the isolation between the first radiator 100 and the second radiator 200.

[0098] With the above settings, the controller 20 can be used to monitor the isolation between the first radiator 100 and the second radiator 200. When the isolation is less than a preset value, the controller 20 can change the phase shift amount of the first phase shifting unit 400 to improve the isolation between the first radiator 100 and the second radiator 200 and avoid reducing the communication quality of the antenna assembly 10.

[0099] Referring to Figure 8, in embodiments where multiple controllers 20 are configured, the controller 20 may include a first controller 21, a second controller 22, and a third controller 23. The first controller 21 is coupled to the first radiator 100 and the second radiator 200, and to the second controller 22. The second controller 22 is coupled to the third controller 23, and the third controller 23 is coupled to the first phase-shifting unit 400. The first controller 21 measures and acquires the isolation degree between the first radiator 100 and the second radiator 200, and transmits the measured isolation degree value to the second controller 22. The second controller 22 determines the phase shift amount of the first phase-shifting unit 400 based on the acquired isolation degree value, and transmits the determined phase shift amount value to the third controller 23. The third controller 23 adjusts the phase shift amount of the first phase-shifting unit 400 based on the acquired phase shift amount value to adjust the isolation degree between the first radiator 100 and the second radiator 200.

[0100] In an optional embodiment, referring to FIG3, the antenna assembly 10 further includes a second parasitic radiator 500 and a second phase-shifting unit 600, wherein the second parasitic radiator 500 is coupled to the second phase-shifting unit 600. The second parasitic radiator 500 may include at least one of a monopole antenna, a dipole antenna, a loop antenna, and a parabolic antenna; the second phase-shifting unit 600 may include at least one of a phase shifter, a transistor, a resistor-capacitor circuit, and an inductor-capacitor circuit. The second parasitic radiator 500 is spaced apart from the second radiator 200, and the second parasitic radiator 500 is positioned closer to the second radiator 200 than the first radiator 100.

[0101] The second parasitic radiator 500 is used to receive the radio frequency signal emitted by the second radiator 200. The second phase-shifting unit 600 is used to adjust the phase of the radio frequency signal received by the second parasitic radiator 500 to form a second signal, and to make the phase of the second signal 180° different from the phase of the radio frequency signal emitted by the second radiator 200. The second phase-shifting unit 600 is also used to transmit the second signal to the first radiator 100, so that the second signal and the radio frequency signal transmitted by the second radiator 200 to the first radiator 100 interfere with each other and cancel each other out, so as to reduce or even eliminate the influence of the radio frequency signal emitted by the second radiator 200 on the first radiator 100, improve the isolation between the first radiator 100 and the second radiator 200, and improve the communication quality of the antenna assembly 10.

[0102] Referring to Figure 9, in one example, the second parasitic radiator 500 can be used to receive the radio frequency signal emitted by the second radiator 200 that propagates along path e.

[0103] In an alternative embodiment, referring to FIG9, the second phase-shifting unit 600 includes two ports, one of which is coupled to the second parasitic radiator 500, and the other of which is configured to be grounded or open-circuited. Thus, the second signal is reflected or even totally reflected from the grounded or open-circuited end of the second phase-shifting unit 600 and emitted through the second parasitic radiator 500, allowing the first radiator 100 to receive the second signal. For example, the second signal can be transmitted to the first radiator 100 along path f through refraction or reflection by the obstruction 30.

[0104] In another alternative embodiment, the second phase-shifting unit 600 includes two ports, one of which is coupled to the second parasitic radiator 500, and the other of which is coupled to the first radiator 100. For example, it can be coupled to the first radiator 100 via a transmission line. Based on the above configuration, the second signal is transmitted to the first radiator 100 through the second phase-shifting unit 600.

[0105] In the above embodiments, multiple second parasitic radiators 500 and multiple second phase-shifting units 600 can be configured, with each second phase-shifting unit 600 coupled to a different second parasitic radiator 500, and the multiple second parasitic radiators 500 can be arranged in an array. This configuration improves the effect of mutual interference cancellation between the second signal and the radio frequency signal transmitted from the second radiator 200 to the first radiator 100, and improves the isolation between the first radiator 100 and the second radiator 200. The arrangement of the multiple second parasitic radiators 500 can refer to the arrangement of the multiple first parasitic radiators 300, and will not be described further here.

[0106] In some implementations, multiple second parasitic radiators 500, second phase-shifting units 600, and second radiators 200 are provided to improve the effect of mutual interference cancellation between the second signal and the radio frequency signal transmitted from the second radiator 200 to the first radiator 100, thereby improving the isolation between the first radiator 100 and the second radiator 200. The arrangement of multiple second radiators 200 and multiple second parasitic radiators 500 can refer to the arrangement of multiple first radiators 100 and multiple first parasitic radiators 300, and will not be described again here.

[0107] It should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or an integral connection; they can also refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or as many of the technical features as possible; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An antenna assembly, characterized in that, include: First radiator; The first parasitic radiator is spaced apart from the first radiator, and the first parasitic radiator is used to receive interference signals. A first phase-shifting unit is coupled to the first parasitic radiator. The first phase-shifting unit is used to adjust the phase of the interference signal to form a first signal. The first phase-shifting unit is also used to transmit the first signal to the first radiator. The phase of the interference signal differs from the phase of the first signal by 180°.

2. The antenna assembly according to claim 1, characterized in that, One port of the first phase-shifting unit is coupled to the first parasitic radiator, and the other port of the first phase-shifting unit is configured to be grounded; or, one port of the first phase-shifting unit is coupled to the first parasitic radiator, and the other port of the first phase-shifting unit is configured to be open-circuited.

3. The antenna assembly according to claim 1, characterized in that, One port of the first phase-shifting unit is coupled to the first parasitic radiator, and the other port of the first phase-shifting unit is coupled to the first radiator.

4. The antenna assembly according to any one of claims 1 to 3, characterized in that, The antenna assembly further includes a floor, and the first radiator and the first parasitic radiator are both disposed on one side of the floor; along a direction perpendicular to the floor, the end of the first radiator facing away from the floor has a first distance from the floor, and the end of the first parasitic radiator facing away from the floor has a second distance from the floor, wherein the first distance is greater than or equal to the second distance.

5. The antenna assembly according to claim 4, characterized in that, The second distance is less than or equal to half of the first distance.

6. The antenna assembly according to any one of claims 1 to 5, characterized in that, The antenna assembly further includes an amplitude modulation unit, and the first phase shifting unit is coupled to the first parasitic radiator through the amplitude modulation unit. The amplitude modulation unit is used to adjust the amplitude of the interference signal so that the amplitude of the first signal is equal to the amplitude of the interference signal.

7. The antenna assembly according to any one of claims 1 to 6, characterized in that, The antenna assembly also includes a second radiator for transmitting radio frequency signals.

8. The antenna assembly according to claim 7, characterized in that, The antenna assembly further includes a second parasitic radiator and a second phase-shifting unit; The second parasitic radiator is positioned closer to the first radiator than the second radiator, and the second parasitic radiator is used to receive the radio frequency signal emitted by the second radiator. The second phase-shifting unit is coupled to the second parasitic radiator. The second phase-shifting unit is used to adjust the phase of the radio frequency signal received by the second parasitic radiator to form a second signal. The phase of the second signal is 180° different from the phase of the radio frequency signal emitted by the second radiator. The second phase-shifting unit is also used to transmit the second signal to the first radiator.

9. The antenna assembly according to claim 7 or 8, characterized in that, The first radiator is a plurality of such radiators, and the first radiators are distributed in an array; and / or There are multiple second radiators, and each second radiator is distributed in an array.

10. The antenna assembly according to any one of claims 7 to 9, characterized in that, An isolation structure is provided between the first radiator and the second radiator, the isolation structure being used to prevent the radio frequency signal emitted by the second radiator from being transmitted to the first radiator.

11. A communication device, characterized in that, Includes: a radio frequency device, and an antenna assembly as described in any one of claims 1 to 10, wherein the first radiator is coupled to the radio frequency device.

12. A base station, characterized in that, include: The baseband device, the radio frequency device, and the antenna assembly according to any one of claims 1 to 10, wherein the baseband device is coupled to the first radiator through the radio frequency device.

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