A rooftop angled active antenna unit (AAU), a power combining device, and a base station

Abstract

This application relates to the field of communication technology, providing a rooftop angled active antenna unit (AAU), a power combining device, and a base station. The rooftop angled active antenna unit (AAU) based on power combining technology includes: an antenna array, a radio frequency (RF) channel group, and a power combining device. The power combining device is connected between the RF channel group and the antenna array for dynamically allocating RF power. The antenna array includes at least two column elements, each column element comprising a top element group and a non-top element group. The RF channel group includes at least two RF channels, with each column element corresponding to a first preset number of RF channels. The power combining device includes a second preset number of hybrid bridges. The rooftop angled active antenna unit based on power combining technology provided in this application can connect the RF channels corresponding to the top elements and the RF channels corresponding to the non-top elements through the power combining device, enabling free configuration of signal power between the two types of channels to improve the operating efficiency of the ATG base station.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a rooftop angled active antenna unit (AAU), a power combining device, and a base station. Background Technology

[0002] To improve communication transmission and reception capacity, most base station equipment in current 5G mobile communication technology systems is equipped with active antenna units (AAU).

[0003] When active antenna unit equipment is used in ATG (Air to Ground) base stations, after an aircraft enters the coverage area of ​​the ATG base station, the active antenna unit equipment generates a first type of beam for tracking and coverage in the airspace far from the base station. When the aircraft enters the airspace closer to the base station, the active antenna unit equipment generates a second type of beam for tracking and coverage. Each type of beam is generated by driving the corresponding radio frequency channel, which means that some radio frequency channels of the ATG base station will always be idle, affecting the working efficiency of the ATG base station. Utility Model Content

[0004] This application provides a rooftop angled active antenna unit (AAU), a power combining device, and a base station to address the shortcomings of existing technologies where different types of beams are driven by corresponding radio frequency channels, thereby improving the working efficiency of ATG base stations.

[0005] This application provides a rooftop angled active antenna unit (AAU) based on power combining technology, comprising: an antenna array, a radio frequency channel group, and a power combining device, wherein the power combining device is connected between the radio frequency channel group and the antenna array for dynamically allocating radio frequency power; The antenna array includes at least two column elements, and each column element includes a top element group and a non-top element group. The radio frequency channel group includes at least two radio frequency channels, and the column unit corresponds to a first preset number of radio frequency channels; The power combining device includes a second preset number of hybrid bridges.

[0006] According to the present application, a rooftop angled active antenna unit (AAU) based on power combining technology is provided. The power combining device includes at least two power combining components, which are connected between the column unit and a first preset number of radio frequency channels.

[0007] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the top oscillator group is at least connected to a first radio frequency channel, and the non-top oscillator group is at least connected to a second radio frequency channel; The power combining component is used at least for radio frequency power interconnection between the first radio frequency channel and the second radio frequency channel.

[0008] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the top oscillator group is connected to the first radio frequency channel, and the non-top oscillator group is connected to the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel respectively; The power combining component is used for radio frequency power interconnection between the first radio frequency channel, the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel.

[0009] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the first radio frequency channel, the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel are arranged in sequence; The power combining component includes a first hybrid bridge, a second hybrid bridge, a third hybrid bridge, and a fourth hybrid bridge; The first radio frequency channel is connected to the top oscillator group through the first hybrid bridge and the fourth hybrid bridge; The second radio frequency channel is connected to the non-top oscillator group through the first hybrid bridge and the third hybrid bridge; The third radio frequency channel is connected to the non-top oscillator group through the second hybrid bridge and the third hybrid bridge; The fourth radio frequency channel is connected to the non-top oscillator group via the second hybrid bridge and the fourth hybrid bridge.

[0010] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the top element group includes two top elements, and the non-top element group includes four non-top elements.

[0011] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the hybrid bridge is a 3dB 90° hybrid bridge.

[0012] According to the present application, a rooftop angled active antenna unit (AAU) based on power combining technology further includes a phase adjustment module, which is connected to the power combining device through the radio frequency channel group.

[0013] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the phase adjustment module is used to control the phase difference of the radio frequency signal input to the power combining device when top beam coverage is required, so as to realize power directional combining.

[0014] According to the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application, the phase adjustment module is also used to control the phase difference of the radio frequency signal input to the power combining device when non-top beam coverage is required, so as to achieve directional power equalization.

[0015] This application also provides a power combining device, including a second preset number of hybrid bridges, wherein the power combining device is used to embed an active antenna unit (AAU); The second preset number of hybrid bridges are used to connect the radio frequency channel group of the active antenna unit (AAU) with the antenna array to achieve dynamic allocation of radio frequency power.

[0016] According to a power combining device provided in this application, the second preset number of the hybrid bridge corresponds to the embedded active antenna unit (AAU).

[0017] This application also provides a base station, including a first preset number of rooftop angled active antenna units (AAUs) based on power combining technology as described in any of the preceding claims; or... It includes a first preset number of active antenna units (AAUs) embedded with the power combining device as described in any of the preceding claims.

[0018] The rooftop angled active antenna unit (AAU) and power combining device provided in this application can connect the radio frequency channel corresponding to the top element and the radio frequency channel corresponding to the non-top element through the power combining device, so as to realize the free configuration of signal power in the two types of channels. This ensures that the radio frequency channel corresponding to the top element and the radio frequency channel corresponding to the non-top element are not idle, or in other words, that the two types of radio frequency channels can always maintain full power transmission and can be flexibly configured in the top or non-top beam, thereby improving the working efficiency of the ATG base station. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of air-to-ground communication provided by existing technology.

[0021] Figure 2 This is one of the structural schematic diagrams of the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application.

[0022] Figure 3 This is the second schematic diagram of the structure of the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application.

[0023] Figure 4 This is the third schematic diagram of the structure of the rooftop angled active antenna unit (AAU) based on power combining technology provided in this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all 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.

[0025] Air-to-ground (ATG) communication systems provide services to aircraft (such as airplanes). ATG base stations are the core ground infrastructure of these systems, currently achieving high-speed interconnection between aircraft and the ground by deploying ATG base stations along flight paths. At present, a 64-channel AAU (Active Antenna Unit) combined with a folding antenna is used to achieve airspace coverage from 3km to 12km along the flight path, with a beam scanning range from the antenna normal to a wide-angle coverage offset of 90°. ATG base stations can transmit top and non-top beams; distant aircraft can be tracked and covered by the non-top beam, while nearby aircraft can be tracked and covered by the top beam.

[0026] To achieve wide-angle coverage with a beam scanning range of 0-90°, the angled AAU of the ATG base station is divided into top and non-top parts. Taking single polarization as an example, the top vibrator corresponding to the top radio frequency channel can reconstruct the top beam through beamforming, and the non-top vibrator corresponding to the non-top radio frequency channel can also reconstruct the non-top beam through beamforming. After an aircraft enters the coverage area of ​​the ATG base station, in the airspace far from the base station, the non-top beam provides tracking and coverage, and the radio frequency channel corresponding to the top vibrator is not working (the top beam is not working). However, when the aircraft enters the airspace closer to the base station, the top beam provides tracking and coverage, and the radio frequency channel corresponding to the non-top vibrator is not working. Through the relay coverage of the top and non-top beams, normal communication of the aircraft within the coverage area of ​​the ATG base station is ensured. However, the RF channels connected to the top element and those connected to the non-top element are independent in terms of signal output. Furthermore, because it provides relay coverage for aircraft, when only a single aircraft is present in the airspace, some RF channels of the ATG base station will always be idle. To address the limited efficiency of the ATG base station, this application provides a rooftop angled active antenna unit (AAU) and a power combining device. The technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings.

[0027] This application provides a rooftop angled active antenna unit (AAU) based on power combining technology, comprising: an antenna array, a radio frequency (RF) channel group, and a power combining device. The power combining device is connected between the RF channel group and the antenna array for dynamically distributing RF power. The antenna array includes at least two column elements, each column element comprising a top element group and a non-top element group. The RF channel group includes at least two RF channels, and each column element corresponds to a first preset number of RF channels. The power combining device includes a second preset number of hybrid bridges.

[0028] In this context, an antenna array refers to an array composed of two or more antenna elements arranged and excited according to certain rules. A column element is a complete and independently controllable basic functional module within an antenna element, obtained by dividing the AAU's roof surface into columns as basic units. The top element group is the collection of elements at the top of the column element's roof surface, while the non-top element group is the collection of elements not at the top of the column element's roof surface.

[0029] The radio frequency (RF) channel is a bidirectional channel responsible for receiving and transmitting. It converts and amplifies raw digital signals into high-frequency radio signals, which are then transmitted to the antenna element. Alternatively, it amplifies and processes weak radio signals received by the antenna element and converts them back into digital signals. The RF channel can be connected between the antenna element and the baseband unit. An RF channel group is a collection of RF channels.

[0030] The first preset number can be determined based on the actual number of oscillators driven by the radio frequency channel, and this application does not impose any further limitations on this.

[0031] The power combining device is used to flexibly distribute the RF power of each RF channel to the top or non-top beam. A bridge, also known as a bridge circuit or bridge-type circuit, is used for RF power distribution or combining of signals. A hybrid bridge can divide or combine input signals according to a specific ratio (e.g., 3dB, i.e., equal distribution) while maintaining the phase relationship of the signals (e.g., a 90° phase difference). The second preset number of hybrid bridges in the power combining device can be determined by analyzing its design architecture and functional requirements; this application does not further limit this.

[0032] The rooftop angled active antenna unit (AAU) based on power combining technology provided in this application embodiment can connect the radio frequency channel corresponding to the top element and the radio frequency channel corresponding to the non-top element through a power combining device, realizing the free configuration of signal power in the two types of channels. This ensures that the radio frequency channel corresponding to the top element and the radio frequency channel corresponding to the non-top element are not idle, or that the two types of radio frequency channels can always maintain full power transmission and be flexibly configured in the top or non-top beam, thereby improving the working efficiency of the ATG base station.

[0033] Based on the above embodiments, the power combining device includes at least two power combining components, which are connected between the column unit and a first preset number of radio frequency channels.

[0034] The power combining component is used to flexibly allocate the RF power of each RF channel in the column unit to the top oscillator group and non-top oscillator groups.

[0035] The second preset number of hybrid bridges in the power combining component can be determined by analyzing its design architecture and functional requirements, and this application does not further limit this. For example, such as... Figure 2 As shown, in the ATG angled AAU, a 4-channel power combining component can be constructed using 4 hybrid bridges to achieve dynamic distribution of RF signal power between the top and non-top beams. The angle between the top and non-top of the antenna array can be 135°.

[0036] It is understandable that the power combining component can connect the RF channels corresponding to the top oscillator group of the column unit with the RF channels corresponding to the non-top oscillator group, enabling free configuration of signal power in the two types of channels. This ensures that the RF channels corresponding to the top oscillator group and the non-top oscillator group of the column unit are not idle, reducing the number of connected RF channels and simplifying the connection method of the hybrid bridge.

[0037] Based on any of the above embodiments, the top oscillator group is at least connected to the first radio frequency channel, and the non-top oscillator group is at least connected to the second radio frequency channel; The power combining component is used at least for radio frequency power interconnection between the first radio frequency channel and the second radio frequency channel.

[0038] It should be noted that the top vibrator group of the column unit of the antenna element can be connected to the first preset number of first radio frequency channels, and the non-top vibrator group of the column unit of the antenna element can be connected to the first preset number of second radio frequency channels. The specific value of the first preset number can be determined based on the corresponding number of vibrators, the specific driving method, etc., and this embodiment does not impose further limitations on it.

[0039] The number of oscillators driven by the first radio frequency channel can be different from the number of oscillators driven by the second radio frequency channel.

[0040] To adapt to the wide-angle coverage requirements of ATG base stations with beam scanning range offset from 0° to 90° from the antenna normal, and to optimize the correspondence between the radio frequency channel and the antenna elements, in some embodiments, the top element group includes two top elements, and the non-top element group includes four non-top elements.

[0041] Understandably, the top element is primarily responsible for wide-angle coverage with a beam offset close to 90°. While the coverage area is relatively small, it requires high RF power to overcome path loss. Using the first RF channel to drive two top elements simplifies the feed network, reduces the number of channels, and ensures the RF power of the reconstructed top beam. The non-top elements are responsible for coverage in distant spatial domains, covering a larger area. Using the second, third, or fourth RF channel to drive four non-top elements respectively can achieve higher channel density, facilitating beamforming reconstruction of a wider non-top beam.

[0042] For example, such as Figure 2 As shown, the AAU rooftop is divided into columns as the basic unit. Each polarization type of rooftop can be divided into 8 columns, such as... Figure 3 As shown, the top oscillator group in the column unit contains 2 top oscillators, and the non-top oscillator group in the column unit contains 12 non-top oscillators, with a top oscillator:non-top oscillator ratio of 1:6. The top oscillators in the top oscillator group are connected to the same first radio frequency channel (each first radio frequency channel drives 2 oscillators, 1 drives 2), while the non-top oscillators are connected to three different second radio frequency channels (each second radio frequency channel drives 4 oscillators, 1 drives 4).

[0043] like Figure 3As shown, in some embodiments, the top oscillator group is connected to the first radio frequency channel, and the non-top oscillator group is connected to the second, third, and fourth radio frequency channels respectively; the power combining component is used for radio frequency power interconnection between the first, second, third, and fourth radio frequency channels.

[0044] like Figure 3 As shown, the radio frequency signal between the baseband processing unit and the 4-channel power combining component can be transmitted / received via the radio frequency channel.

[0045] In cases where the non-top oscillator group is connected to multiple radio frequency channels, oscillators can be selected sequentially from those closest to the top oscillator group to connect to the same radio frequency channel.

[0046] For example, starting with the oscillators closest to the top oscillator group, non-top oscillators numbered 1-12 can be obtained. Oscillators 1-4 are connected to the second RF channel, 5-8 are connected to the third RF channel, and 9-12 are connected to the fourth RF channel. Therefore, the oscillators of the column unit on the AAU rooftop are connected to four different RF channels, and the first RF channel connected to the top oscillator group is independent of the second, third, and fourth RF channels connected to the non-top oscillator groups.

[0047] Understandably, the power combining component enables the interconnection of RF power between the first RF channel corresponding to the top beam and the second RF channel corresponding to the non-top beam, so as to dynamically allocate the RF power of the four RF channels to the top beam or non-top beam according to the actual coverage requirements. When the ATG base station needs top beam coverage, the three RF channels corresponding to the non-top beam combine the power into the RF channel corresponding to the top beam through the device; while when the ATG base station needs non-top beam coverage, the RF channel corresponding to the top beam distributes the power evenly to the three RF channels corresponding to the non-top beam for power combining through the device.

[0048] like Figure 4 As shown, based on any of the above embodiments, the first radio frequency channel, the second radio frequency channel, the third radio frequency channel, and the fourth radio frequency channel are arranged sequentially; the power combining component includes a first hybrid bridge, a second hybrid bridge, a third hybrid bridge, and a fourth hybrid bridge; the first radio frequency channel is connected to the top oscillator group through the first hybrid bridge and the fourth hybrid bridge; the second radio frequency channel is connected to the non-top oscillator group through the first hybrid bridge and the third hybrid bridge; the third radio frequency channel is connected to the non-top oscillator group through the second hybrid bridge and the third hybrid bridge; and the fourth radio frequency channel is connected to the non-top oscillator group through the second hybrid bridge and the fourth hybrid bridge.

[0049] The 4-channel power combining component consists of four hybrid bridges with two inputs and two outputs. Through the above connection method, the 4-channel power combining component can connect any two of the first, second, third, and fourth radio frequency channels.

[0050] The power and phase transfer matrix A of the 4-channel power combining component is: To facilitate adjustment of the phase difference of the radio frequency signal input to the power combining device, in some embodiments, the active antenna unit (AAU) further includes a phase adjustment module, which is connected to the power combining device via the radio frequency channel group. The phase adjustment module refers to a module that adjusts the phase difference of the radio frequency signal input to the power combining device.

[0051] For example, the phase adjustment module may be located in the building base band unit (BBU) and is capable of performing pre-asymmetric phase adjustment on the radio frequency signals of each radio frequency channel that are about to enter the power combining device in order to adjust the phase difference of the radio frequency signals.

[0052] In some embodiments, the phase adjustment module is used to control the phase difference of the radio frequency signal input to the power combining device when top beam coverage is required, thereby achieving power directional combining.

[0053] The input signals for the four channels are matrix X. To combine the power of the three channels (second, third, and fourth RF channels not corresponding to the top beam) into the first RF channel corresponding to the top beam, the second, third, and fourth RF channels not corresponding to the top beam can be controlled to transmit the same RF signal as the first RF channel corresponding to the top beam. Furthermore, the phase adjustment module adjusts the phase of the RF signals from the second, third, and fourth RF channels to lag behind by 90°, 180°, and 270° respectively, resulting in matrix X: Therefore, after dynamic allocation by the 4-channel power combining component, the RF power of the signals from the second, third, and fourth RF channels will be merged into the first RF channel, resulting in the output signal matrix Y: In some embodiments, the phase adjustment module is further configured to control the phase difference of the radio frequency signal input to the power combining device when non-top beam coverage is required, thereby achieving directional power equalization.

[0054] Given a matrix X of input signals for the four channels, and the requirement to evenly distribute the channel power of the first RF channel corresponding to the top beam to the second, third, and fourth RF channels not corresponding to the top beam, the input signals for the four RF channels can be configured as follows: That is: the input signal power of the first RF channel corresponding to the top beam is equally distributed to X2, X3, and X4, and their phases can be controlled by the phase adjustment module to lag by 90°, 180°, and 90° respectively; the input signal power of the second RF channel is also equally distributed to X2, X3, and X4, and their phases can be controlled by the phase adjustment module to be 0°, 90°, and 180° respectively; the input signal power of the third RF channel is also equally distributed to X2, X3, and X4, and their phases can be controlled by the phase adjustment module to be 90°, 0°, and 90° respectively; the input signal power of the fourth RF channel is also equally distributed to X2, X3, and X4, and their phases can be controlled by the phase adjustment module to be 90°, 90°, and 0° respectively; at this time, the signal power after passing through the power combining component of the four channels can be evenly distributed to the second, third, and fourth RF channels, resulting in the output signal matrix Y as follows: At this time, the first RF channel (Y1) has no power output, the output signal of the second RF channel (Y2) is X2, and the RF power of the second RF channel is 4 / 3 times the RF power under the condition of no power combining; the output signal of the third RF channel (Y3) is X3, and the RF power of the third RF channel is 4 / 3 times the RF power under the condition of no power combining; the output signal of the fourth RF channel (Y4) is X4, and the RF power of the third RF channel is 4 / 3 times the RF power under the condition of no power combining.

[0055] Understandably, the 64-channel AAU uses 4 channels (a single-polarized column) as the basic unit, which can combine the RF power of all RF channels (16 channels in total for two polarizations) corresponding to the top beam into the corresponding non-top RF channels. After the RF channels corresponding to the non-top beam obtain power gain, they do not change phase additionally and can continue to participate in beamforming to track aircraft.

[0056] Based on any of the above embodiments, the hybrid bridge is a 3dB 90° hybrid bridge.

[0057] The 3dB 90° hybrid bridge can split the input RF signal into two signals with equal power (each with half the power of the input, i.e., -3dB), and there is a fixed 90° phase difference between the two output signals.

[0058] Understandably, using a 3dB 90° hybrid bridge as the core unit of the power combining device can take advantage of the inherent physical characteristics of the bridge to distribute the input signal equally and generate a fixed 90° phase difference between the two output signals. By constructing a multi-port power transfer matrix through specific combinations, it is possible to flexibly and efficiently combine the power of multiple radio frequency channels that were previously idle in a single-user scenario into one or more currently operating radio frequency channels according to the preset input signal phase, thus significantly improving the working efficiency of ATG base stations.

[0059] The power combining device provided in this application is described below. The power combining device described below can be referred to in correspondence with the rooftop angle active antenna unit (AAU) based on power combining technology described above.

[0060] This application provides a power combining device, comprising: a second preset number of hybrid bridges, wherein the power combining device is used to embed an active antenna unit (AAU); the second preset number of hybrid bridges are used to connect the radio frequency channel group of the active antenna unit (AAU) to the antenna array to realize dynamic allocation of radio frequency power.

[0061] It should be noted that the specific way in which the RF channel group of the active antenna unit (AAU) is connected to the antenna array through the second preset number of hybrid bridges, such as which RF channel group passes through which hybrid bridge to connect to the antenna array, can be determined by analyzing its design architecture and functional requirements. This application does not impose further limitations on this.

[0062] Understandably, embedding the power combining device as an independent module into the existing AAU architecture enables compatibility and reuse of existing equipment hardware and smooth functional expansion. This plug-in deployment method only requires connecting the power combining device between the existing RF transceiver unit and antenna element, without replacing the entire AAU system. It can endow existing equipment with new dynamic power combining capabilities, and optimize the existing AAU economically and quickly.

[0063] Based on any of the above embodiments, the second preset number of the hybrid bridge corresponds to the embedded active antenna unit (AAU).

[0064] The following describes a base station provided in this application. The base station described below can be referred to in correspondence with the rooftop angled active antenna unit (AAU) based on power combining technology described above.

[0065] This application provides a base station characterized in that it includes a first preset number of rooftop angle active antenna units (AAUs) based on power combining technology as described in any of the preceding claims; or, it includes a first preset number of active antenna units (AAUs) embedded with power combining devices as described in any of the preceding claims.

[0066] The first preset number can be determined according to the deployment scenario and actual needs of the base station, and this application does not limit it.

[0067] Understandably, this application utilizes multiple active antenna units (AAUs) in the base station that can dynamically allocate radio frequency power, which can significantly improve the performance of the air-to-ground communication (ATG) system, enable flexible power configuration of the corresponding radio frequency channels of the top and non-top elements, avoid the channel idleness problem in traditional relay coverage, and at the same time, power combining does not change the signal phase, supports precise beamforming, expands the coverage range by 20%-50%, and ensures seamless communication in the 3000~12000m airspace.

[0068] It is understandable that the second preset number of hybrid bridges is determined by the embedded active antenna unit (AAU) so that the second preset number of hybrid bridges corresponds to the number of radio frequency channels of the embedded active antenna unit (AAU), so that multiple radio frequency channels can be connected through the cooperation of multiple hybrid bridges with two inputs and two outputs, and the radio frequency power of the radio frequency channels can be dynamically allocated.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions 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 modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rooftop angled active antenna unit (AAU) based on power combining technology, characterized in that, include: An antenna array, a radio frequency channel group, and a power combining device, wherein the power combining device is connected between the radio frequency channel group and the antenna array for dynamically allocating radio frequency power; The antenna array includes at least two column elements, and each column element includes a top element group and a non-top element group. The radio frequency channel group includes at least two radio frequency channels, and the column unit corresponds to a first preset number of radio frequency channels; The power combining device includes a second preset number of hybrid bridges.

2. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 1, characterized in that, The power combining device includes at least two power combining components, which are connected between the column unit and a first preset number of radio frequency channels.

3. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 2, characterized in that, The top oscillator group is at least connected to the first radio frequency channel, and the non-top oscillator group is at least connected to the second radio frequency channel; The power combining component is used at least for radio frequency power interconnection between the first radio frequency channel and the second radio frequency channel.

4. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 2, characterized in that, The top oscillator group is connected to the first radio frequency channel, and the non-top oscillator group is connected to the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel respectively; The power combining component is used for radio frequency power interconnection between the first radio frequency channel, the second radio frequency channel, the third radio frequency channel and the fourth radio frequency channel.

5. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 4, characterized in that, The first radio frequency channel, the second radio frequency channel, the third radio frequency channel, and the fourth radio frequency channel are arranged in sequence; The power combining component includes a first hybrid bridge, a second hybrid bridge, a third hybrid bridge, and a fourth hybrid bridge; The first radio frequency channel is connected to the top oscillator group through the first hybrid bridge and the fourth hybrid bridge; The second radio frequency channel is connected to the non-top oscillator group through the first hybrid bridge and the third hybrid bridge; The third radio frequency channel is connected to the non-top oscillator group through the second hybrid bridge and the third hybrid bridge; The fourth radio frequency channel is connected to the non-top oscillator group via the second hybrid bridge and the fourth hybrid bridge.

6. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 4, characterized in that, The top oscillator group comprises two top oscillators, and the non-top oscillator group comprises four non-top oscillators.

7. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 1, characterized in that, The hybrid bridge is a 3dB 90° hybrid bridge.

8. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 1, characterized in that, It also includes a phase adjustment module, which is connected to the power combining device through the radio frequency channel group.

9. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 8, characterized in that, The phase adjustment module is used to control the phase difference of the radio frequency signal input to the power combining device when top beam coverage is required, so as to achieve power directional combining.

10. The rooftop angled active antenna unit (AAU) based on power combining technology according to claim 8, characterized in that, The phase adjustment module is also used to control the phase difference of the radio frequency signal input to the power combining device when non-top beam coverage is required, so as to achieve directional and equal power distribution.

11. A power combining device, characterized in that, Including a second preset number of hybrid bridges, the power combining device is used to embed an active antenna unit (AAU); The second preset number of hybrid bridges are used to connect the radio frequency channel group of the active antenna unit (AAU) with the antenna array to achieve dynamic allocation of radio frequency power.

12. The power combining apparatus according to claim 11, characterized in that, The second preset number of the hybrid bridge corresponds to the embedded active antenna unit (AAU).

13. A base station, characterized in that, Includes a first predetermined number of rooftop angled active antenna units (AAUs) based on power combining technology as described in any one of claims 1-10; or, It includes a first predetermined number of active antenna units (AAUs) embedded in the power combining device as described in any one of claims 11-12.

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