Active network module antenna and unmanned equipment

Abstract

The utility model relates to the technical field of antennas, and provides an active network module antenna and unmanned equipment. The active network module antenna comprises an antenna module and a network module, wherein the antenna module comprises a main antenna board and at least one auxiliary antenna board; the network module is connected with the main antenna board and the auxiliary antenna boards. The main antenna board comprises a power divider, a main radio frequency circuit and a main passive antenna, the power divider is connected with the main radio frequency circuit, and the main radio frequency circuit is connected with the main passive antenna; the auxiliary antenna board comprises an auxiliary radio frequency circuit and an auxiliary passive antenna, the power divider is connected with the auxiliary radio frequency circuit, and the auxiliary radio frequency circuit is connected with the auxiliary passive antenna. According to the invention, the number and the frequency band of the antenna are expanded by arranging the main antenna plate and the auxiliary antenna plate, and meanwhile, each antenna plate is provided with the radio frequency circuit to carry out amplification gain on the wireless signal, so that the energy of the emitted signal is larger, and long-distance communication is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to an active network module antenna and unmanned equipment. Background Art

[0002] Antennas are one of the main components for receiving and sending wireless signals, and are divided into active antennas and passive antennas. At present, traditional passive antennas are commonly used on wireless devices. The gain of passive antennas is limited by the size and material of the antenna, and is generally around 3dBi, mainly used on wireless devices with low gain requirements. When wireless devices require higher gain applications, active antennas will be selected. Although the existing active antennas have improved the gain to a certain extent, for devices that need to achieve long-distance communication, the coverage range achieved by active antennas cannot meet the requirements. Utility Model Content

[0003] The utility model provides an antenna module, a WiFi antenna and a drone, which achieve communication requirements at different distances by arranging two main and secondary antenna boards, and arranging radio frequency circuits on the two main and secondary antenna boards to gain wireless signals, thereby solving the problem of short communication distance of existing antennas.

[0004] The first aspect of the utility model provides an active network module antenna, comprising an antenna module and a network module, wherein the antenna module comprises a main antenna board and at least one auxiliary antenna board; the network module is connected to the main antenna board and each of the auxiliary antenna boards;

[0005] The main antenna board includes a power divider, a main radio frequency circuit and a main passive antenna, the power divider is connected to the main radio frequency circuit, and the main radio frequency circuit is connected to the main passive antenna;

[0006] The secondary antenna board includes a secondary radio frequency circuit and a secondary passive antenna. The power divider is connected to the secondary radio frequency circuit, and the secondary radio frequency circuit is connected to the secondary passive antenna.

[0007] Optionally, the main antenna board further includes a first communication interface and a second communication interface respectively connected to the power divider, wherein the first communication interface is connected to the network module, and the second communication interface is connected to the secondary RF circuit on the secondary antenna board;

[0008] The secondary antenna board also includes a third communication interface connected to the secondary RF circuit and the second communication interface, and the power divider divides the wireless signal transmitted from the first communication interface into two paths and inputs them into the main RF circuit and the secondary RF circuit respectively.

[0009] Optionally, the main radio frequency circuit includes a first multiplexer and at least two main signal processing circuits, wherein each main signal processing circuit corresponds to an operating frequency band;

[0010] The first multiplexer is connected to the power divider, and the first multiplexer is connected to the at least two main signal processing circuits. Each main signal processing circuit is connected to a main passive antenna, and each main passive antenna corresponds to an operating frequency band.

[0011] Optionally, the main signal processing circuit includes a first radio frequency switch, a first radio frequency front-end module, a first radio frequency receiving circuit and a first radio frequency transmitting circuit;

[0012] The first RF switch is connected to the first multiplexer, the input ends of the first RF receiving circuit and the first RF transmitting circuit are connected to the first RF switch, the output ends of the first RF receiving circuit and the first RF transmitting circuit are connected to the first RF front-end module, and the first RF front-end module is connected to the main passive antenna; the connection with the first RF receiving circuit or the first RF transmitting circuit is selected by enabling control of the first RF switch.

[0013] Optionally, the first RF receiving circuit includes a first signal amplifier and a first filtering circuit, the output end of the first signal amplifier is connected to the first RF switch, the input end of the first signal amplifier is connected to the output end of the first filtering circuit, and the input end of the first filtering circuit is connected to the first RF front-end module.

[0014] Optionally, the auxiliary radio frequency circuit includes a second multiplexer and at least two auxiliary signal processing circuits, wherein each auxiliary signal processing circuit corresponds to an operating frequency band;

[0015] The second multiplexer is connected to the third communication interface, the second multiplexer is connected to the at least two auxiliary signal processing circuits, each auxiliary signal processing circuit is connected to a secondary passive antenna, and each secondary passive antenna corresponds to a working frequency band.

[0016] Optionally, the auxiliary signal processing circuit includes a second radio frequency switch, a second radio frequency front-end module, a second radio frequency receiving circuit and a second radio frequency transmitting circuit;

[0017] The second RF switch is connected to the second multiplexer, the input ends of the second RF receiving circuit and the second RF transmitting circuit are connected to the second RF switch, the output ends of the second RF receiving circuit and the second RF transmitting circuit are connected to the second RF front-end module, and the second RF front-end module is connected to the secondary passive antenna; the connection with the second RF receiving circuit or the second RF transmitting circuit is selected by enabling control of the second RF switch.

[0018] Optionally, the second RF receiving circuit includes a second signal amplifier and a second filtering circuit, the output end of the second signal amplifier is connected to the second RF switch, the input end of the second signal amplifier is connected to the output end of the second filtering circuit, and the input end of the second filtering circuit is connected to the second RF front-end module.

[0019] Optionally, the main antenna board and all the auxiliary antenna boards are arranged on a PCB circuit board, wherein the main antenna board and each of the auxiliary antenna boards are circuit modules located in different areas of the PCB circuit board.

[0020] Optionally, the main radio frequency circuit and the auxiliary radio frequency circuit and the main passive antenna and the auxiliary passive antenna are arranged on different circuit layers of the PCB circuit board.

[0021] Optionally, the network module is connected to the main antenna board and each of the auxiliary antenna boards via a coaxial cable.

[0022] A second aspect of the present invention provides an unmanned device, comprising at least one active network module antenna and a control system as described in the first aspect, wherein the control system is connected to the active network module antenna.

[0023] Optionally, the network module is a WiFi module.

[0024] In the technical solution provided by the utility model, the active network module includes an antenna module and a network module, the antenna module includes a main antenna board provided with a power divider, a main radio frequency circuit and a main passive antenna, and at least one auxiliary antenna board provided with a radio frequency circuit and an auxiliary passive antenna, wherein the network module is connected to the main antenna board and each auxiliary antenna board; the power divider is connected to the main radio frequency circuit, and the main radio frequency circuit is connected to the main passive antenna; the power divider is connected to the auxiliary radio frequency circuit, and the auxiliary radio frequency circuit is connected to the auxiliary passive antenna. The present application realizes the expansion of the number and frequency band of antennas by setting two types of main and auxiliary antenna boards, and at the same time, an radio frequency circuit is provided on each antenna board to amplify the gain of the wireless signal, so that the emitted signal energy is larger to achieve long-distance communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the first structure of the active network module antenna in an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the first structure of the antenna module in the embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of a second structure of the antenna module in an embodiment of the utility model;

[0028] Figure 4 This is a third structural schematic diagram of the antenna module in the embodiment of the utility model;

[0029] Figure 5 This is a fourth structural schematic diagram of the antenna module in the embodiment of the utility model;

[0030] Figure 6 This is a fifth structural schematic diagram of the antenna module in the embodiment of the utility model;

[0031] Figure 7 This is a sixth structural schematic diagram of the antenna module in the embodiment of the utility model;

[0032] Figure 8 Schematic diagram of the seventh structure of the antenna module in the embodiment of the utility model;

[0033] Fig. 9 This is a schematic diagram of the structure of the radio frequency circuit and the passive antenna in the embodiment of the utility model;

[0034] Fig.10 It is a structural schematic diagram of the main passive antenna and the auxiliary passive antenna in the embodiment of the utility model;

[0035] Fig.11 This is a schematic diagram of the second structure of the active network module antenna in the embodiment of the utility model; DETAILED DESCRIPTION

[0036] The embodiment of the utility model provides an active network module antenna and unmanned equipment, which expands the number of antennas by setting up two main and sub-boards for the entire antenna. At the same time, radio frequency circuits are provided on the main and sub-boards to amplify wireless signals to meet the requirements of signal gain at different distances, thereby solving the problem of short communication distance of existing antennas.

[0037] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] like Figure 1 and Figure 2 A structural schematic diagram of an active network module antenna provided in the present application, the active network module antenna includes an antenna module 10 and a network module 20. In actual applications, multiple antenna modules 10 can be provided, and one or more can be selected for use according to actual needs.

[0039] The antenna module includes a main antenna board 100 and at least one secondary antenna board 200, wherein the network module 20 is communicatively connected with the main antenna board 100 and each secondary antenna board 200, such as being connected via a coaxial cable, and each secondary antenna board 200 is connected in parallel with the main antenna board 100, that is, the main antenna board 100 is provided with interfaces equal to the number of the secondary antenna boards 200, and each secondary antenna board 200 is connected to an interface on the main antenna board 100 to receive signals from the main antenna board 100 or transmit signals to the main antenna board 100, and then the main antenna board 100 outputs the signals transmitted by each secondary antenna board 200 and the signals received by itself to the signal processing module of the device for signal processing.

[0040] In this embodiment, the difference between the main antenna board 100 and each auxiliary antenna board 200 is that the main antenna board 100 is provided with a power divider, and the structure of each auxiliary antenna board 200 and the rest of the structure of the main antenna board 100 both include a radio frequency circuit and a passive antenna. That is, the main antenna board 100 is mainly composed of two parts, one part is a traditional passive antenna, and the other part is an antenna radio frequency circuit. Similarly, the auxiliary antenna board 200 is also composed of two parts, except that the antenna radio frequency circuit of the main antenna board 100 has an additional power divider, while the antenna radio frequency circuit on the auxiliary antenna board 200 has no reactive divider.

[0041] Specifically, the main antenna board 100 includes a power divider 110 , a main RF circuit 120 and a main passive antenna 130 , the power divider 110 is connected to the main RF circuit 120 , and the main RF circuit 120 is connected to the main passive antenna 130 .

[0042] The secondary antenna board 200 includes a secondary RF circuit 210 and a secondary passive antenna 220 . The power divider 110 is connected to the secondary RF circuit 210 , and the secondary RF circuit 210 is connected to the secondary passive antenna 220 .

[0043] In practical applications, the main antenna board 100 and each of the secondary antenna boards 200 are an integrated circuit board, which can be implemented by the following process: first, the corresponding circuits are drawn according to the circuit structures of the main antenna board 100 and the secondary antenna board 200, and a PCB board that can accommodate the circuits of the main antenna board 100 and all the secondary antenna boards 200 is selected, and a plurality of circuit areas are divided on the PCB board, and then the circuits of the main antenna board 100 and all the secondary antenna boards 200 are added to the corresponding circuit areas, one circuit area corresponds to one circuit, so as to obtain an integrated circuit board including the main antenna board 100 and all the secondary antenna boards 200. Of course, the main antenna board 100 and each of the secondary antenna boards 200 can also be implemented by using a single board, that is, the main antenna board 100 and each of the secondary antenna boards 200 are respectively set as an independent circuit board, wherein each of the secondary antenna boards 200 is connected to the power divider 110 on the main antenna board 200 through a jumper or a coaxial cable.

[0044] based on Figure 2 The structure of the antenna module is that when sending wireless signals, after the main antenna board 100 receives the wireless signal generated by the device, the power divider 110 divides the energy of one wireless signal into two or more equal or unequal energies, thereby obtaining two or more wireless signals, and outputs the divided wireless signals to the main RF circuit 120 and the secondary RF circuits 210 on each secondary antenna board 200. When receiving wireless signals, the energy of the multiple wireless signals received from the main RF circuit 120 and each secondary antenna board 200 is combined into one, and output to the signal processing module on the device, such as the communication module.

[0045] In another embodiment, in order to facilitate the connection between each auxiliary antenna board 200 and the main antenna board 100, the main antenna board 100 also includes a first communication interface 140 and a second communication interface 150 respectively connected to the power divider 110; the auxiliary antenna board 200 also includes a third communication interface 230 connected to the auxiliary RF circuit 210 and the second communication interface 150, and the power divider 110 divides the wireless signal transmitted from the first communication interface 140 into two paths and inputs them into the main RF circuit 120 and the auxiliary RF circuit 210 respectively.

[0046] Among them, the first communication interface 140 is connected to the network module 20, and the second communication interface 150 is connected to the secondary RF circuit 210 on the secondary antenna board 200; the power divider 110 is provided with an input end and at least two output ends, the first communication interface 140 is connected to the output end of the power divider 110, one output end of the power divider 110 is connected to the main RF circuit 120, and the remaining output ends of the power divider 110 are all connected to a second communication interface 150, and each second communication interface 150 is also connected to the secondary RF circuit 210 of a secondary antenna board 200, such as Figure 3 As shown. Correspondingly, each secondary antenna board 200 is also provided with a third communication interface 230 connected to the input end of the secondary RF circuit 210 and the second communication interface 150, and the power divider 110 divides the wireless signal transmitted from the first communication interface 140 into two paths and inputs them to the main RF circuit 120 and the secondary RF circuit 210 respectively. That is, the communication connection between the secondary RF circuit 210 of the secondary antenna board 200 and the main antenna board 100 is realized through the third communication interface 230.

[0047] In actual applications, when the main antenna board 100 and each auxiliary antenna board 200 are independent circuit boards, each second communication interface 150 and each third communication interface 230 are implemented through a physical interface, and then the physical interface of each second communication interface 150 and each third communication interface 230 is connected through a jumper. If the physical interface is a pin header, the paired second communication interface 150 and the third communication interface 230 are electrically connected through a pin header cable.

[0048] When the main antenna board 100 and each auxiliary antenna board 200 are an integrated circuit board, each second communication interface 150 and each third communication interface 230 are implemented by laying circuit lines, such as Figure 4 shown.

[0049] In another embodiment, the main antenna board 100 and each of the secondary antenna boards 200 may be configured to receive and transmit wireless signals in multiple frequency bands, such as Figure 5 As shown, the main radio frequency circuit 120 includes a first multiplexer 121 and at least two main signal processing circuits 122, wherein each main signal processing circuit 122 corresponds to a working frequency band; that is, a wireless signal output from the power divider 110 passes through the first multiplexer 121 and outputs wireless signals of different frequency bands, and each segment of the wireless signal is input into the main signal processing circuit 122 of the corresponding frequency band, and the corresponding main signal processing circuit 122 amplifies the wireless signal of the frequency band, and finally sends it out from the corresponding main passive antenna 130.

[0050] The first multiplexer 121 is connected to the power divider 110 , and the first multiplexer 121 is connected to at least two main signal processing circuits 122 , each main signal processing circuit 122 is connected to a main passive antenna 130 , and each main passive antenna 130 corresponds to an operating frequency band.

[0051] Similarly, the structure of each auxiliary antenna board 200 is similar to that of the main antenna board 100, and the auxiliary radio frequency circuit 210 includes a second multiplexer 211 and at least two auxiliary signal processing circuits 212, wherein each auxiliary signal processing circuit 212 corresponds to an operating frequency band;

[0052] The second multiplexer 211 is connected to the third communication interface 230 , and the second multiplexer 211 is connected to at least two auxiliary signal processing circuits 212 , each auxiliary signal processing circuit 212 is connected to a secondary passive antenna 220 , and each secondary passive antenna 220 corresponds to a working frequency band.

[0053] like Figure 6 As shown, the structure diagram of the main RF circuit 120 taking two frequency bands (2.4G and 5.8G) as an example, wherein the first multiplexer 121 and the second multiplexer are both duplexers, the 2.4G frequency band on the main antenna board 100 corresponds to the first main signal processing circuit, the 5.8G frequency band corresponds to the second main signal processing circuit, the 2.4G frequency band on the auxiliary antenna board 200 corresponds to the first auxiliary signal processing circuit, and the 5.8G frequency band corresponds to the second auxiliary signal processing circuit. The wireless signal generated from the device side is split by the power divider 110, and the two output 2.4G+5.8G wireless signals are output. The energy in the two 2.4G+5.8G wireless signals may be equal or unequal. Specifically, the power divider is split according to the communication distance requirement, and the two 2.4G+5.8G wireless signals are respectively input to the main antenna board 100 and the ... After the duplexer on the secondary antenna board 200, the duplexer divides it into two signals, namely a 2.4G signal and a 5.8G signal, that is, the signals of the two frequency bands in the 2.4G+5.8G wireless signal are separated. On the main antenna board 100, the separated 2.4G signal is output to the first main signal processing circuit for amplification, and then output to the 2.4G main passive antenna for radiation; the 5.8G signal is output to the second main signal processing circuit for amplification, and then output to the 5.8G main passive antenna for radiation; on the secondary antenna board 200, the separated 2.4G signal is output to the first secondary signal processing circuit for amplification, and then output to the 2.4G secondary passive antenna for radiation; the 5.8G signal is output to the second secondary signal processing circuit for amplification, and then output to the 5.8G secondary passive antenna for radiation.

[0054] Through the implementation of the antenna module provided above, the antenna module is set as multiple antenna boards to achieve the expansion of the number of antennas. At the same time, multiple signal processing circuits are provided on each antenna board, and each signal processing circuit corresponds to an operating frequency band, so as to achieve multi-band compatibility of the antenna. By performing gain processing such as signal amplification by the signal processing circuit, the antenna is made compatible with communications at multiple distances, thereby solving the problem of the existing antenna having a single communication distance and poor adaptability.

[0055] like Figure 7 As shown, another implementation of the antenna module provided in an embodiment of the present application, the signal processing circuit on the antenna module can not only realize the transmission of wireless signals, but also realize the reception of wireless signals sent by other devices.

[0056] Specifically, the structure of the main signal processing circuit 122 on the main antenna board 100 is as follows: the main signal processing circuit 122 includes a first RF switch 1221, a first RF front-end module 1222, a first RF receiving circuit 1223 and a first RF transmitting circuit 1224; the first RF switch 1221 is connected to the first multiplexer 121, the input ends of the first RF receiving circuit 1223 and the first RF transmitting circuit 1224 are connected to the first RF switch 1221, the output ends of the first RF receiving circuit 1223 and the first RF transmitting circuit 1224 are connected to the first RF front-end module 1222, and the first RF front-end module 1222 is connected to the main passive antenna 130; the connection with the first RF receiving circuit 1223 or the first RF transmitting circuit 1224 is selected by enabling control of the first RF switch 1222.

[0057] Similarly, the structure of the auxiliary signal processing circuit 212 on the auxiliary antenna board 200 is specifically as follows: the auxiliary signal processing circuit 212 includes a second RF switch 2121, a second RF front-end module 2122, a second RF receiving circuit 2123 and a second RF transmitting circuit 2124; the second RF switch 2121 is connected to the second multiplexer 211, the input ends of the second RF receiving circuit 2123 and the second RF transmitting circuit 2124 are connected to the second RF switch 2121, the output ends of the second RF receiving circuit 2123 and the second RF transmitting circuit 2124 are connected to the second RF front-end module 2122, and the second RF front-end module 2122 is connected to the auxiliary passive antenna 220; the connection with the second RF receiving circuit 2123 or the second RF transmitting circuit 2124 is selected by enabling control of the second RF switch 2121.

[0058] The following uses a 2.4G+5.8G WiFi signal as an example to illustrate the working principle of the main antenna board 100 and the auxiliary antenna board 200. When sending a signal, after the WiFi module of the device generates a 2.4G+5.8G WiFi signal, it is divided into multiple WiFi sub-signals based on the communication requirements of the main antenna board 100 and each auxiliary antenna board 200 by the power divider 110, wherein each WiFi sub-signal contains a 2.4G+5.8G WiFi signal, and the difference is only the energy of the signal. Based on the difference in energy, the corresponding WiFi sub-signal is output to the corresponding antenna board. If the antenna module is only provided with one main antenna board and one auxiliary antenna board, the power divider 110 outputs the two WiFi sub-signals to the corresponding antenna board according to the communication requirements of the main antenna board and the auxiliary antenna board. Taking the main antenna board as an example, if the main antenna board corresponds to the first WiFi sub-signal, the power divider 110 outputs the first WiFi sub-signal to the first multiplexer 121 (taking the duplexer as an example), and the first WiFi sub-signal is divided into a 2.4G WiFi sub-signal and a 5.8G WiFi sub-signal by the first multiplexer 121, wherein the 2.4G WiFi sub-signal is output to the 2.4G main signal processing circuit 122, and the 5.8G WiFi sub-signal is output to the 5.8G main signal processing circuit 122, and the 2.4G WiFi sub-signal is output to the first RF switch 1221 on the 2.4G main signal processing circuit 122, and under the control of the enable signal, it is output to the first RF front-end module 1222 through the first RF switch 1221 and the first RF transmitting circuit 1224, and the first RF front-end module 1222 amplifies the 2.4G WiFi sub-signal to the communication requirement and then sends it out from the 2.4G main passive antenna 130. On the contrary, when receiving a signal, after the main passive antenna 130 receives the 2.4G WiFi signal, the first RF front-end module 1222 amplifies and outputs it to the first RF receiving circuit 1223 for filtering and amplification, and then outputs it to the first RF switch 1221. The first RF switch 1221 outputs it to the power divider 110 under the control of the enable signal, and finally sends it to the WiFi module of the device.

[0059] The working principle of sending and receiving 5.8G WiFi signals is the same as that of 2.4G. The sending and receiving principles of WiFi signals by each secondary antenna board 200 are the same as those of the main antenna board 100, and will not be repeated here.

[0060] In this embodiment, during the signal receiving process, if the power splitter 110 simultaneously receives WiFi signals transmitted back by the main antenna board 100 and the auxiliary antenna board 200, the power splitter 110 also needs to combine the multiple WiFi signals and output the combined WiFi signals to the WiFi module of the device for processing. Similarly, the antenna module can be used for other radio frequency signals in addition to WiFi signals.

[0061] like Figure 8 As shown, the first RF receiving circuit 1223 includes a first signal amplifier (LNA1) and a first filtering circuit (SAW1), the output end of the first signal amplifier (LNA1) is connected to the first RF switch 1221, the input end of the first signal amplifier (LNA1) is connected to the output end of the first filtering circuit (SAW1), and the input end of the first filtering circuit (SAW1) is connected to the first RF front-end module 1222.

[0062] The second RF receiving circuit 2123 includes a second signal amplifier (LNA2) and a second filtering circuit (SAW2), the output end of the second signal amplifier (LNA2) is connected to the second RF switch 2121, the input end of the second signal amplifier (LNA2) is connected to the output end of the second filtering circuit (SAW2), and the input end of the second filtering circuit (SAW2) is connected to the second RF front-end module 2122.

[0063] In another embodiment, the main antenna board 100 and all the auxiliary antenna boards 200 are arranged on a PCB circuit board, wherein the main antenna board 100 and each of the auxiliary antenna boards 200 are circuit modules located in different regions of the PCB circuit board. The main RF circuit 120 on the main antenna board 100 and the auxiliary RF circuit 210 on the auxiliary antenna board 200 and the main passive antenna 130 on the main antenna board 100 and the auxiliary passive antenna 220 on the auxiliary antenna board 200 are arranged on different circuit layers of the PCB circuit board.

[0064] like Fig. 9 As shown, the main antenna board 100 and the auxiliary antenna board 200 are both designed with a double-layer PCB board, wherein the main RF circuit 120 and the auxiliary RF circuit 210 are arranged on the front side of the double-layer PCB board, the main passive antenna 130 and the auxiliary passive antenna 220 are arranged on the back side of the double-layer PCB board, and the circuit on the front side is connected to the antenna on the back side through a copper column, which is arranged in a through hole on the double-layer PCB board that runs through the front and back sides.

[0065] In this embodiment, the antennas of different working frequency bands on the main passive antenna 130 and the auxiliary passive antenna 220 are also different, and can be specifically divided into microstrip antennas and patch ceramic antennas, and different working frequency bands can be obtained by setting different antenna quantity combinations.

[0066] like Fig.10As shown in the figure, there are passive antenna structures for 2.4G and 5.8G working frequency bands respectively, among which the 2.4G adopts the patch ceramic antenna design, and a 2.4G passive antenna can be designed with one array. The number of patch ceramic antennas is designed according to the number of 2.4G antennas set in the main antenna board and the auxiliary antenna board. A feeding point is set in the middle of the patch ceramic antenna of each 2.4G antenna, and is connected to the output end of the corresponding RF circuit through the feeding point.

[0067] For the 5.8G microstrip antenna design, this application uses a microstrip antenna composed of 4 antenna arrays connected in series. The number of such antenna arrays is designed according to the number of 5.8G antennas set on the main antenna board and the auxiliary antenna board. Feeding points are set at both ends of each 5.8G antenna, and are connected to the output end of the corresponding RF circuit through one of the feeding points.

[0068] In summary, by providing a main antenna board with a power divider, a main RF circuit and a main passive antenna and at least one auxiliary antenna board with an RF circuit and a secondary passive antenna; the power divider is connected to the input end of the main RF circuit, and the output end of the main RF circuit is connected to the main passive antenna; the power divider is connected to the input end of the secondary RF circuit, and the output end of the secondary RF circuit is connected to the secondary passive antenna; the problem of short communication distance of existing antennas can be solved.

[0069] The structure of the active network module antenna provided by the present application is described in detail below in combination with specific design principles. Fig.11 As shown, the network module 20 is a structure of an active network module antenna of a WiFi module.

[0070] In this embodiment, the antenna module 10 includes a main antenna board 100 and a secondary antenna board 200. The main antenna board 100 is provided with two groups of interfaces 10 and 20, a 2.4G / 5.8G power splitter, a duplexer, a 2.4G radio frequency circuit and a 5.8G radio frequency circuit. The secondary antenna board 200 is provided with a group of interfaces 30, a duplexer, a 2.4G radio frequency circuit and a 5.8G radio frequency circuit. The interface 10 is connected to the WiFi module 1020 and the 2.4G / 5.8G power splitter, and the interface 20 is connected to the 2.4G / 5.8G power splitter and the duplexer on the secondary antenna board 200.

[0071] The WiFi module is a communication circuit that can generate or demodulate 2.4G / 5.8G WiFi signals. The WiFi module specifically includes a processor, a signal generator and a power supply circuit. Corresponding interfaces are set based on the processor, the signal generator and the power supply circuit. These interfaces are all connected to the interfaces on the main antenna board 100, such as being connected to the first communication interface on the main antenna board 100. The WiFi module 1020 outputs the generated 2.4G / 5.8G WiFi signal to the power divider on the main antenna board 100 through the interface, and divides it into multiple sub-path signals and outputs them to the RF circuits on the main antenna board 100 and the auxiliary antenna board 200.

[0072] In actual applications, when sending signals, the WiFi module generates a 2.4G / 5.8G WiFi signal, which enters the main antenna board 100 after passing through the coaxial cable. The 2.4G / 5.8G power splitter is used on the main antenna board 100 to divide the signal into two paths for amplification. Before amplification, the WiFi signal is first divided into 2.4G and 5.8G sub-signals through a duplexer. After passing through the RF switch, they are amplified by the 2.4G FEM or 5.8G FEM, and finally transmitted to the 2.4G or 5.8G passive antenna through the RF line to radiate the energy.

[0073] When receiving the signal, the WiFi signal received by the 2.4G or 5.8G passive antenna is amplified by the corresponding FEM and LNA, and sent to the RF switch after SAW filtering, and then combined by the duplexer. The combined WiFi signal is then combined by the power divider. At this time, the combined WiFi signal includes the WiFi signals received by the main antenna board 100 and the auxiliary antenna board 200, and finally returns to the WiFi module through the coaxial cable for signal demodulation.

[0074] The utility model also provides an unmanned device, which includes at least one active network module antenna provided above. The unmanned device can be, for example, a drone, an unmanned vehicle, etc. The unmanned device has the same technical features as the active network module antenna provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0075] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An active network module antenna, characterized in that: It includes an antenna module and a network module, wherein the antenna module includes a main antenna board and at least one auxiliary antenna board; the network module is connected to the main antenna board and each of the auxiliary antenna boards; The main antenna board includes a power divider, a main radio frequency circuit and a main passive antenna, the power divider is connected to the main radio frequency circuit, and the main radio frequency circuit is connected to the main passive antenna; The secondary antenna board includes a secondary radio frequency circuit and a secondary passive antenna. The power divider is connected to the secondary radio frequency circuit, and the secondary radio frequency circuit is connected to the secondary passive antenna.

2. The active network module antenna according to claim 1, characterized in that: The main antenna board also includes a first communication interface and a second communication interface respectively connected to the power divider, wherein the first communication interface is connected to the network module, and the second communication interface is connected to the secondary RF circuit on the secondary antenna board; The secondary antenna board also includes a third communication interface connected to the secondary RF circuit and the second communication interface, and the power divider divides the wireless signal transmitted from the first communication interface into two paths and inputs them into the main RF circuit and the secondary RF circuit respectively.

3. The active network module antenna according to claim 2, characterized in that: The main radio frequency circuit includes a first multiplexer and at least two main signal processing circuits, wherein each main signal processing circuit corresponds to an operating frequency band; The first multiplexer is connected to the power divider, and the first multiplexer is connected to the at least two main signal processing circuits. Each main signal processing circuit is connected to a main passive antenna, and each main passive antenna corresponds to an operating frequency band.

4. The active network module antenna according to claim 3, characterized in that: The main signal processing circuit includes a first radio frequency switch, a first radio frequency front-end module, a first radio frequency receiving circuit and a first radio frequency transmitting circuit; The first RF switch is connected to the first multiplexer, the input ends of the first RF receiving circuit and the first RF transmitting circuit are connected to the first RF switch, the output ends of the first RF receiving circuit and the first RF transmitting circuit are connected to the first RF front-end module, and the first RF front-end module is connected to the main passive antenna; the connection with the first RF receiving circuit or the first RF transmitting circuit is selected by enabling control of the first RF switch.

5. The active network module antenna according to claim 4, characterized in that: The first RF receiving circuit includes a first signal amplifier and a first filtering circuit, the output end of the first signal amplifier is connected to the first RF switch, the input end of the first signal amplifier is connected to the output end of the first filtering circuit, and the input end of the first filtering circuit is connected to the first RF front-end module.

6. The active network module antenna according to claim 3, characterized in that: The auxiliary radio frequency circuit includes a second multiplexer and at least two auxiliary signal processing circuits, wherein each auxiliary signal processing circuit corresponds to an operating frequency band; The second multiplexer is connected to the third communication interface, the second multiplexer is connected to the at least two auxiliary signal processing circuits, each auxiliary signal processing circuit is connected to a secondary passive antenna, and each secondary passive antenna corresponds to a working frequency band.

7. The active network module antenna according to claim 6, characterized in that: The auxiliary signal processing circuit includes a second radio frequency switch, a second radio frequency front-end module, a second radio frequency receiving circuit and a second radio frequency transmitting circuit; The second RF switch is connected to the second multiplexer, the input ends of the second RF receiving circuit and the second RF transmitting circuit are connected to the second RF switch, the output ends of the second RF receiving circuit and the second RF transmitting circuit are connected to the second RF front-end module, and the second RF front-end module is connected to the secondary passive antenna; the connection with the second RF receiving circuit or the second RF transmitting circuit is selected by enabling control of the second RF switch.

8. The active network module antenna according to claim 7, characterized in that: The second RF receiving circuit includes a second signal amplifier and a second filtering circuit, the output end of the second signal amplifier is connected to the second RF switch, the input end of the second signal amplifier is connected to the output end of the second filtering circuit, and the input end of the second filtering circuit is connected to the second RF front-end module.

9. The active network module antenna according to any one of claims 1 to 8, characterized in that: The main antenna board and all the auxiliary antenna boards are arranged on a PCB circuit board, wherein the main antenna board and each of the auxiliary antenna boards are circuit modules located in different areas of the PCB circuit board.

10. The active network module antenna according to claim 9, characterized in that: The main radio frequency circuit and the auxiliary radio frequency circuit and the main passive antenna and the auxiliary passive antenna are arranged on different circuit layers of the PCB circuit board.

11. The active network module antenna according to any one of claims 1 to 8, characterized in that: The network module is connected to the main antenna board and each of the auxiliary antenna boards through a coaxial cable.

12. An unmanned device, characterized in that: The unmanned equipment comprises at least one active network module antenna and a control system as claimed in any one of claims 1 to 11, wherein the control system is connected to the active network module antenna.

13. The unmanned equipment according to claim 12, characterized in that: The network module is a WiFi module.

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